Vaisala HUMICAPHand-Held Moisture and Temperature in Oil Meter MM70 USER'S GUIDE M210498en-A January 2004
PUBLISHED BY Vaisala Oyj P.O. Box 26 FIN-00421 Helsinki Finland Phone (int.): Fax: (+358 9) 894 91 (+358 9) 8949 2227 Visit our Internet pages at http://www.vaisala.com/ © Vaisala 2004 No part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice.
_________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION............................................................................ 4 Safety......................................................................................... 4 Warranty .................................................................................... 5 CHAPTER 2 PRODUCT DESCRIPTION ............................................................................
User's Guide _______________________________________________________________________ Graphic history.....................................................................22 User interface..........................................................................23 Selecting language ..............................................................23 Automatic power OFF..........................................................24 Changing the shortcut keys .................................................
_________________________________________________________________________________ CHAPTER 13 ERROR MESSAGES.................................................................................... 47 CHAPTER 14 MAINTENANCE ........................................................................................... 48 Changing the filter and sensor ............................................. 48 Clean the sensor before storing the MMP78 probe and before calibration .............................................
User's Guide _______________________________________________________________________ CHAPTER 1 GENERAL INFORMATION Safety Throughout the manual, important safety considerations are highlighted as follows: WARNING Warning alerts you to a potential hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury or even death. CAUTION Caution warns you of a potential hazard.
Chapter 1 _________________________________________________________ General Information Warranty Vaisala hereby represents and warrants all Products manufactured by Vaisala and sold hereunder to be free from defects in workmanship or material during a period of twelve (12) months from the date of delivery save for products for which a special warranty is given.
User's Guide _______________________________________________________________________ CHAPTER 2 PRODUCT DESCRIPTION Vaisala's Hand-held MM70 MM70 consists of two main units: MI70 indicator and MMP78 probe. MM70 Hand-held humidity meter incorporates Vaisala's advanced HUMICAP technology which enables reliable and high performance moisture in oil measurement. Vaisala MM70 is delivered with a factory calibration certificate.
Chapter 2 __________________________________________________________ Product description 2 1 2 3 MI70 indicator Recharger connector Connector ports for probes and cables 4 Probe MMP78 5 Calibration button under the screw 6 Probe filter 7 Clasp nut 8 Fitting body 9 Manual press tool 10 Protective cap 11 Plastic wrench MI70 INDICATOR 1 Power ON/OFF 3 Port I MMP78 PROBE Port II Rugged probe with a long stainless steel shaft.
User's Guide _______________________________________________________________________ CHAPTER 3 PREPARATIONS BEFORE USE Installing and recharging of batteries 1. If you are using alkaline batteries, unscrew the back plate of the indicator and insert the alkalines. If MM70 is ordered with rechargeable battery pack, it is already in place as shipped from the factory. 2. Recharge the battery pack as follows: Plug in recharger connector to the base of the indicator and connect the recharger to wall socket.
Chapter 3 ____________________________________________________Preparations BEFORE use 4. To change the date, select Date and press SET. Change the date by using any of the buttons. To confirm the date, press OK. The default date presentation format is: year-month-date. If you want to change the format, see page 25. 5. To change the time, select Time and press SET. Change the time by using arrow buttons.To confirm the time, press OK. The default time presentation format is 24-hour clock.
User's Guide _______________________________________________________________________ CHAPTER 4 INSTALLING THE PROBE Selecting a place for the probe Select a place which gives a true picture of the process. Oil should circulate freely around the sensor; a rapid oil flow is recommended. Install the probe directly into the circulation system and not into the oil reservoir because of deposition. It is recommended that the sensor head is installed directly in the process through the ball valve assembly.
Chapter 4 __________________________________________________________ Installing the probe 1 2 1. clasp nut, 27 mm hex nut 2. fitting body, 24 mm hex head . MMP78 pipe dimensions (in mm); 400 mm (adjustment range 340 mm). Tightening the clasp nut 1. Adjust the probe to a suitable depth according to the type of installation and tighten the clasp nut first manually. 2. Tighten the clasp nut first manually. 3. Mark the fitting screw and the clasp nut. 4. Tighten the nut a further 30 - 40° (ca.
