INSTRUCTION MANUAL GAS-CHECK SF6 AN INSTRUMENT FOR THE LOCATION AND MEASUREMENT OF LEAKS IN SF6 FILLED ELECTRICAL SWITCHGEAR. User Manual iss 01 Software-Version V1.
Contents: Software version V1.39BB Subject 3.0 3.1 Description General Safety Page 2 2 4.0 4.1 System Properties/introduction Console controls 3 3 5.0 5.1 5.2 6.0 6.1 6.2 Handgun displays and controls Handgun analogue display Handgun display LED’s Handgun buttons Top Caps Filters 4 4 4 5 5 5 7.0 7.1 7.2 7.3 7.4 7.3 Getting started Measuring operation Possible fault conditions during operation Low flow error Flare stall Low battery voltage 6 6 6 7 7 7 7.5 Switching OFF 7 8.0 8.1 8.
12.0 12.1 12.2 12.3 User setup Peak hold (gauge) Peakhold (screen) Display units 12 12 12 12 13.0 13.1 13.2 Desen Factor 1 Desen Factor 2 Standby mode 13 13 13 14.0 14.1 14.2 14.3 14.4 14.5 14.6 Standby delay RS232 Protocol Sound type Sound begins at Live tick Filter threashold Filter count 13 13 14 14 14 14 14 15.0 15.1 Tech data readout Probe/Sensor/Filter life 14 15 15.2 Changing the Probe 15 16.0 16.1 16.2 16.3 Known problems. Power Up During Transport.
.0 SYSTEM PROPERTIES: Introduction: GAS-CHECK SF6 is a portable, mains-independent instrument for leak detection and leak measurement of SF6 gas. Although designed for SF6, other gases with a high affinity for electrons, such as refrigerant R12 may also be detected. Although designed for operation without training, we recommend that this manual be read before use. This manual and the instrument have been designed to be understood by users whose first language is not English.
.0 Handgun Displays and Controls: 50 60 7 30 40 08 20 09 0 % Al arm F F O 0 10 The following controls are found on the hand unit: 5.1 Analogue gauge: displays the response to leaks in %, rather than an absolute value (displayed on the touch-screen), and shows the leak rate in the form of a percentage of the alarm value. This is clearer and easier for an operator. 5.2 Handgun Six LEDs indicate status. COLOUR No DESCRIPTION Green 1 Red 2 Green 3 Yellow 4 SIGNAL.
.0 HANDGUN BUTTONS: SQUARE: This has two functions: MEASURE MODE and SEARCH (bar graph) MODE. On power-up the SEARCH mode is automatically selected, the touch screen displays a bar graph. This is ideal for fast and ultra low-level leak detection (~10 E-8cc/sec). In this mode high accuracy is not possible, just leak detection and location. When a leak is discovered, the audible alarm sounds and the bar graph as well as the handgun analogue gauge responds, usually full scale.
.0 GETTING STARTED: This assumes you have just received the instrument and it is NOT powered up. 1 Plug in the sensor and connect the handgun to the console. Align the red marks and press home. 2 Connect to a mains electrical supply AC 85-265V. An opening screen is now displayed which identifies the major components of the instrument. You will hear the vacuum system initialising and a valve operation. This is setting the required vacuum level. Approx.
7.3 LOW FLOW ERROR: The flow through the sensor is controlled by the vacuum pump. The level of vacuum required to maintain the required flow can be seen in the lower LH screen. Should the sample intake of the sensor be partially or totally blocked, the instrument will first try to compensate by increasing the vacuum. If unsuccessful, an error is reported. You have the choice to confirm one of the following instructions: TRY TO CONTINUE Instrument will try to resume normal operation.
8.1 USER SETUP: This paragraph describes the parameters that determine the behaviour of the instrument. The first step is always. Activating the Menu System. In normal operation, the instrument can be taken to programming mode by simply touching the touch-screen. From the main menus, items can be selected.
9.2 Data Printout If readings were stored using the STORE key on the hand unit, these can be printed or transferred to a computer. After printout, the data memory is cleared. See section 16.5 page 15 for ISL supplied printer settings and information. 9.3 Clear Data Memory Use this function prior to beginning a new set of measurements to remove invalid data from memory. Exit Press to return to normal screen display. 9.
10.2 Force Operator ID by key code If selected, a password (key code number) entry screen is opened after power up. The operator is now required to enter his personal key code. If nothing or an invalid key code is entered, data printout is not possible. A corresponding message must be confirmed before operation is allowed. Key codes can be assigned for 6 different operators, please refer to "Changing Passwords" section 10.4. 10.3 Access codes 10.
11.0 Calibration The GAS CHECK SF6 is unique in that completely separate values are stored for each of the display modes. This means that if you want to measure ppm or gm/yr these values must be calibrated before use. Calibration follows the same easy routine as with cc/sec calibration using the Portable Reference Leak. Regular calibration further improves the precision of measurement over the standard (factory set) calibration.
12.0 User set-up This gives access to a number of parameters which determine the behaviour of the instrument. They are described as follows and all are selected using the up/down arrows and changed using the -/+ buttons. 12.1 Peakhold (gauge). This due to the short recovery time after detecting a leak, this function is helpful. The peak value will be held on the handgun display for the time you select. In position OFF, no peak hold occurs. 12.
13.0 Desens Factor 1. Factory pre-set at x5. On a high or ‘gross’ leak, press the GREEN handgun pad once. This desensitises by x5; the Green (special) lamp will flash. 13.1 Desens Factor 2. Factory pre-set at x5. Pressing the GREEN handgun pad again invokes a further desensitise, the lamp will flash faster. To change the desens factor use the +/- buttons. 13.2 Standby mode This useful feature allows you to programme a standby (sleep) time from when the instrument is last used (or moved).
14.2 Sound type Using the +/- buttons select sound output you prefer. HARMONIC or TRADDITIONAL. If more than one instrument is used in a confined space, it may be useful to set them to different sound types. 14.3 Sound begins at This allows you to set the display value at which the sound begins. For leak detection, we suggest settings of 20.to.50%. If you use higher settings, leaks may be missed.
15.1 Probe/Sensor Lifetime/filter: Sensor life is presently estimated to be 200 hours of continuous use in a normal industrial atmosphere. Sensor life is affected only by contamination in the air sample being drawn through probe. Therefore it is dependent on ambient conditions. Filter: This is positioned between the top-cap and the sinter leading into the detector vacuum chamber. To access the filter, first switch off, then remove the probe and hold it upright.
16.4 Settings on despatch as found in User Setup Instrument serial Number P1 Peak Hold (gauge) Peak Hold (screen) Display Units Desen. Factor 1 Desen Factor 2 Standby Mode Standby Delay RS232 Protocol Sound Type Sound begins at Live tick Filter Threshold Filter Count Date 0.5 s AUX DISP E-6 ml/s 5x 10 x Light + sensor 15 min DTR/DSR HARMONIC 20% Alarm OFF 5 10 16.5 A Citizen dot matrix printer type iDP together with a mains transformer is supplied as an option.
