Instruction Manual 3434i SF6 Leak Detector BE6028-14
Index ________________________________________________________________________ Index Index ................................................................................................................................... 2 3434i SF6 Leak Detector ........................................................................................................ 4 Safety Considerations. ...................................................................................................... 5 Applying Power ............
Index ________________________________________________________________________ Chapter 11 Maintenance of the 3434i .................................................................................. 126 11.1 Changing the Fine Air-filters .................................................................................. 127 11.2 Cleaning the Filter in the Ventilation Unit ................................................................. 132 11.3 Cleaning the Instrument ........................................
Safety Considerations ________________________________________________________________________ 3434i SF6 Leak Detector July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 4 of 191
Safety Considerations ______________________________________________________________________ Safety Considerations. Throughout this manual Monitor is used for: The 3434i SF6 Leak Detector The Monitor complies with: • EN/IEC 61010-1, 2nd Edition: Safety requirements for electrical equipment for measurement, control and laboratory use. • Can/CSA-C22.2 No. 61010-1-04 - Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use. • UL Std. No.
Safety Considerations ______________________________________________________________________ Environmental Conditions for transport and storage: Temperature: -25 to +55ºC Relative Humidity: 0 to 80% RH Atmospheric Pressure: 800 to 1060 hPa Warnings! • Avoid water condensation in the instrument. • Switch off all equipment before connecting or disconnecting their digital interface. Failure to do so could damage the equipment.
Safety Considerations ______________________________________________________________________ Applying Power Before using the 3434i check that the available mains voltage match the specified voltage and frequency for the instrument. SAFETY SYMBOLS The apparatus will be marked with this symbol when it is important that the user refers to the associated warning statement given in the User Guide.
Chapter 1 ______________________________________________________________________ Chapter 1 Using this Manual July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 8 of 191
Chapter 1 ______________________________________________________________________ 1.1 Introduction This manual can be used in several ways. The first time users can work their way through the examples in order to get to know this monitoring system. The more experienced users can jump directly to the relevant chapters in order to gain assistance, and experts can use this manual as a reference book by using the index.
Chapter 1 ______________________________________________________________________ SELECT SET-UP BRANCH MEASUREMENT FORMAT CONFIGURATION The display above is used continuously through-out this manual. It assists you displaying the text on screen and by indicating which of the push-buttons can and should be pressed.
Chapter 1 ______________________________________________________________________ SYSTEM Text that appears on the display screen is shown in an open shaded box, using UPPER case letters. FORMAT System General Clock When referring to any part of the Set-up “tree”, the text is shown in open shaded boxes with the same typeface as that used in the “tree”.
Chapter 2 ______________________________________________________________________ Chapter 2 Preliminary Tasks July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 12 of 191
Chapter 2 ______________________________________________________________________ When taking delivery of the 3434i SF6 Leak Detector, five very important and preliminary tasks must be completed before starting to operate it: Install the BZ7002 Calibration Software to enable operation Back-up of the calibration file supplied with the instrument if calibrations are performed by LumaSense Technologies A/S. Connect the Monitor to a PC (see section 2.1). Check/Change the fuses in the monitor (see section 2.2).
Chapter 2 ______________________________________________________________________ The USB interface cable can be connected while the gas monitor is switched on. 2.2.3 Fitting the Ethernet Cable. The gas order to 7810 PC interface standard monitor can be connected to a local Ethernet network in make measurements using the LumaSoft Gas Single Point application, which communicates using the TCP/IP network protocol or to view the homepage of the gas monitor in a PC internet browser.
Chapter 2 ______________________________________________________________________ 3. Undo the upper four screws holding the frame over the backpanel of the 3434i using Pozidrive screwdriver No. 0. 4. Using the Pozidrive screwdriver No.0 undo the upper four screws which hold the frame over the front panel of the 3434i.
Chapter 2 ______________________________________________________________________ 5. Gently lift off the upper cover of the 3434i by pulling it firmly upward. 6. Use a screwdriver to remove the fuse-holder: 7. Remove the old fuse from the holder and replace it with a new. Check that the fuse has the correct rating. The fuse must be: Slow-blow (T) fuse with a rating of 2.5 A, 250 VAC, 5x20 mm, UL approved.
Chapter 2 ______________________________________________________________________ 8. Install the fuse-holder and re-assemble the 3434i again. The figure below shows the inside of the top cover of the 3434i. Note that the front side of the cover has square flanges. Place the top cover back in its correct position on top of the 3434i and screw in the all screws. 2.
Chapter 2 ______________________________________________________________________ 2.4 Setting the RS-232 Communication Parameters 2.4.1 Default RS-232 Communication Parameters. The Default RS-232 Communication parameters are shown in the table below. Baud rate Stop bits Data bits Parity Hardwire mode Handshake type Text Line Terminator 9600 1 7 Even Leased line Hardwire CR-LF Performing a full reset will set all parameters to the default settings. 2.4.
Chapter 2 ______________________________________________________________________ 2.4.3 Checking/Changing the Text line Terminator. The Text line Terminator must be set using the push-buttons on the front of the monitor. Press SET-UP S2 ▼ ▼ ▼S3 Press SET-UP to exit the set-up mode 2.4.4 Checking/Changing the Data Log and Error Log Options. The Data Log and Error Log must be set using the push-buttons on the front of the monitor. Press SET-UP S3 S1 S1 S3 ▼S1 S1 Press SET-UP to exit the set-up mode 2.
Chapter 2 ______________________________________________________________________ available Ethernet settings. The screen display now shows the following text. IS 3434i'S IP ADDRESS SET BY DHCP ? NO YES 3. Here you can select whether the IP address of the 3434i gas monitor is to be assigned by a DHCP server in the local network.
Chapter 2 ______________________________________________________________________ 6. Here you can set the IP port number for the Ethernet communication. This normally does not need to be changed. If you want to change the IP port number press the ↵ key. If the IP port numbers does not need to be changed, press the ▼ key and you will proceed to the below step 8. If you selected to change the IP port number the screen display now shows the following text. 3434i'S IP PORT NUMBER: 23 CANCEL DEFAULT 7.
Chapter 2 ______________________________________________________________________ the default stored value of the protected IP address press the S3 (DEFAULT) key. When you have set the protected IP address, press the ↵ key. If you previously selected that the IP address was NOT to be set by the DHCP server you will proceed to the below step 11. If you instead selected that the IP address to be set by the DHCP server, the screen display now shows the following text. CURRENT DHCP ADDRESS 192.168.000.
Chapter 2 ______________________________________________________________________ Fig.2.1 The 3434i gas monitor homepage 2.6 Setting-up user Levels Press the Lock function push button on the front of the Monitor. This enables setting up 3 different user levels, Level 1, Level 2 and Level 3. These user levels are password protected. Level 1 is the Operator level, which enables start/stop and reading of measurement results. Partial Reset is possible.
Chapter 2 ______________________________________________________________________ These settings are to be used to change user level or password the first time. 2.6.2 Changing the Password In order to change the Password Press the Lock function push button on the front of the Monitor. The following text is displayed. CURRENT USER LEVEL IS X CHANGE USER LEVEL CHANGE PASSWORD Press S3 “CHANGE PASSWORD” The following text appears. ENTER PASSWORD "*****" PRESS ENTER TO CHANGE VALUE 1.
Chapter 2 ______________________________________________________________________ The following text is displayed. CURRENT USER LEVEL IS X CHANGE USER LEVEL CHANGE PASSWORD 1. Press S1 “CHANGE USER LEVEL” The following text appears. ENTER PASSWORD "*****" PRESS ENTER TO CHANGE VALUE 2. Press ↵ . 3. Enter the current Password using the ▲ and ▼ keys. 4. Press ↵ . The following text appears. CURRENT USER LEVEL IS X PRESS ENTER TO CHANGE VALUE 5. Press ↵ . 6. Use the ▲ and ▼ keys to change the User level. 7.