User's Guide _______________________________________________________________________ When the probe is used in a pressurized processes the sensor head should preferebly be installed through a ball valve assembly. Sealing thread cutting for the fitting body. fitting body hex = 24mm tapered thread R1/2 ISO 7/1 parallel thread G1/2 ISO 228/1 (BS 2779, JIS B0202) ø19mm drilling >10.5mm >40mm Process or pipe wall sealing with: 1. LOCTITE® No 542 + activ. No 7649 (t=-55...+150 °C) 2.
Chapter 4 __________________________________________________________ Installing the probe 1. Shut down the process if the process pressure is more than 10 bars. If the pressure is lower there is no need to shut down the process. 2. Make the installation according to the figure below. Install the sensor head transversely against the direction of the process flow. 3. Make sure that the temperature at the measurement point is equal to that of the process, otherwise the moisture reading may be incorrect.
User's Guide _______________________________________________________________________ Mounting the probe for direct measurement (no pressure) 1. Lift up the clasp nut, see picture. 2. Install the probe into measuring position. 3. When stopping the measurement, pull down the clasp nut to clean the probe or just wipe the probe with soft cloth.
Chapter 5 _______________________________________________________ Taking measurements CHAPTER 5 TAKING MEASUREMENTS See Chapter 3 Preparations before use if you start the MM70 first time, otherwise follow instructions below. CAUTION 1. Connect the probe to MI70-indicator. 2. Press 3. Install the probe to the measuring position. If measuring in pressurized processes, see the instructions on page 10. 4. The basic display opens, let the reading stabilize. POWER ON/OFF button.
User's Guide _______________________________________________________________________ CHAPTER 6 BUTTONS, DISPLAYS AND MENUS Buttons and navigation To open a menu view 1. Press an arrow button 2. Press this shortcut button Shortcut buttons Arrow buttons Power ON/OFF Press down the POWER ON/OFF button until the indicator turns on/off. Press the SHORTCUT buttons to activate the function shown above the button. Press any of the ARROW buttons to open the MENUS.
Chapter 6 __________________________________________________ Buttons, displays and menus Basic display 5 1 2 3 4 1. Selected quantities. Up to three of the quantities can be selected at a time. - aw : water activity T temperature (°C/°F) H2O: moistured oil/ dry oil volume (ppm) 2. Shortcut button Graphic1 changes display into curve mode 3. Shortcut button Hold/Sa1 freezes display and you may save the reading into the memory. 4. Shortcut button Record1 takes you to the Recording/Viewing menu. 5.
User's Guide _______________________________________________________________________ Menus In the menus you can change settings and select the functions. 1. 2. 3. 4. 5. 6. Open the main menu by pressing any of the buttons. Press OPEN within 5 seconds. The basic display returns if you do not open the MENU shortly. If this happens, begin with the item 1 again. Move in the menus by using buttons. Select the item with buttom. Press to return to the earlier level. EXIT returns back to normal operation. .
Chapter 7 ___________________________________________________________________ Settings CHAPTER 7 SETTINGS PPM-calculation In case you have a device with a ppm-output the ppm-value is available as one of the quantities. The calculation model is based on the average water solubility behaviour of transformer oils, as follows: ppm = aw × 10 (A/(T+273.
User's Guide _______________________________________________________________________ Feeding the coefficients to the MI70 memory You can save in the memory specific coefficients for 4 different oils. As shipped from factory the average coefficients are set for the number 1 type (H2Ooil: 1). Add your own coefficients as follows: 1. Open the MENU; press 2. Select SETTINGS and press 3. Select MEASUREMENT SETTINGS and press 4.
Chapter 7 ___________________________________________________________________ Settings Display settings → Quantities and units All the quantities and units are shown in page 6. 1. Open the MENU; press 2. Select Display, press OPEN. . 3. Select Quantities and units, press 4. To select a quantity, move on the quantity you want by using the arrow buttons, press SELECT. 5. To change the unit, move on the quantity you want by using the arrow buttons, then press UNIT . 6.
User's Guide _______________________________________________________________________ Hold/Save display Hold/Save function enables you to freeze a certain display reading. This reading can be saved into the memory. 1. Open MENU: press OPEN. 2. Select Display, press 3. Select Hold/Save display. 4. Press HOLD to freeze the display. The frozen measurement data is displayed. 5. Press SAVE to save the reading and display. CANCEL to return to the basic 6.
