© 2021 All rights reserved. Data subject to change without notice.
35
Rev. E | 2021.03
LPT - Operation Manual
Step 6
:
Attach regulator to cylinder of span gas.
Step 7
:
Insert the calibration adapter into the sensor opening in the front of the enclosure door.
Step 8
:
Open regulator valve fully and allow span gas to fl ow over sensor.
If no gas is detected after one minute, the transmitter returns to normal operation and the
procedure will need to be performed from Step 2.
Step 9
:
Once gas fl ow is detected, the internal LED pattern will change to fl ash four times and then pause
with the LED on. During this time the current loop will follow the gas level based on the ideal span
of the sensor.
The spanning can be cancelled by removing the Jumper-2 from the CAL position and move to IDLE
position before the spanning is fi nished and the transmitter will return to normal operation (solid
green light on the front).
Step 10
:
After the span is completed and passed, the transmitter will return to normal operation.
If the span is out of range but within the override range, the LED will fl ash as it did for zero override
range. To override, move the concentration jumper to the OVER position. If Jumper-1 is not moved
to the OVER position in 30 seconds, the current loop will output 20 mA and will stay there until you
move the Jumper. After using the OVER position, Jumper-1 should be returned to the gas selection
position (GAS1, GAS2 or GAS3).