Chapter 3 ______________________________________________________________________ Chapter 3 Philosophy of Operation July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 26 of 191
Chapter 3 ______________________________________________________________________ The monitor has several essential operational features, which enable you to operate it without undue reference to this Instruction Manual. The main features of the monitor which ensure its simple and easy operation, are listed below: • • • • • The fully, comprehensive Software BZ7002 and BZ7003. The LumaSoft Gas Single Point 7810 application software.
Chapter 3 ______________________________________________________________________ 3.2 Stand-alone Use This method of operation is available to those of you who wish to use the monitor without connection it to a PC. The monitor is set-up and the results are displayed via the monitor’s front panel. The structure of the monitor set-up can be viewed like an inverted tree. The main branches divide and separate into minor branches. These in turn divide again and again.
Chapter 3 ______________________________________________________________________ AUTO SELECT FLUSHING MODE FIXED TIME 3. To select the AUTO flushing mode, press S1. The following text is displayed. LENGTH OF SAMPLING TUBE 00.00 m PRESS ENTER TO CHANGE VALUE This branch does not divide again. At this stage you are able to define the parameters in this branch of the tree using the direction push-buttons.
Chapter 4 ______________________________________________________________________ Chapter 4 Introduction to and Familiarization with the Monitor July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 30 of 191
Chapter 4 ______________________________________________________________________ The Monitor is an extremely versatile measuring instrument, which can be used to perform almost any kind of monitoring task. Its versatility may appear overwhelming at first, but to avoid such a reaction, we suggest that you read this chapter thoroughly, and follow the practical exercises, which are included.
Chapter 4 ______________________________________________________________________ cycle to another due to the cleanliness of the filters and the degree of fluctuation in the concentration of the various gases. Table 4.1 Approximate measurement times Monitor Setup S.I.T.: “Normal” (5s) SIT : “Low Noise” (20s) Volume of Air Response Times One gas: ~27s One gas +water ~40s 140 cm3/sample One gas +water ~70s Flushing: Auto, (tube 1m) S.I.T.: “Fast” (1s) Flushing: Chamber 4s, Tube “OFF” 4.1.
Chapter 4 ______________________________________________________________________ Fig.4.1 4.1.4 An illustration of the fixed sampling intervals of the monitor when it is not sampling continuously. Continuous Sampling The Monitor is said to be sampling continuously when each measurement cycle is followed immediately by another similar measurement cycle (see Fig.4.2). Fig.4.2 4.1.
Chapter 4 ______________________________________________________________________ The maximum time you can set a pre-set monitoring period to be is 7 days. If you try to enter a greater number of days, the Monitor will automatically change the period to 7 days. However, if you do not set a pre-defined monitoring period, the Monitor will just store as much data as possible before starting to overwrite the “oldest” stored measurement results. 4.
Chapter 4 ______________________________________________________________________ 3. Attach the other end of the sampling tube to the external air-filter which is provided as an optional accessory. 4.3 Familiarization with the Monitor using the Front Panel 4.3.1 Setting the Internal Clock Before dispatch from the factory, the internal clock of the Monitor is set to the correct local (Danish) time.
Chapter 4 ______________________________________________________________________ The following screen picture appears: CURRENT DATE 2014-04-19 PRESS ENTER TO CHANGE VALUE Dates are entered as the Year-Month-Day, for example the 19th April, 2014 has to be entered as 2014-04-19. 4. To change the date, press ↵ . 5. Use the direction keys to enter the correct date. Note: press S1 to revert back to the original date. 6. Press ↵ to accept date.
Chapter 4 ______________________________________________________________________ MEASUREMENT 11. 4.3.2 SELECT SET-UP BRANCH FORMAT CONFIGURATION Press SET-UP to exit. Setting Units All data in the Monitor is stored as raw data. The different units, which you can select here, enable you to enter gas concentrations and to display temperatures, lengths and pressures in units, which you are comfortable with. These units are also used to present measurement data in a form that is most convenient for you.
Chapter 4 ______________________________________________________________________ 4. Select metres as the unit of length, °C as the temperature unit, and kPa as the pressure unit by using a procedure similar to that described in the previous steps. After the pressure unit has been selected the following text appears on the display: SELECT HUMIDITY UNIT mg/m3 PRESS ENTER TO CHANGE VALUE There are more than three humidity units to choose from therefore the means by which a unit is selected differs: 5.
Chapter 4 ______________________________________________________________________ The Auto option regulates the flushing time depending on the sampling tube length and the cleanliness of the air-filter (as the filter become dirtier, the flushing time will increase). The Fixed Time option is divided in to two parts; chamber flushing time and sample tube flushing time. Once defined, these times are constant regardless of the sampling tube length and cleanliness of the filters. Auto Option a.
Chapter 4 ______________________________________________________________________ f. Use the direction keys to define the normalization temperature: ▲ and ▼ to increase and decrease the numbers, respectively; t and u to move the cursor across the fields. g. Press ↵ to select displayed temperature. The display screen then jumps to the “head” of the MEASUREMENT branch of the Set-Up Tree and the following text is shown: SELECT MEASUREMENT SET-UP BRANCH MONITORING TASK ENVIRONMENT Fixed Time Option a.
Chapter 4 ______________________________________________________________________ TUBE FLUSHING TIME 3s PRESS ENTER TO CHANGE VALUE f. Press ↵ . g. Use the direction keys to define the tube flushing time. Note: the range of acceptable values for tube flushing ranges from 3s to 120s, increasing in 1s steps. h. Press ↵ to select displayed flushing time. The following text is displayed. NORMALIZATION TEMPERATURE 20.0°C PRESS ENTER TO CHANGE VALUE i. Press SET-UP 4.3.
Chapter 4 ______________________________________________________________________ Stand-alone Settings Monitoring Task Set-up Number = 1 Sampling = Continuous Monitor for pre-set period = No Compensate for Water Vapour Interference = Yes Compensate for cross-interference = No Measure Gas A: XXXXXX = Yes Measure Water Vapour = Yes Note: flushing is set in Environmental Parameters, section 4.3.3, and the S.I.T’s are set up in the Filters setup, section 12.3.3 1. Press SET-UP, S1 and then S1.
Chapter 4 ______________________________________________________________________ button-pushes listed in the next step will set-up the monitoring task which is described at the beginning of section 4.3.4. 3. Press S3 S1 S3 S1 S3, then press S1 until the text MEASURE WATER VAPOUR appears on the display. 4. Press the S3 button to answer “YES” to measure water vapour. 4.3.5 Store Measurement History. The following screen is displayed. NO STORE MEASUREMENT HISTORY YES a.
Chapter 4 ______________________________________________________________________ ACTIVE TASK: MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK Please note: if you do not use one of the “select” keys within a short time after the above text appears, the Monitor will automatically stop operating in Measure mode (the light-emitting diode in the MEASURE key switches off). If this happens just press MEASURE again.
Chapter 4 ______________________________________________________________________ ACTIVE TASK: MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK 5. Press S1 to start the monitoring task. The following warning then appears on the display: WARNING: DISPLAY MEMORY WILL BE DELETED PROCEED STOP Display Memory is where the Monitor stores the results of all measurements while it is performing a monitoring task.