Chapter 7 ___________________________________________________________________ Settings 5. To get the curve of the other selected quantities, press NEXT. To get the curves of the all quantities, press NEXT until text ALL is shown instead of NEXT. Then press ALL. 6. To zoom in the curve, press the arrow button . To zoom out, press the button . To move the curve in horizontal directions, press the buttons . 7. Press BACK and EXIT to return to the basic display.
User's Guide _______________________________________________________________________ Automatic power OFF As shipped from factory, MM70 has a default setting which turns the power off automatically after 15 minutes of inactivity. This is to conserve the battery. In case you want to change the inactivity time setting to 5 or 30 minutes or turn off the automatic power off function, follow the instructions. 1. Open the MENU: press 2. Select Settings, press 3. Select User interface, press 4.
Chapter 7 ___________________________________________________________________ Settings Button click and backlight on button press 1. Open the MENU: press 2. Select Settings, press 3. Select User interface, press 4. To turn OFF or ON sound effect while pressing the buttons, select Key Click and press ON/OFF. 5. To turn OFF and ON backlight while pressing the buttons, select Backlight on key press ON/OFF. 6. Press EXIT OPEN. . . to return to the basic display.
User's Guide _______________________________________________________________________ Device information → The basic information about the indicator and the probe is found as follows: 1. Open the MENU: press 2. Select Settings, press 3. Select Device information, press 4. The first display gives the information on the MI70 indicator. Press MORE to get the information on the probe. Press OK and EXIT to return to the basic display. OPEN . SHOW.
Chapter 8 _____________________________________________________________ Recording data CHAPTER 8 RECORDING DATA Recording → You can record measurement data and view the recorded data on the display. 1. Press the shortcut Recording/Viewing). 2. Select Record data, press 3. To change interval, select Interval, press 4. Select the measurement interval with arrow buttons. Measurement intervals and the maximum recording times are shown in the table below.
User's Guide _______________________________________________________________________ 5. Press 6. To set the recording duration, select Duration, press 7. Select the recording duration (1 min, 5 min, 15 min, 30 min, 1 h, 3 h, 12 h, 24 h, 7 d, 30 d, memory full) with arrow buttons and press SELECT. SET. SELECT. 8. Start recording: select Start/Stop recording, press START. If you chose 'Memory full', you see the maximum recording time on the display.
Chapter 8 _____________________________________________________________ Recording data 4. Select the file you want to view, press . The files are identified according to the starting date and time of recording. 5. Press GRAPH to get the graphical view, press TIMES to get the recording timestamps (press VALUES to go back the recorded values). 6. Press EXIT to return to the basic display. Checking the memory status You can check how much there is free space in the memory. 1. Open the MENU: press 2.
User's Guide _______________________________________________________________________ MI70 Link program to transfer recorded data to PC The recorded data can be transferred to a PC by using MI70 Link program. MI70 Link program can be ordered from Vaisala, see list of accessories on page 54. You can examine the recorded data easily in Windowsâ environment and transfer it further to a spreadsheet program (such as Microsoft Excel) to be modified.
Chapter 9 _____________________________________________________________ Other functions CHAPTER 9 OTHER FUNCTIONS Setting the alarm levels → MM70 is alarming by beeping and blinking the backlight. The alarm turns on when the measured value is not between the alarm limits (permissable area). Alarm level(s) can be set for only one quantity at a time. Set the alarm levels as follows: 1. Open the MENU: press 2. Select Functions, press 3. Select Alarm, press 4. Select Quantity and press 5.
User's Guide _______________________________________________________________________ NOTE 8. Select Alarm ON/OFF, press to the basic display. ON to activate the alarm and return back 9. A note picture sign 10. When the alarm level is reached, you can stop alarming by pressing OK. To reactivate the alarm function, answer YES. To stop the alarm function completely, answer NO. appears on the upper left corner. The alarm is not in function when the device is turned off.
Chapter 9 _____________________________________________________________ Other functions 6. Select Quantity, press SELECT. (One quantity can be chosen at a time. Only active quantities can be selected. To change the quantities, go to MENU→ Display→ Quantities and units). 7. Select 0.0 V to set the value for the 0.0V output signal, press SET. (If the analog output is ON, take it OFF) Set the low value by using arrow buttons. Press +/- button to choose the sign of the value. Press OK to make the setting.
