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 30 of 62
Copyright © 2015 Analox Ltd. All Rights Reserved.
Commercial in Confidence
5] Carefully open the regulator valve and allow the 1.6% CO2 gas to flow across the sensor. Do
not block the exit of the flow adaptor.
6] Ensure that the Ax60+/Ax60+ Kiosk low alarm (1.5% CO2) operates.
7] Close the regulator valve, acknowledge the alarm and ventilate the area.
8] Repeat the procedure using 3.2% CO2 gas to check the high alarm (3% CO2).
6.2 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
Contact Analox or source locally 110-litre 100% nitrogen (zero gas)
Contact Analox or source locally 110-litre 3% carbon dioxide, balance nitrogen (span gas)
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. The recalibration procedure is
the same for both the standard Ax60+ and the Ax60+ Kiosk. However, before you adjust the Ax60+ Kiosk you must
temporarily fit the portable calibration unit, part number AX60CNQNXA (see section 10 for further details).
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.
6.2.1 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+/Ax60+ Kiosk 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).
7] Fit the flow adaptor into the aperture on the CO2 Sensor.
8] Fit the regulator to the 100% nitrogen zero gas .
9] Carefully open the regulator valve and allow the zero gas to flow across the sensor for 1 to 2
minutes. Do not block the exit of the flow adaptor.