Chapter 4 ______________________________________________________________________ This display gives the overview of the gas/vapour concentrations last measured – in this case the concentration of gas A and humidity of the water vapour are in the units that were selected – that is mg/m3 for gas A and Tdew for water vapour (see section 4.3.2). 4.3.7 Displaying Measurement Results while a Monitoring Task is in Progress If store measurement history is selected in the MEASUREMENT setup branch (see section 4.
Chapter 4 ______________________________________________________________________ MAX = maximum concentration of gas A measured during the period of time the monitoring task has been performed. MIN = minimum concentration of gas A measured during the period of time the monitoring task has been performed. ALARM 1= the user-defined concentration of gas A which, if measured by the Monitor, will trigger a switch in the Monitor and activate an external alarm relay connected to it.
Chapter 4 ______________________________________________________________________ COMPENSATION FOR WATER VAP. INTERFERENCE MONITORING TASK STARTED 2011-01-16 09:50 MEASUREMENT CHAMBER TEMPERATURE 29.6°C SAMPLE INTEGRATION TIME A: 5s B:___s C:___s D:___s W: 5s E:___s A:Sulphur hexaflouride B:________ C:___________ D: ___________ E:__________ W: WATER VAP A: 7.42E+00 B: ________ D: ____________ E: ________ C:___________ W: 8.
Chapter 4 ______________________________________________________________________ WATER: MAX 8.55E+00 MIN 7.01E+00 µ 8.15+00 σ 816E-03 W: WATER VAPOUR: 971.88mBar 2014-01-16 09:50:32 _________ 7.39Tdew W: WATER VAPOUR: 2014-01-16 09:51:33 ________ 971.88mBar 7.49Tdew 5. Press u. This causes the display to jump over to the list of measurement results for gas A. The following text appears: A: Sulphur hexafluoride 2014-01-16 09:51:33 ___________ 972.06 mBar 7.
Chapter 4 ______________________________________________________________________ The text, which appears briefly on the screen, indicates that the Monitor is aborting the monitoring task and a summary of the monitoring task will appear on the display as soon as the Monitor has aborted the task. For example: DATA IN DISPLAY MEMORY RECORDED FROM 2014-01-16 09:50 TO 2014-01-16 10:04 4.3.
Chapter 4 ______________________________________________________________________ Fig.4.
Chapter 4 ______________________________________________________________________ 1. Press q and u. The following text appears on the display: WATER VAPOUR MEASURED The displays which follow indicate the type of text which appears each time q is pressed: WATER: ALARM 1 MAX 8.55E+00 MIN 7.01E+00 µ 8.15+00 σ 816E-03 This is the statistical report of the monitored gases/vapours displayed when the monitoring task is complete.
Chapter 4 ______________________________________________________________________ After scrolling through the list of individual measurement results for water vapour the following screen displays appear: SAMPLING IS CONTINUOUS MONITORING PERIOD IS NOT PRE-SET COMPENSATION FOR WATER VAP. INTERFERENCE MONITORING TASK STARTED 2014-01-16 09:50 MEASUREMENT CHAMBER TEMPERATURE 39.
Chapter 4 ______________________________________________________________________ A: Sulphur hexafluoride 972.06 mBar 7.42 mg/m3 A:Sulphur hexafluoride 972.06 mBar 7.43 mg/m3 2014-01-16 2014-01-16 09:50:32 ________ 09:51:33 _________ Press u so you can scroll through the list showing water-vapour’s results. If you do not wish to view the results anymore, press ↵ , this acts as a “go to head” function. 4.3.
Chapter 4 ______________________________________________________________________ 4. Press SET-UP. Use q to scroll through the results of the monitoring task no. 1 displayed on the screen. Notice that the water vapour unit has been changed to ppm. 4.3.12 Changing the Pressure Unit after a Monitoring Task 1. Press SET-UP display: kPa S3 S2 and then q to reach the following SELECT PRESSURE UNIT mBar mmHg 2. Press S3 to accept the unit of mmHg. 3. Press SET-UP.
Chapter 5 ______________________________________________________________________ Chapter 5 The Monitor July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 56 of 191
Chapter 5 ______________________________________________________________________ 5.1 Introduction This chapter is primarily for those users who want to use the monitor as a stand-alone instrument. But the start-up and alarm relay sections are also of interest for the PC user. 5.2 Front Panel The front panel of the monitor is dominated by a 2 x 40 character fluorescent display screen, 3 Select push-buttons located beneath it and 5 direction push-buttons (see Fig. 5.1).
Chapter 5 ______________________________________________________________________ 5.2.1 Direction Push-buttons This group of 5 push-buttons is referred to in this manual as the direction push-buttons. ▲ & ▼ have two uses: to increase & decrease numbers, respectively, or to go to the Previous & Next Displays, respectively.
Chapter 5 ______________________________________________________________________ • • 5.2.2 If you are viewing measurement data, when ↵ is pressed, the display will move to the screen showing the text DATA IN DISPLAY MEMORY RECORDED FROM… which gives the period of time data was recorded – see Fig.4.4 for details. If the Monitor is performing measurements when ↵ is pressed, the Monitor will display the last measured concentrations of all the gases.
Chapter 5 ______________________________________________________________________ AVERAGE This push-button allows you to average measurement data. The lamp in this push-button is lit when measurement data is being averaged. You define the averaging times using the set-up mode. EVENT (If an unusual or interesting event occurs during a measurement period, you can mark the time such an event took place by pressing this push-button. Each event marker is given a serial number, which can be used as a reference.
Chapter 5 ______________________________________________________________________ 5.3 Starting-up or Restarting the Monitor 5.3.1 Introduction When the monitor is started up in the normal way, that is, by switching on the AC Mains power-switch on the back panel, the monitor responds by performing a partial reset.
Chapter 5 ______________________________________________________________________ Programmable Read Only Memory) and the integrity of the data stored in the Monitor’s Working Memory (RAM). Hardware test This test checks that the electrical, mechanical and electronic parts of the Monitor are functioning properly.
Chapter 5 ______________________________________________________________________ 5.3.3 Response of the Monitor after a Partial Reset The way in which the Monitor responds after a partial reset is dependent upon the way it was being operated at the time of the partial reset (see Table 5.1).
Chapter 5 ______________________________________________________________________ If S3 is pressed, you can come out of reset mode without performing any kind of reset. The Monitor just goes back to operating the same way it was operating before the RESET push-button was pressed. S1 PARTIAL Reset: If this level of reset is chosen the Monitor stops operating, performs a partial reset as described in the previous section (section 5.3.2) and then resumes operating in the fashion described in Table 5.1.
Chapter 5 ______________________________________________________________________ The current date is entered as Year-Month-Day for example the 24th of July 2014 is entered as 2014-07-24. The current time is entered as the time on the 24-hour clock for example 14:05 is five minutes after two in the afternoon. Table 5.2 details the range of acceptable values and the default value of the date and time. Table 5.
Chapter 5 ______________________________________________________________________ CURRENT TIME 12:00 PRESS ENTER TO CHANGE VALUE 6. To change the time, press ↵ . 7. Use the direction push-buttons to enter the correct time. If you make a mistake in entering the correct date just press S1 and start again. 8. Press ↵ to accept the time. When Step 8. has been completed the display then moves to the previous head of the set-up “tree”. 9. Press p three times.
Chapter 5 ______________________________________________________________________ 1. Press SET-UP. 2. Press S3 S1 S1 S2 . The following screen picture appears: SOUND VOLUME 1 PRESS ENTER TO CHANGE VALUE 3. To change the volume, press ↵ . 4. Use the direction push-buttons to enter the correct volume. If you make a mistake, press S1 to revert back to the original volume. 5. Press ↵ to accept volume. 6. Press SET-UP to exit the set-up function. 5.4.
