ANALOX Ax60+ Multi-Gas, Руководство по обслуживанию

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Ax60+ Multi-Gas
Service Manual
Int. Approved
Document ref: P0159-803-11 September 2019 Page 20 of 62
Copyright © 2015 Analox Ltd. All Rights Reserved.
Commercial in Confidence
4] Fit the regulator to the CO2 low check gas bottle (see above, right).
5] Carefully open the regulator valve and allow the CO2 low check gas to flow across the sensor.
Do not block the exit of the flow adaptor.
6] Ensure that the Ax60+ display reading is between 400ppm and 550ppm
7] Close the regulator valve, acknowledge the alarm and ventilate the area.
8] Repeat the procedure using the CO2 high check gas bottle to check the display reading shows
between 30000
– 30150ppm CO2
5.2 CO
2
sensor calibration adjustment
The Ax60+ CO
2
Sensor(s) can be recalibrated to ensure they accurately measure carbon dioxide at the specified levels.
Analox can supply the following calibration kit:
Ax60+ CO
2
Calibration Kit comprising:
Part number Description Gas type
Contact Analox or source
locally 110-litre pure air (20.9% oxygen, balance nitrogen) CO2 Zero
Contact Analox or source
locally 110-litre 3% carbon dioxide, balance nitrogen CO2 Span
Contact Analox or source
locally 0.5-litre/minute regulator to fit 110-litre bottle
1817-5000 2-metre neoprene tubing
8000-0910A Push-in flow adaptor
Recalibrating CO
2
Sensors is a similar task to checking but it also requires software input.
Calibration adjustment is a two- point process: a ‘zero calibration adjustment’ and a ‘span calibration adjustment’.
NOTE: ZERO CALIBRATION ADJUSTMENT MUST BE PERFORMED BEFORE SPAN CALIBRATION
ADJUSTMENT.
5.2.1 CO
2
sensor zero calibration (Displayed as Zero cal.)
NOTE: THE SENSOR THAT IS BEING CALIBRATED IS AUTOMATICALLY DISABLED DURING
CALIBRATION. THE OTHER SENSORS CONTINUE TO OPERATE.
NOTE: CALIBRATION MODE AUTOMATICALLY TIMES OUT AFTER TEN MINUTES.
To zero calibrate a CO
2
Sensor, follow the procedure below (in both text and menu map):
1] Ensure the Ax60+ is powered on and operating normally.
2] Press and hold Cycle for 6 seconds to display Top-level Menu.
3] Press Cycle four times to display Calibration. Press Accept/Test to display Zero cal.
4] Press Accept/Test to show the Select sensor screen, press Cycle to select the Sensor you want
to calibrate.
5] Press Accept/Test to select the Sensor. The Zero level (#) screen displays.
6] Fit the neoprene tubing (1817-5000) to the flow adaptor (8000-
0910A).