User's Guide _______________________________________________________________________ CHAPTER 10 CALIBRATION AND ADJUSTMENT OF TRANSMITTERS MM70 in checking and adjusting Vaisala's HMP228 and MMT318 series transmitters can be calibrated and adjusted by using MM70. − in the field; check and adjust a fixed transmitter's reading against MM70's calibrated reference probe. − one or two point calibrations and adjustments can be done by using a MI70 indicator and Vaisala's humidity calibrator HMK15.
Chapter 10 _______________________________________Calibration and adjustment of transmitters Calibration and adjustment of HMP228 series transmitters You are able to check all the parameters aw, T and RH but only RH can be adjusted. You can calibrate your transmitter against a calibrated reference probe of MM70 or against a calibrator's reference humidity by using MI70 indicator in communication. Follow the first 12 steps and continue according to the chosen calibration method. 1.
User's Guide _______________________________________________________________________ Relative humidity adjustment by using a calibrated reference probe Follow the steps from 1 to 12 and continue as follows: 13. Ensure that the probes are located in the same conditions. 14. Wait until the readings have stabilized. If the difference between the humidity readings is less than 2 % RH, there is no immediate need for adjustment. 15.
Chapter 10 _______________________________________Calibration and adjustment of transmitters 16. Wait until the reading is stabilized (takes about 30 minutes). You can follow the stabilization from the GRAPH display. 17. Press READY when the value is stabilized in the reference humidity. 18. Enter the correct humidity value by using the arrow buttons. Press OK. 19. Confirm by pressing 20. Press BACK, EXIT, YES EXIT to return to the basic display.
User's Guide _______________________________________________________________________ 24. Press BACK, EXIT, EXIT to return to the basic display. Checking and adjusting the MMT318 transmitters You can check and adjust MMT318 transmitter reading against a calibrated reference probe of MMP78 or against another reference condition by using MI70 indicator in communication. Follow the first 4 steps and continue according to the chosen calibration method. 1.
Chapter 10 _______________________________________Calibration and adjustment of transmitters 6. Check that the probes are located in equal conditions and wait until the readings are stabilized (can take 30 minutes or more). If you are near the probes, do not breathe towards them. 7. Press 8. Press To same as.., press SELECT. (MI70 recognizes always the port to which the MMP70-series probe is connected). 9. Confirm by pressing 10. Adjustment is done. Press display. 11.
User's Guide _______________________________________________________________________ 2-point adjustment by using a calibrator If you use humidity calibrator HMK15, please use the adapter fitting (13.5 mm) on the measurement hole. Follow the steps from 1 to 4 and continue as follows: 5. Select the quantity press 6. Remove the filter from the transmitter's probe and insert the probe head into the first reference condition. 7. Press 8. Select 2-point adjustment, press 9.
Chapter 11 _____________________________________ measuring other parameters simultaneously CHAPTER 11 MEASURING OTHER PARAMETERS SIMULTANEOUSLY The MI70 indicator is a generic indicator that can be used with Vaisala interchangeable humidity (HMP), dewpoint (DMP) and carbon dioxide (GMP) probes. Two different probes can be used simultaneously. 1. Turn off the device. 2. Connect the DMP70/GMP70/HMP70 probe to the other connector port in the bottom of the indicator. 3. Turn on the device. 4.
User's Guide _______________________________________________________________________ CHAPTER 12 CALIBRATION AND ADJUSTMENT OF MM70 SERIES PROBES General about calibrations The MM70 is fully calibrated as shipped from factory. Adjustment shall be done if there is a reason to believe that device is not within the accuracy specifications. The recommended calibration interval is one yar.
Chapter 12 ________________________________ Calibration and adjustment of MM70 series probes When using Vaisala humidity calibrator HMK15, use the adapter fitting (13.5 mm hole). Before starting the adjustment mode, take out the screw covering the calibration button. Calibration button (under the screw) Relative humidity adjustment LiCl-NaCl automatic adjustment LiCl-NaCl automatic adjustment is a two-point adjustment in reference humidities of 11.3 % (LiCl) and 75 % (NaCl).
