RKI Instruments M2 for 12 VDC - Manual (Page 25)

M2 Transmitter Operator’s Manual, 12 VDC Operation 20
Chapter 6: Gas Type Mode
Overview
This chapter describes how to use the Gas Type Mode to select the M2’s gas type. The gas
type determines the target gas and detection range.
The Gas Type Mode includes a 5-minute time-out feature. If you do not press a button for
5 minutes, the M2 automatically returns to normal operation.
NOTE: If the M2 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 M2 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 DOWN/NO button to scroll through the choices of target gas. Table 6 below
lists the choices of target gas for the M2.
4. When the desired target gas is on the display, press and release the UP/YES button.
The display will ask SAVE IT? YES/NO.
Table 6: M2 Gas Types
M2 type
Gas Type
Choices
Detection Range
LEL
METHANE
0 - 100% LEL for all
gas types.
HYDROGEN
HEXANE
HC
Select
GasType?