Rki-instruments M2A Manuel d'utilisateur Page 42
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37 M2A Transmitter Operator’s Manual
Chapter 7: Maintenance
Overview
This chapter describes procedures for performing preventive maintenance, troubleshooting,
calibrating the M2A, and replacing field replaceable parts. It includes separate procedures for
calibrating the combustible gas/CO
2
/toxic and oxygen versions of the M2A.
Preventive Maintenance
This section describes a recommended preventive maintenance schedule to ensure the optimum
performance of the M2A. It includes daily, monthly, quarterly, and biannual procedures.
Daily
Verify a display reading of zero (20.9% for an oxygen M2A). Investigate significant changes in the
reading.
Monthly
This procedure describes a test to verify that the M2A responds properly to the target gas.
NOTE: Performing a response test on the M2A may cause alarms. If you do not want external
alarms to actuate, disable any external alarms during the response test to avoid
unwanted external alarm indications.
NOTE: The following procedure assumes the use of a calibration kit which includes a
calibration gas cylinder, a fixed flow regulator with an on/off knob, a calibration cup for
the detector, and a short piece of sample tubing to connect the regulator to the
calibration cup.
1. Disable all external alarms if external alarm indications are not desired during the response
test.
2. Connect the calibration kit sample tubing to the calibration cup hose barb.
3. Screw the calibration cup onto the detector.
NOTE: For an ESM-01 detector, you must unscrew the removable splashguard from the
detector housing cap so you can push the appropriate calibration cup onto the ESM-01
sensor. Make sure to use the correct calibration cup for the sensor being used. There is a
Cl
2
type calibration cup for a Cl
2
sensor, an NH
3
type calibration cup for an NH
3
sensor, and a general type (usually labeled SO
2
) calibration cup for all other ESM-01
sensors.
4. Connect the fixed flow regulator to the calibration cup using the sample tubing.
- M2A Transmitter 1
- Operator’s Manual 1
- Product Warranty 3
- Table of Contents 4
- Chapter 1: Introduction 6
- Specifications 7
- Chapter 2: Description 9
- Magnetic Wand 10
- Gas Detector 10
- Figure 6: 65-2423RK-05 H 13
- S Detector, CSA 13
- Hydrophobic 14
- Membrane 14
- Internal Description 15
- Control PCB 17
- Overview 19
- Mounting the M2A Transmitter 19
- Wiring the M2A Transmitter 23
- 2,500 ft. 5,000 ft. 8,000 ft 27
- Start Up 28
- Chapter 4: Operation 31
- Alarm Indications 33
- Alarm 2 Condition 34
- Fail Condition 34
- Low Power Alarm 35
- Chapter 5: Configuration Mode 36
- Parameter 37
- (Factory Set Value) 37
- Description 37
- Chapter 6: Gas Type Mode 39
- Chapter 7: Maintenance 42
- Quarterly 43
- Biannually 43
- Troubleshooting 44
- Calibration Frequency 46
- , and Toxic Versions 47
- Non-Intrusive Calibration 48
- Adjusting the Span Setting 49
- Calibration, Oxygen Version 50
- Adjusting the Zero Setting 51
- Replacing the Gas Detector 52
- Replacing the CO or H 53
- S Plug-in Sensor 53
- Recommended Modbus Wiring 57
- Termination Jumper 58
- Modbus Mode 59
- Supported Modbus Functions 62
- Parts List 66
- Part Number Description 67
- [15:2] Unused 74
- Register 20 75
- Register 21 75
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