Chapter 5 ______________________________________________________________________ and/or visual (for example a flashing light) alarm systems and they are activated whenever a pre-defined concentration (alarm level) of one (or more) of the gases being measured is exceeded. Alarm signals are given by opening and closing the relay contacts. Both relays are closed when the Monitor is switched off and when the Monitor is switched on.
Chapter 5 ______________________________________________________________________ current through the contacts must not exceed 100mA. AC voltages must not be connected to the Alarm Relay socket. Fig.5.2 Configuration of the pins in the alarm relay socket Alarm relay 1 Alarm Relay 2 5.6 Continuous Warm System The Continuous Warm System ensures that the monitor is kept warm at any time that is also when the Monitor is not measuring.
Chapter 6 ______________________________________________________________________ Chapter 6 Keying-in Parameters July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 70 of 191
Chapter 6 ______________________________________________________________________ 6.1 Types of Parameters There are four types of parameters: Numerical: you are free to enter the desired values. However, there may in many instances be a range in which your values must lie. These ranges can be found in the relevant sections of this manual. Text: you are able to type user-defined text, for example, the names of the gases you are measuring and when using the PC the names of your databases.
Chapter 6 ______________________________________________________________________ CANCEL This option appears over the S1 select push-button. If you change the value of a parameter on the display screen and then decide that the new value is not correct, the original parameter can be brought back to the screen by pressing S1. Default This option appears over the S3 select push-button. If you wish the parameter appearing on the display screen to be the same as the factory-defined value you can press S3.
Chapter 6 ______________________________________________________________________ If the parameter you desire is already selected (i.e. a cursor is displayed under it), then using q enables you to move directly to the next display. These procedures are common for all the parameters in the Monitor.
Chapter 7 ______________________________________________________________________ Chapter 7 Setting-up and Starting a Monitoring Task July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 74 of 191
Chapter 7 ______________________________________________________________________ Before a measurement task can commence, there are a variety of parameters that must be defined first. This is called “Setting up the Monitor”. This chapter instructs you on how to set up the monitoring system before starting to measure. As mentioned previously in this manual, the parameters can be defined using the PC Use instructions, i.e. when using a PC, or the stand-alone Use instructions, i.e.
Chapter 7 ______________________________________________________________________ Normalization Temperature If you have chosen to measure gas concentrations in the unit mg/m3, you must “enter” the temperature at which the Monitor should calculate gas concentrations. If, for example, you “enter” a normalization temperature of 25°C, the measured gas concentrations, which appear on the display during a monitoring task will be calculated in mg/m3 units at 25°C.
Chapter 7 ______________________________________________________________________ SELECT CONFIGURATION SET-UP BRANCH SYSTEM UNIT FILTERS Units branch 2. Press S2 to enter the Units branch. 3. Use the select push-buttons to define the concentration unit. 4. Use the select push-buttons to define the length unit. 5. Use the select push-buttons to define the temperature unit. 6. Use the select push-buttons to define the pressure unit. 7. The humidity unit is displayed.
Chapter 7 ______________________________________________________________________ Table 7.3 The range of acceptable values and the default value for the Fixed interval sampling Acceptable Values hours:minutes 00:01 to 01:00 Interval hours:minutes 00:01 Defalut Value hours:minutes 00:02 Flushing: the length of time the monitor flushes the measurement chamber and the sample tubing between measurements.
Chapter 7 ______________________________________________________________________ Gas Monitor Display / Averaging Period (3434i stand-alone use): this enables you to decide if instantaneous values or averaged values are displayed on the gas monitors screen. If average values are desired, then the example below illustrates how the values are calculated and displayed. Let us suppose that the Monitor has been taking measurements every 2.5 min., over a period of 30 min.
Chapter 7 ______________________________________________________________________ Table 7.6 The range of acceptable values and the default value of the averaging period Display Text ENTER AVERAGING PERIOD 00:10 Acceptable Values hours:minutes 00:10 to 12:00 Default Value hours:minutes 00:10 Stand-alone Use When the averaging function is active it will not only affect the results displayed on the screen but also the measurement results which are being printed out from the Display Memory (see Chapter 10).
Chapter 7 ______________________________________________________________________ Limit: enables you to define the gas concentration that will trigger the alarms. The acceptable values are shown in Table 7.7. Select limits: this defines the concentration level when the alarm is triggered. This parameter must be defined. Table 7.
Chapter 7 ______________________________________________________________________ MEASUREMENT 1. SELECT SET_UP BRANCH FORMAT CONFIGURATION Press S1 to enter the MEASUREMENT branch. The new text displays two branches. Monitoring Task branch 2. Press S1 to enter the Monitoring Task branch. The following text is displayed: MONITORING TASK SET-UP NUMBER PRESS ENTER TO CHANGE VALUE 1 3. Up to 10 different monitoring tasks can be defined here. These are labelled from 1 to 10.
Chapter 7 ______________________________________________________________________ will then automatically stop monitoring 5 days, 14 hours and 30 minutes after the measurement cycle with this particular set-up number is started. The range of acceptable values and the default value of the monitoring period is shown in Table 7.8. Table 7.
Chapter 7 ______________________________________________________________________ Environment branch 12. Press S3 to enter the Environment branch. 13. Use the select push-buttons to select the desired flushing mode. If you select Auto, go to step 16. If you select Fixed Time, go to step 14. 14. Use the direction push-buttons to define the Chamber Flushing Time. 15. Use the select push-buttons to select Tube Flushing. If you don’t want tube flushing, select NO and go to step 17.
Chapter 7 ______________________________________________________________________ 21. Use the select push-buttons to choose which individual parameters should be printed. Each time one of the select push-buttons is pressed, the next parameter is displayed. This step can be repeated up to 7 times, depending on the number of filters installed. 22. Use the select push-buttons to select the Text line Terminator. 23. The text screen returns to the top of the set-up tree.
Chapter 7 ______________________________________________________________________ GAS A HIGH ALARM LIMIT 2 _________mg/m3 PRESS ENTER TO CHANGE VALUE 5. Repeat steps 2 to 4 to set the alarms for the other filters. 6. Press SET-UP to exit the alarm set-up. 7.4 Starting a Monitoring Task Monitoring tasks can be started in two ways. They can be started immediately, or set to start at a pre-set time. The duration of the monitoring sequence can also be determined.
Chapter 7 ______________________________________________________________________ ACTIVE TASK : MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK Please note: if you do not use one of the “select” keys within a short time after the above text appears, the Monitor will automatically stop operating in Measure mode (the light-emitting diode in the MEASURE key switches off). If this happens, just press MEASURE again.
Chapter 7 ______________________________________________________________________ ACTIVE TASK : MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK 5. To start the measurement immediately, press S1. To delay the start, press S2. The following warning then appears on the display: WARNING : DISPLAY MEMORY WILL BE DELETED PROCEED STOP 1. Press S1.
Chapter 7 ______________________________________________________________________ Immediate Start If you selected an immediate start, the following text appears on the screen: MEASUREMENT IN PROGRESS RESULTS NOT YET AVAILABLE 2. When the first measurement cycle is complete the Monitor will automatically display the results and update them every time a new measurement cycle is completed. An example is shown below: A : 4.52 E + 01 D : __________ B :__________ E : __________ C : _________ W : 8.
Chapter 8 ______________________________________________________________________ Chapter 8 Viewing Measurement Data – Using the Monitor July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 90 of 191
Chapter 8 ______________________________________________________________________ 8.1 Displayed Monitoring Task Data When the Monitor is switched on, but not being operated in any mode, the screen display text identifies the data stored in its Display Memory, by displaying the day and time of the first stored measurement cycle of the monitoring task, as well as the day and time of the last measurement cycle of the monitoring task.
Chapter 8 ______________________________________________________________________ shown, press the INFO button. Text will appear on the screen to indicate why this particular measurement has been marked. The number which is shown on the display – between time and concentration – is only “filled-in” after completion of a monitoring task. The number indicates the order in which the measurements were made.
Chapter 8 ______________________________________________________________________ Fig.8.1 Organisation of monitoring-task data displayed on the monitor’s screen.
Chapter 8 ______________________________________________________________________ u &t Using these push-buttons users can scroll “horizontally” through any vertical level of data. For example, if the statistical analysis of the measurement results for water-vapour are displayed on the screen, then by using u you can read the statistical analysis of the measurement results for gas A,W and then go back to the original display (see Fig.8.1).
Chapter 8 ______________________________________________________________________ 2.
Chapter 8 ______________________________________________________________________ n= N ∑ (C ) n = linear average of all the measurements made during N the averaging period. CTWA = n =1 Where: Cn = constant concentration measured at time Tn; N = the total number of measurements performed during the averaging period T min.
Chapter 8 ______________________________________________________________________ 8.2.1 Statistical Analysis Terms In the statistical analysis of the measurement results for each gas (see 3 in Fig.8.1) the following statistics appear: The Mean Value (µ) – this is the linear average of all measurements of a gas taken during the total monitoring period.
Chapter 8 ______________________________________________________________________ “EVENT NO” will appear on the screen only if the Event Mark button was used during the monitoring task. In this case the letter “E” will also appear as a Common Mark.
Chapter 8 ______________________________________________________________________ Common Marks: The symbol “P” is replaced by the text “3434i Restarted”. This indicates that the Monitor stopped and then started-up again sometime between the previous sample time and the time which appears alongside this message. The symbol “E” is replaced by the text User Event NumberX: This indicates that the EVENT button was pressed while this measurement cycle was being performed.
Chapter 9 ______________________________________________________________________ Chapter 9 Storage of Data in the Monitor’s Memory July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 100 of 191
Chapter 9 ______________________________________________________________________ In order to fully understand the functioning of the Monitor it is necessary to know something about the different types of memory the Monitor uses, the kind of data stored in each type of memory, and how this data is affected by the various operations performed by the Monitor.
Chapter 9 ______________________________________________________________________ Block 1 – contains calibration factors and 3 optical-filter parameters Block 2 – contains 3 of the 6 set-up parameters found under the Filters branch of the set-up “tree” Block 3 – contains all other parameters in the Set-Up Tree Block 1 – Calibration Factors and 3 Optical-filter Parameters: There are six different “data files” in this block.
Chapter 9 ______________________________________________________________________ Fig.9.1 Schematic diagram showing the structure of the Monitor’s memory Before calibrating a particular filter, one of the filter’s banks is made active (by operating the Monitor in Set-Up mode and “entering” the chosen filter-bank number for the filter being calibrated). The filter bank No.
Chapter 9 ______________________________________________________________________ filter is calibrated. For example, Filter Bank No.”1” for storage of the calibration factors for Sulphur hexafluoride. After calibration of the filter UA 0988 the Monitor is able to accurately monitor the gas mentioned. By selecting the correct FILTER BANK NO. in the set-up of the Monitor before a monitoring task is started, the user determines which calibration factors will be used during the task.
Chapter 9 ______________________________________________________________________ Block 2 – contains 2 of the 5 optical filter parameters with values which are the same as those found in Block 2 of the Source Memory. Block 3 – contains all other set-up parameters (i.e. excluding the optical filter parameters) with active set-up values. Block 4 – contains data collected during the performance of a monitoring task.
Chapter 9 ______________________________________________________________________ Alternatively, the data in Display Memory can be printed out by connecting a printer to the Monitor and transmitting data via the RS 232 interface port of the Monitor (see Chapter 10). The storage space in Display Memory is finite. Once this memory has been filled by data from a monitoring task any additional data collected will start to overwrite some of the data already stored there.
Chapter 9 ______________________________________________________________________ where (in the Source Memory) to store the calibration factors calculated during the calibration task. Fig.9.2 The state of the Source Memory after completion of a CALIBRATION TASK After completion of a calibration task the calibration factors, which are found in the Working Memory, are entirely dependent upon the Filter Bank No., which is active for the optical filter. If Filter Bank No.
Chapter 9 ______________________________________________________________________ Fig.9.3 Effect of changing a UA number in the “active” set-up For example, if the UA number of the filter installed in position “A” of the filter carousel is changed in the active set-up then calibration factors are deleted from the active file “A” in the Working Memory and from files A 1, A 2, A 3, A 4 and A 5 in the Source Memory of the monitor (see Fig.9.3).
Chapter 9 ______________________________________________________________________ 4. The active values of the Optical Filter Parameters in Block 2 of the Working Memory are replaced by the values of the optical filter parameters in Block 2 of the Source Memory. Note that under normal circumstances the data in these blocks is the same. However, to ensure that the data in these blocks is the same, data is read from Source memory into the Working Memory during a FULL RESET of the Monitor. 5.
Chapter 9 ______________________________________________________________________ Monitor’s Background Memory to prevent it from being overwritten (and therefore lost) by measurement data stored during the next monitoring task. The same amount of data can be stored in both the Background Memory and the Display Memory.
Chapter 9 ______________________________________________________________________ Task No. 4: The data occupies 10% of the total capacity of the Display Memory. Let us suppose that we STORE the data from this task in the Background Memory – let us say it is stored in location 4. Background Memory is now 100% full (see Fig.9.5). The Background Memory has now been filled-up by the data from the four monitoring tasks described above, even though location nos. 5 – 10 (inclusive) has not been used.
Chapter 9 ______________________________________________________________________ Whenever the Monitor is operating in Memory mode the user can, by pressing the INFO push-button, find out what percentage of the Background Memory is occupied and which location numbers have been used to store data. Fig.9.5 illustrates the status information one can obtain from the Monitor during various stages of the four monitoring tasks described above.
Chapter 9 ______________________________________________________________________ 9.3.2 Recalling Data from Background Memory To recall data stored in Background Memory to Display Memory: 1. Press Memory S2. LOCATION NUMBER 1 PRESS ENTER TO CHANGE VALUE 2. Use the direction keys to select the correct location number. The following text is displayed. WARNING : DISPLAY MEMORY WILL BE DELETED PROCEED STOP 3. If you want to continue, press S1, and the following text is displayed.
Chapter 9 ______________________________________________________________________ 9.3.3 Deleting Data from Background Memory To delete data which has been stored in Background Memory: Press MEMORY S3. LOCATION NUMBER 1 PRESS ENTER TO CHANGE VALUE Use the direction keys to select the location number.
Chapter 9 ______________________________________________________________________ 9.3.5 Upload Memory data using the BZ7003 Offline Software. After recalling data stored in any of the background memories to the display memory see section 9.3.2. The data now stored in the display memory can be uploaded using the BZ7003 Offline Software and stored in excel or text format files. Regarding the use of BZ7003 please refer to the user manual BE6035.
Chapter 10 ______________________________________________________________________ Chapter 10 Using a Printer with the Monitor July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 116 of 191
Chapter 10 ______________________________________________________________________ 10.1 Introduction This chapter informs you on how to obtain hard copies of data stored in the memory of the monitor. This could, for example, be existing calibration data, which you need prior to recalibrating. For those of you who want to use the monitor as a stand-alone instrument, this chapter enables you to print-out measurement data, error-logs and data-logs.
