background image

AT-G-DETECT

Refrigerant Gas Sensing System
Check / Calibration Procedure

AquiTron

C A L I B R A T I O N 

P R O C E D U R E

Summary of Contents for AquiTron AT-G-DETECT

Page 1: ...AT G DETECT Refrigerant Gas Sensing System Check Calibration Procedure AquiTron CA L I B R AT I O N P R O C E D U R E...

Page 2: ...ective is to establish if the sensor is reacting to the gas and all the sensor outputs are working correctly A quantified bump test is one where gas of a know concentration is used CALIBRATION This co...

Page 3: ...r does not go into alarm carry out a gas calibration If the factory set point information is not on the calibration label as with older units check the serial number of your gas detector on the rating...

Page 4: ...OULES 1 Make sure that both the ampoules and the calibration beaker are clean and dry 2 Unscrew the beaker hold screw and place the ampoule so that it sits in the base of the beaker 3 Tighten on the s...

Page 5: ...o the controller to monitor sensor response Expose the sensor to gas from the cylinder You can place the entire sensor into a plastic bag or use a plastic hose hood to direct gas to the sensor head G...

Page 6: ...3 minute alarm delay on a one level system by moving the jumper link at JP1 to the o position Two adjustments are required and they are all performed on the controller unit A Sensor Standby Voltage S...

Page 7: ...used drift B Alarm Threshold Voltage ATV Low Treshhold Connect voltmeter between TP5 0V TP2 Ve set the voltage asshown on the calibration label by adjusting pot P8 High Threshold Connect voltmeter bet...

Page 8: ...r extreme humidity or temperature conditions you may adjust the settings to compensate One Level Systems You should reduce the SSV level in 0 5V increments until the condition clears Two Level Systems...

Page 9: ...libration label You can monitor this as follows 1 level systems Connect a Voltmeter and monitor voltage between Pins 4 Ve 2 Ve of the sensor terminal connector block for each channel in turn CN1 CN2 E...

Reviews: