65-2640XL-04 M2A Transmitter Operator’s Manual
Chapter 6: Gas Type Mode
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Chapter 6: Gas Type Mode
Overview
This chapter describes how to use Gas Type Mode to select the M2A’s gas type. The gas type
determines the target gas and detection range.
CAUTION:
The target gas is factory set and does not normally need to be changed. The
standard setting for the 65-2640XL-04 is methane, but it may be different depending
on the calibration.
Gas Type Mode includes a 5-minute time-out feature. If you do not press a button for 5 minutes,
the M2A automatically returns to normal operation.
NOTE:
If the M2A enters normal operation because of a program time-out, it enters a warm-up
period just as it does when it is first turned on.
Selecting the Gas Type
1. While in normal operation or during the warm-up sequence, press and hold the UP/YES and
DOWN/NO buttons for five seconds. Release them when the following screen appears.
2. If you want to exit Gas Type Mode, press and release the DOWN/NO button. The display will
indicate
NO CHANGE
and the M2A will return to normal operation.
If you want to continue in Gas Type Mode, press and release the UP/YES button. The top
display line will indicate
GasType?
and the bottom display line will indicate the target gas
choice.
3. Use the UP/YES or DOWN/NO button to scroll through the choices of target gas. Table 6
below lists the choices of target gas for the M2A.
Table 6: Gas Types
Gas Type
Choices
Detection Range
HC
0 - 100% LEL
iBUTANE
0 - 100% LEL
PROPANE
0 - 100% LEL
HEXANE
0 - 100% LEL
Select
GasType?
