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AT-G-DETECT

 

Gas Sensing System

LEAK DETECTION SOLUTIONS

2

B. TRICAL RESET / BUMP TEST (EVERY YEAR)

Electrical reset is based on the calibration found on the label on the side of the enclosure and is 
unique to that sensor.

TOOLS REQUIRED

•  A voltmeter – crocodile clips recommended
• Aquilar’s set point values, as shown on the rating label
• Estimate 10 minutes per sensor

C. ELECTRICAL RESET OF 1 LEVEL SYSTEM

Reset, if necessary, the Standby and Alarm 
Threshold Voltage to the factory settings as 
shown on the calibration label.

First disable the 3 minute alarm delay on a 
one level system by moving the jumper link 
at JP1 to the “OFF” position, diagram 1.
Two adjustments are required and they are 
all performed on the controller unit.
For Sensor Standby Voltage, connect your 
DC voltmeter between 4(0V) and 2(+V) on 
CN1, CN2, etc as shown in Diagram 1 and 
adjusting pot P1 for channel 1, P2 for channel 
2, etc.For Alarm Threshold Voltage, connect 
your DC voltmeter between 4(0V) and 1(+V) 
on cal header as shown in Diagram 1 and 
adjusting pot P3 for 1/2channel units and P7 

for 4/6 channel units. For CO2 1 Level units 
there is only one adjustment - the alarm 
level, as the SSV is 

fi

 xed. This can be adjusted 

by connecting your DC voltmeter between 
4(0V) and 1(+V) on cal header as shown 
in Diagram 1 and adjusting pot P3 for 1/2 
channel units and P7 for 4/6 channel units.
Carry out a bump test to ensure the sensor is 
functioning correctly. If the sensor 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 label and sensor PCB and 
contact Aquilar for the appropriate set point 
values. Finally return the jumper JP1 to the 
original position.

C. ELECTRICAL RESET OF 2 LEVEL SYSTEM

Reset, if necessary, the Standby and low /
high Alarm Threshold Voltages to the factory 
settings as shown on the calibration label.

For Standby voltage, connect your DC 
voltmeter between TP5 (0V) and TP4 (+V) as 
shown in Diagram 2 and adjusting pot RV1.
For low-level alarm voltage, connect your DC 
voltmeter between TP5 (0V) and TP2 (+V) as 
shown in Diagram 2 and adjusting pot P8.
For high-level alarm voltage, connect your DC 
voltmeter between TP5 (0V)and TP1 (+V) as 
shown in Diagram 2 and adjusting pot P7.
For CO2 2 level units there are 2 adjustments 
for the alarm levels, again the SSV is 

fi

 xed 

and these can be found on the controller. 
They can be adjusted by connecting your DC 

voltmeter to the cal header between 4(0V) 
and 2(+V) low alarm and adjusting P8 and for 
high alarm between 4(0V) and 1(+V) adjusting 
P7. If the sensor does not go into alarm 
exchange the sensor and 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 label and sensor PCB 
and contact Aquilar for the appropriate set 
point values.

Unit 30, Lawson Hunt Industrial Park, 

Broadbridge Heath, Horsham, West Sussex, 

RH12 3JR
+44 (0) 1403 216100
[email protected]
www.aquilar.co.uk

Содержание AquiTron AT-G-DETECT

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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