Chapter 10 ______________________________________________________________________ 4. Locate the input port on the printer. 5. Push the connector at the other end of the cable on to this socket, and secure it firmly using the securing screws. The instruments can be turned on at the mains now. 10.3 Setting-up Communication Parameters WARNING!: You must perform a PARTIAL RESET of the Monitor (press the RESET and S1 buttons) if the active value of any parameter in this branch of the Set-Up Tree is changed.
Chapter 10 ______________________________________________________________________ SELECT PARITY CHECK The user chooses whether or not transmitted data should be checked for transmission errors using the parity checking system. SELECT HARDWIRE MODE The user chooses which communication line (wire) should be used to control data transmission between the Monitor and other equipment. SELECT HANDSHAKE TYPE The user chooses which type of “handshake” should be used for transmission via the RS 232 interface.
Chapter 10 ______________________________________________________________________ 3. When you have been through all the parameters, the monitor returns to the top of the Communication branch of the Set-Up Tree. 4. Press S3 S1 and then SET-UP. This selects the RS-232 port as the communication port for the printer. 5. Press RESET and S1 to partially reset your Monitor. 10.3.
Chapter 10 ______________________________________________________________________ 1. After starting the HyperTerminal program please select a name for the connection. 2. Press OK to continue.
Chapter 10 ______________________________________________________________________ 3. Press Cancel to continue. 4. Press Yes to continue. 5. Press OK to continue. Connect using ‘TCP/IP (Winsock)’ and enter the IP Address of the gas monitor as the ‘Host address’. Press OK to continue.
Chapter 10 ______________________________________________________________________ 6. You are now able receive printed output from the gas monitor in the terminal window that you have just created. Below is shown a measuring task session. 10.4 Additional Parameters Required The other output parameters which determine the format of printouts are shown in Table 10.2 together with available choices and factory default values. Table 10.
Chapter 10 ______________________________________________________________________ SELECT TEXT LINE TERMINATOR The user chooses which character the Monitor should use as “end of text line” when data is transmitted from the Monitor. 10.
Chapter 10 ______________________________________________________________________ 10.7 Printing-out Data from the Monitor Before data can be printed out from the Monitor, the communication parameters must be checked/changed. This is explained in section 10.3.1 for RS-232 communication and in section 10.3.2 for the Ethernet communication. The text line terminator must be set (see section 10.4) before printing can proceed.
Chapter 11 ______________________________________________________________________ Chapter 11 Maintenance of the 3434i July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 126 of 191
Chapter 11 ______________________________________________________________________ The only regular maintenance required for the 3434i is: Calibration – approximately every 3 months (see Chapter 12). Changing the fine air-filter paper in the internal and external airfiltration units (see section 11.1). Cleaning of the filter in the ventilation unit (see section 11.2). 11.1 Changing the Fine Air-filters The monitor is equipped with an internal filtration unit.
Chapter 11 ______________________________________________________________________ Whenever the Monitor needs to be calibrated, we recommend that the fine filter-paper in the internal air-filtration unit is changed before you calibrate. The fine filter-paper in the internal air-filtration unit must be changed at least twice a year; and more frequently if the environment in which the monitor is working contains large quantities of particulate material suspended in the air.
Chapter 11 ______________________________________________________________________ Acetone (analytically pure) Spare fine filter-paper DS 0759 Tweezers with Teflon coating Cotton buds Clean rubber gloves To change the filter-paper: Switch the power to the monitor “Off” by using the AC mains power switch on its back panel (press O), and then pull out the plug connecting the monitor to the AC mains power supply. Put a rubber glove on the hand, which is to hold the parts of the unit.
Chapter 11 ______________________________________________________________________ Fig.11.5 Cleaning the surfaces of the internal air-filtration unit Notes: Only proceed to the next step when the acetone has completely evaporated from the air-filter retaining disc and filtration unit. Each of the fine filter-papers DS 0759 are packed between two pieces of packing paper. The fine filter-paper is always white in colour. Remove a new fine filter-paper from its packaging using the tweezers.
Chapter 11 ______________________________________________________________________ Fig.11.7 Refitting the retaining disc 11.1.2 Changing the filtration Unit Filter-paper in the External Air- While you do this, we recommend that you wear clean, rubber gloves. Tools and equipment required: Acetone (analytically pure) Spare fine filter-paper DS 0759 Tweezers with Teflon coating Cotton buds Clean rubber gloves To change the filter-paper: Switch off the Monitor.
Chapter 11 ______________________________________________________________________ Moisten a cotton bud with pure acetone and use it to clean the surfaces of the unit, the retaining disc and the coarse air-filter. Refer to Fig.11.8. Place the stub-end of the unit downwards, on a clean, dry surface; the coarse air-filter, with its screw-end downwards on a clean, dry surface and rest the retaining disc against it.
Chapter 11 ______________________________________________________________________ Fig.11.9 11.3 Back panel of the 3434i showing the ventilation unit Cleaning the Instrument It is recommended to clean the instrument using a damped cloth.
Chapter 12 ______________________________________________________________________ Chapter 12 Calibration of the Optical Filters July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 134 of 191
Chapter 12 ______________________________________________________________________ 12.1 About the Installed Optical Filters The optical filter UA0988 has been installed in the position marked “A” of the filter carousel wheel in your Monitor. A special optical filter, which is selective to water vapour, is always installed in position “W”. The optical filter has to be span calibrated with the gas it is to measure. If this span calibration is not performed the Monitor is unable to measure accurately.
Chapter 12 ______________________________________________________________________ 12.2 What is Calibration and Why is it Necessary? In order to understand calibration, it is necessary to look at what happens inside the analysis cell during a gas concentration measurement. A sample of air is drawn into the cell. The cell is then sealed off and light is sent from the infra-red source via a chopper (to pulsate it) through an optical filter.
Chapter 12 ______________________________________________________________________ As it is the optical filter, which determines the wavelength of light, cell noise will depend upon the optical filter being used. The cell-noise signal is measured during the Zero-point Calibration of each filter. A supply of dry, zero gas is attached to the air-inlet of the Monitor and the signal in the cell is measured with the installed optical filter (“A”).
Chapter 12 ______________________________________________________________________ Monitor. The signal in the cell is measured with the water vapour filter and with the installed optical filters. The water vapour in the cell absorbs light from the water-vapour filter and from the installed filter, producing signals which are related to water-vapour’s relative absorption of the light at the wavelengths transmitted by the optical filter (see Fig.12.2).
Chapter 12 ______________________________________________________________________ calibration factors compare with the “new” calibration factors calculated during re-calibration tasks, see section 12.3.1. Fig.12.3 illustrates only part of a typical calibration data print-out. Note that there are five different filter banks, which contain calibration data. These banks are numbered from 1 to 5. This enables each filter to be calibrated to measure up to 5 different gases.
Chapter 12 ______________________________________________________________________ e. humidity-interference calibration data in this filter bank was updated. Humidity gain factor: if a number appears here this means that this filter bank contains calibration data obtained during the humidity-interference calibration of filter “A”. f.
Chapter 12 ______________________________________________________________________ When the installed optical filter has been zero-point, humidityinterference and span calibrated then the Monitor is able to perform accurate measurements. Fig.12.3 12.3.
Chapter 12 ______________________________________________________________________ 1. Press SET-UP S3 S3. The following text appears on the screen display: CHECK AND / OR CHANGE SET-UP FOR FILTER A NO YES 2. Press S3 and the following text appears on the screen display: SELECT UA NUMBER FOR FILTER A 0988 PRESS ENTER TO CHANGE VALUE The UA number of the filter installed in position “A” should have already been checked (see section 12.3.2).
