65-2670XL-XX-07 M2A-XL Transmitter
Chapter 4: Operation
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Chapter 4: Operation
Overview
This chapter describes the M2A-XL in normal operation. This chapter also describes the M2A-
XL in alarm 1, alarm 2, and fail conditions and suggests responses to these conditions.
Normal Operation
Normal operation is defined as follows:
• The start-up procedure is complete.
• The M2A-XL is not indicating an alarm 1, alarm 2, or fail condition.
• The M2A-XL is not in Calibration, Configuration, or Gas Type modes.
During normal operation, the M2A-XL simultaneously displays the current gas reading, unit of
measure, and target gas.
Information Screen
The Information Screen displays the M2A-XL’s operating voltage and firmware and hardware
information. To display the Information Screen, do the following:
1. Press and hold the DOWN/NO button for 3 seconds. The Information Screen will appear.
2. Continue holding the DOWN/NO button to keep the Information Screen on the display. The
top line indicates the operating voltage that is connected to the M2A-XL. The second line
indicates the firmware that is running, version 5.0 in this example, and the M2A-XL’s
hardware version, version 2A in this example. This information may be useful if you need to
contact the factory with questions about the M2A-XL.
3. Release the DOWN/NO button when you are done viewing the Information Screen. The
display will return to the normal operation screen within a couple of seconds.
NH3
0 ppm
24.2V
v5.0L 2A