User's Guide _______________________________________________________________________ 1. When adjusting both relative humidity and temperature, please make the temperature adjustment first. 2. Check that the MM70 is switched on. 3. Take out the screw from the probe handle to expose the calibration button. Press the button with a small screwdriver. When pressing the button, indicator turns to adjusting mode. 4. Press 5. Select RH, press 6.
Chapter 12 ________________________________ Calibration and adjustment of MM70 series probes 1-point adjustment Usually it is recommended to make an adjustment in two reference humidities. If adjustment is done by using one reference humidity (1-point adjustment), select the reference humidity so that it represents the measuring environment.
User's Guide _______________________________________________________________________ 2-point adjustment Follow the steps from 1 to 4 and continue as follows: 5. Select 2-point adjustment. Press 6. Set the probe to a lower reference temperature. You can follow the stabilization from the GRAPH display. 7. Press READY when the reading is stabilized. Give the lower reference temperature by using the arrow buttons. Press OK. 8. Set the probe to the higher reference temperature.
Chapter 13 ___________________________________________________________ Error messages CHAPTER 13 ERROR MESSAGES If MM70 displays an error message, check first that the sensor is connected properly and let the probe dry if there is condensed water in the probe. In case of constant error, please contact Vaisala Service Center (see page 50).
User's Guide _______________________________________________________________________ CHAPTER 14 MAINTENANCE Changing the filter and sensor Plastic socket 1. Screw out the filter from the probe head (figure on page 7). 2. Remove the damaged sensor by pulling it out. Handle the sensor by the plastic socket. 3. Insert a new sensor. 4. Make a humidity calibration. 5. Screw a new filter on the probe head, take care to tighten the filter properly (5.1 Nm).
Chapter 14 ______________________________________________________________ Maintenance Changing the battery pack A new rechargeable battery pack can be ordered from Vaisala. Change the battery pack as follows: 1. Open the back plate of the indicator by opening the screw of the back plate. 2. Remove the old battery pack. Detach the black connector by pulling up carefully from the wires. 3.
User's Guide _______________________________________________________________________ Vaisala Service Centres NORTH AMERICAN SERVICE CENTER Vaisala Inc., 100 Commerce Way, Woburn, MA 01801-1068, USA. Phone: +1 781 933 4500, Fax +1 781 933 8029 Email: us-customersupport@vaisala.com EUROPEAN SERVICE CENTER Vaisala Instruments Service, Vanha Nurmijärventie 21 FIN-01670 Vantaa, FINLAND. Phone: +358 9 8949 2758, Fax +358 9 8949 2295 E-mail: instruments.service@vaisala.
Chapter 15 _____________________________________________________ Technical Specifications CHAPTER 15 TECHNICAL SPECIFICATIONS Measured variables Water activity aw Measurement range 0...1 (@-40...+60 °C/ -40...+140 °F) Accuracy (including nonlinearity and repeatability) When calibrated against salt solutions (ASTM E104-85): ±0.02 (0...0.9) ±0.03 (0.9...1.0) When calibrated against high-quality, certified humidity standards: ±0.01 (0...0.9) ±0.02 (0.9...1.
User's Guide _______________________________________________________________________ MMP78 Probe Humidity sensor Temperature sensor Operating temperature range for electronics HUMICAPâ Pt100 IEC751 1/3 class B -40...+60 °C, -40...+140 °F Operation pressure range 0...
Chapter 15 _____________________________________________________ Technical Specifications Data logging capacity Logging interval Logging duration 900...2700 real time data points, 1 s to 12 h 1 min ...
User's Guide _______________________________________________________________________ Options and Accessories Description AC-Adapters Euro AC-adapter UK AC-adapter US AC-adapter AUS AC-adapter Cables Analog output signal cable Connection cable for MMT318 Connection cable for HMP228 Extension cable (10 m) Carrying case Carrying case for two probes (MMP78; DMP74A/B) Probe accessories Stainless steel filter Protective cap Others Measurement indicator Manual press tool Plastic wrench Calibration adapter for HMK
Chapter 15 _____________________________________________________ Technical Specifications 190 (7.48) Dimensions in mm (inches) 340 (13.39) Adjustment range 250mm 170 (6.69) 13.5 (0.53) 12 (0.
