Critical Environment Technologies LPT-M, Руководство по эксплуатации

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LPT-M - Operation Manual Rev. B | 2020.11
When fi nished, press ENTER to accept and Exit the screen. The gas level reading for that channel will
be immediately sent to the controller. This test reading will override any actual gas reading for that
channel for the duration of the test.
To stop the test, press ENTER to Exit. If you do not exit the test, the test will 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 confi gurable 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 Confi guration Menu (passcode 3032), press either ARROW key to scroll through the
menu and select the channel for which you are setting the alarm setpoint.