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LPT-M - Operation Manual
Rev. B | 2022.03
timeout after 5 minutes and return to normal operation. Repeat for each
channel you want to test.
6.11 Setting Channel Alarm Setpoints
The LPT-M is configurable as a one, two or three channel gas detector and
each channel has three gas alarm setpoints, LOW, MID and HIGH which can
be ascending or descending. The number entered as the setpoint is the exact
number at which the alarm will be triggered, unless a hysteresis value has
been set (refer to Section 6.11.4 Setting Hysteresis). The setpoint is the level
of the gas concentration at (and above which) the relay will be activated, the
buzzer will sound (if enabled) and the display will indicate an alarm condition (if
enabled). Almost all installations will use the factory default alarm setpoints.
NOTE:
If Channel 1 is not being set, follow the same steps using Channel 2 and/
or Channel 3.
6.11.1 LOW Alarm Setpoint
In the Sensor Configuration Menu (passcode 3032), press either ARROW key
to scroll through the menu and select the channel for which you are setting the
alarm setpoint.
Press ENTER and use the ARROW keys to scroll through the menu and choose
SP Low. Press ENTER and use the ARROW key to choose ASCENDING or
DESCENDING.