Chapter 12 ______________________________________________________________________ 7. Press ↵ and use the direction push-buttons to enter the desired name. 8. Press ↵ to “accept” the name you have “entered” on the display screen. The following text then appears: MOLECULAR WEIGHT OF GAS A 1.000 PRESS ENTER TO CHANGE VALUE 9. Press ↵ and use the direction push-buttons to “enter” the molecular weight of the gas to be measured by filter A. 10.
Chapter 12 ______________________________________________________________________ 17. Press ↵ and use p and q to display the desired Sample Integration Time. 18. Repeat step 13 and 14 to enter the desired alarm levels. 19. Press ↵ , this returns you to the top of the Configuration Set-up Tree. 12.3.4 Setting-up the Monitor to Print a Data Log This is only necessary for those of you who do not use the Calibration Software BZ7002 to calibrate the Monitor.
Chapter 12 ______________________________________________________________________ meter or similar apparatus; and the tube attached to point 3 is attached to the cylinder of gas which is to be used during calibration. Fig.12.4 General equipment required for a calibration task Attaching a gas flow meter serves two vital functions (see Fig.12.5): Fig.12.
Chapter 12 ______________________________________________________________________ tube. This condition must be avoided because atmospheric air will be drawn into the Teflon tube system via the flow meter and cause dilution of the calibration gas. This will affect the accuracy of your calibration. • It functions as an escape valve. When the pressure of the gas in the tubing becomes greater than atmospheric pressure, gas flows out to the atmosphere via the flow meter.
Chapter 12 ______________________________________________________________________ respective tubes in the flasks. It is vitally important that any water, which collects in the extra flask, does not cover the short outlet tube “B”. It is very important that the concentration of water vapour used is below the saturated water-vapour pressure of the air in the room where calibration is being performed, otherwise water vapour will condense out in the analysis cell.
Chapter 12 ______________________________________________________________________ calibration set-up. The calibration tasks are set-up while operating in Measure mode. Notice the following: 1. Before starting to set-up a calibration task you must make sure that you choose the correct FILTER BANK NO. to store the calibration factors which will be calculated during calibration (see section 12.3.3). 2.
Chapter 12 ______________________________________________________________________ Fig.12.7 Schematic diagram showing the calibration task Set-Up Tree (general) Before setting-up a calibration task, make sure that the filter bank you make active for the filter which have already been calibrated only contain calibration factors which need to be up-dated. In this way you can prevent your original calibration factors being overwritten by the new ones.
Chapter 12 ______________________________________________________________________ “A”,is installed in your Monitor and have been calibrated. Suppose the calibration data block of your Monitor contains the information shown in Fig.12.8 (notice no filter is installed in position “E”) Suppose You now install an optical filter in position “E”. This filter has to be fully calibrated .
Chapter 12 ______________________________________________________________________ Fig.12.9 12.6 Illustration of the calibration data stored in the filter banks of filters “A” to “E” after a zero-point calibration task Zero-point Calibration To calculate the concentration offset factor for a filter (during a zero-point calibration) it is necessary to have a humidity gain factor for the filter, and vice versa.
Chapter 12 ______________________________________________________________________ 12.6.1 Setting-up a Zero-point Calibration – Stand-alone Use Fig.12.
Chapter 12 ______________________________________________________________________ Use the Set-up Tree in Fig.12.10 to help you navigate through the different screen displays. Note: before starting a calibration, S.I.T (see section 12.3.3) and Flushing Type (see section 7.2) need to be set so that they are the same as those values used when monitoring. 1. For each installed filter, enter the no.
Chapter 12 ______________________________________________________________________ RESULTS NOT YET AVAILABLE PLEASE WAIT Once the first measurement result is available the screen text illustrated above is replaced by a screen displaying the measurement results – for example the following: W: µ : 11.3µV σ --- V 1 38.6°C PRESS ENTER WHEN RESULTS ARE STABLE As soon as measurement results are available they not only appear on the display (see Fig.12.
Chapter 12 ______________________________________________________________________ have been completed the number (n) will also show 6 because the results of the first and second measurements have been overwritten by the 7th and 8th measurement results …and so on. 2. Let the Monitor continue measuring the zero gas until the temperature in the cell is stable. Look at the print-out of the average and standard deviation measurements for (1) the watervapour and (2) all the other filters.
Chapter 12 ______________________________________________________________________ 12.7.1 Setting-up a Humidity-interference Calibration Task Fig.12.
Chapter 12 ______________________________________________________________________ concentration offset factor for the filter, and vice versa. Note: If a concentration offset factor is not stored in each of the filter banks which are active during a zero-point calibration, then it is necessary to perform a combined zero-point and humidityinterference calibration task. The set-up of this combined task is discussed in section 12.11.
Chapter 12 ______________________________________________________________________ c. Press ↵ . d. Use the pressure-valve on the zero-gas cylinder to regulate the flow of gas so that when the Monitor’s pump is running there is a positive flow of gas out of the flow meter. This will ensure that the wet, zero gas is not contaminated by atmospheric air.
Chapter 12 ______________________________________________________________________ average and standard deviation measurements for (1) the watervapour and (2) all the other filters. When all these values have stabilised, calibration measurements do not need to continue. Continue to the next Step. 4. Press ↵ . This will cause the results of measurements made with all the other installed filters to be displayed, for example: A : µ : 19.34 µV σ : 212 nV 6 39.
Chapter 12 ______________________________________________________________________ During span calibration a supply of a particular gas (e.g. gas A1) of known concentration is attached to the air-inlet of the Monitor and the total signal in the cell is measured using the water-vapour filter and the filter which is being span calibrated (for example “A”).
Chapter 12 ______________________________________________________________________ different gas. In this way the conversion factor for each gas is stored in separate filter banks (for stand-alone use see Fig.12.8). The gas conversion factor stored in the selected filter bank during a span calibration task will be overwritten by the new gas conversion factor calculated during the span calibration of the filter.
Chapter 12 ______________________________________________________________________ Fig.12.14b Graph showing a non- linear measurement curve The question about whether to perform a single- or a two-point span calibration is difficult to answer, as it is dependent on how linear the relationship is between a gas’s concentration and the signal it produces in the cell (see Fig.12.13, Fig.12.14a and Fig.12.14b).
Chapter 12 ______________________________________________________________________ Gas Concentrations – Two-point Calibration During a two-point span calibration, the total signal in the cell (Vlow) is measured first with a low concentration (Clow) of span gas, and then the total signal in the cell (Vhigh) is measured with a high concentration (Chigh) of span gas.
Chapter 12 ______________________________________________________________________ In the example in Fig.12.14b, we have measured 2400 ppm with 2700 ppm gas. This gives an error of 11% and an even greater error at the highest concentration level. 12.8.1 Setting-up a Span Calibration – Stand-alone Use Fig.12.
Chapter 12 ______________________________________________________________________ 1. For each filter being span calibrated, enter the No. of the filter bank where you wish the Monitor to store the conversion factors which will be calculated during the span calibration task. 2. Press MEASURE displayed: S3 S3 S1 then the following text will be PERFORM ZERO-POINT CALIBRATION? NO YES 3.
Chapter 12 ______________________________________________________________________ running there is a positive flow of gas out of the flow meter. This will ensure that the calibration gas is not diluted by atmospheric air. The following text appears on the screen: RESULTS NOT YET AVAILABLE PLEASE WAIT Once the first measurement result is available the screen text illustrated above is replaced by a screen displaying the measurement results – for example the following: W : µ : 5.34 µV σ : 212 nV 3 40.
Chapter 12 ______________________________________________________________________ A : µ : 123.8 μV σ : 617 nV 6 40.4 °C PRESS ENTER WHEN RESULTS ARE STABLE These results have been shown on the data-log print-out. If they have stabilised continue to the next Step. 4. Press ↵ . The text CALCULATING CALIBRATION FACTORS – PLEASE WAIT appears on the screen. The Monitor only uses the last six measurement results when calculating any calibration factor.
Chapter 12 ______________________________________________________________________ 12.9.1 Setting-up a Zero-point Calibration of the Watervapour Filter If you wish to zero-point calibrate the water-vapour filter you must zero-point calibrate all installed optical filters. The concentration offset factors calculated during zero-point calibration of the filter “A” will be stored in the filter banks (the active during calibration).
Chapter 12 ______________________________________________________________________ Fig.12.
Chapter 12 ______________________________________________________________________ 12.9.2 Performing a Zero-point Calibration of the Watervapour Filter As explained in the previous section, a zero-point calibration of the water-vapour filter has to be done together with the zero-point calibration of the other installed optical filters. The latter task has been fully described in section 12.6.
Chapter 12 ______________________________________________________________________ water-vapour filter must be stored in the Monitor’s calibration data block. During span calibration of the water-vapour filter it is necessary to attach a supply of zero-gas containing a known concentration of water vapour to the Monitor. As explained in the Humidityinterference Calibration (Section 12.7.
Chapter 12 ______________________________________________________________________ Fig.12.
Chapter 12 ______________________________________________________________________ 12.9.4 Performing a Span Calibration of the Water-vapour Filter Section 12.4.1 describes a good method of producing water-vapour of known concentration. The directions for performing a span calibration of water-vapour filter are similar to those for performing a humidity-interference calibration of the other installed filters is as described in section 12.7.2.
Chapter 12 ______________________________________________________________________ The procedure for setting-up a combined zero-point and humidityinterference calibration task is as follows: Fig.12.
Chapter 12 ______________________________________________________________________ 1. Press Measure displayed: S3 S3 S1 then the following text will be PERFORM ZERO-POINT CALIBRATION ? NO YES 2. Follow the set-up of a combined zero-point and humidityinterference calibration by following the black arrows in the schematic diagram shown in Fig.12.18. The following text will appear: ZERO-POINT CALIB. CONNECT CLEAN, DRY AIR AND PRESS ENTER WHEN READY 3. Refer to section 12.6.
Chapter 12 ______________________________________________________________________ shown on the screen further information about the condition of the Monitor can be obtained by pressing INFO. Chapter 13 lists all the error messages connected with uncertain calibration results and gives an explanation of their significance so that the user can ascertain what action to take if such messages are displayed after calibration.
Chapter 13 ______________________________________________________________________ Chapter 13 Messages Related to Calibration July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 177 of 191
Chapter 13 ______________________________________________________________________ All the possible error messages connected with calibration results are discussed in this chapter. Messages fall into three calibration categories: (1) successful; (2) uncertain and (3) invalid. An explanation is given of each message and its significance so that the user can ascertain what action to take if such messages are displayed after calibration. 13.
Chapter 13 ______________________________________________________________________ 13.3 “Invalid” Calibration Messages The messages listed below indicate: (1) that the calibration factor calculated during the calibration task you have just performed is not valid and therefore has not been stored in any filter bank; and (2) that the calibration task must therefore be repeated. ZERO-POINT CALIBRATION INVALID* HUM. INTERFERENCE CALIBRATION INVALID* ZERO-POINT/HUM. INTERF. CALIB.
Chapter 13 ______________________________________________________________________ WET MEAS. < DRY MEAS. FOR WATER FILTER and HUMIDITY INTERFERENCE FACTOR < 0 Both these messages are associated with a combined zero-point and humidity-interference calibration task. WET MEAS. < DRY MEAS.
Chapter 13 ______________________________________________________________________ Fig.13.1 Curve illustrating the two points measured during a twopoint span calibration task GAS X: LOW MEAS. > HIGH MEAS. This message indicates that the signal measured in the cell when the gas concentration was low is found to be greater than the signal when the gas concentration was high.
Chapter 13 ______________________________________________________________________ When the two signals have been measured, the Monitor then finds the value δ = 1% of Vh and finds out the relationship between the measured values: If there is a perfectly linear relationship between the points Clow, Vlow and Chigh, Vhigh then: Vlin = ( Ch / Cl ) * Vl GAS X: MEAS. INDICATES LINEAR COHERENCE This message will be given in the status display if Vl lies between the values Vlin – δ and Vlin + δ.
Chapter 13 ______________________________________________________________________ relationship between the gas signal in the cell and the concentration of the gas (in which case only a single-point span calibration is required). SPAN CALIBRATION IMPOSSIBLE This message is associated with the span calibration of the watervapour filter. The above message indicates that the Monitor cannot calculate the gas conversion factor.
Chapter 13 ______________________________________________________________________ SIGNIFICANT CHANGE IN CALIB. FACTORS This message is associated with the span calibration of one (or more) of the filters. The above message indicates that the Conversion factor calculated during span calibration of a particular filter deviates more than 15% from the Conversion factor calculated during the last span calibration of this filter.
Chapter 14 ____________________________________________________________________ Chapter 14 Warning and Error Messages July 2014 _____________________________________________________________________________ BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S Page 185 of 191
Chapter 14 ____________________________________________________________________ When the Monitor is switched on, and while it is being operated, the Monitor regularly performs a series of self-tests, which check that the various mechanical, electrical and electronic components of the Monitor are functioning correctly. These self-tests are described in more detail in Chapter 5. You can select to disable the regular selftests if desired (see section 5.4.3).
Chapter 14 ____________________________________________________________________ Warning and Error Messages The following table gives most of the error and warning messages contained in the test Hierarchy of the Monitor. There is a description of each fault as well as the possible cause of each fault. The user must evaluate the significance of each message.
Chapter 14 ____________________________________________________________________ CLOCK SET TO DEFAULT ERROR DETECTED IN CLOCK SETTINGS FACTORS SET TO DEFAULT ERROR DETECTED IN CALIBRATION FACTORS MEMORY SET TO DEFAULT ERROR DETECTED IN BACKGROUND MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN DISPLAY MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN INTERNAL MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN SOURCE MEMORY PARAMETERS SET TO DEFAULT ERROR DETECTED IN CONFIG:/FORMAT PARAMETER PARAMETERS SET TO
Chapter 14 ____________________________________________________________________ X-ON/X-OFF HANDSHAKE CONFLICT The Monitor receives the handshake signal from the RS232 CTS ( clear to send) line, but it has not been set-up to use this CTS line TIMEOUT. DEVICE NOT CONNECTED Monitor wishes to send data (data-log or error-log) via the IEEE interface, but there is no response from the device with the address entered in the Monitor set-up TIMEOUT.
Chapter 14 ____________________________________________________________________ Error Messages AIR SHUNT BLOCKED. SAMPLE ABORTED CHOPPER FAILED INTERNAL TEMPERATURE OUT OF RANGE IR-SOURCE TEMPERATURE OUT OF RANGE MICROPHONE TEST FAILED PUMP TEST FAILED MODULE STATUS ERROR DETECTED Description of Fault Possible Cause The pressure of air in the analysis cell is too high. The microphones risk being damaged by exposed to such pressure. The air shunt valve is either defective or blocked.
3434i LumaSense Technologies A/S Energivej 30 DK-2750 Ballerup, Denmark Tel.:(+45) 44 20 01 00 Fax: (+45) 44 20 01 01 http://www.lumasenseinc.
