Overview of Normal Operation
Operation • 13
3.4.5. Conclusion
After all wiring is completed, power the transmitter and confirm operation, and then
prepare to seal the enclosure.
Align the enclosure gasket (primary transmitter and remote sensor if equipped),
replace the lid, and tighten the six (6) screws. Tightening torque should be limited to
tightening by hand, and should be uniform in pattern.
4
Operation
4.1. Overview of Normal Operation
CAUTION! Before leaving the instrument for normal operation, check the configuration
for proper settings and check calibration.
4.1.1. Applying Power and the Start-up Sequence
After applying power, the instrument will go through a start-up sequence
(initialization, audible/visual test and self-test sequence). After the start-up sequence
completes, the instrument will enter a warm-up period to allow the sensor element
to stabilize before reporting a valid output.
Table 4-1
- Instrument Start-up Sequence
Step
Description
1
Switch power on.
2
Observe start-up sequence and warm-up phase:
• Green LED will blink at 0.5 Hz for about five (5) minutes
• Modbus flag for warm-up is set
• Buzzer is off
• Relay state is “no alarm”
• Gas reading invalid
3
Observe normal operation:
• Green LED is steady on
• Modbus flag for warm-up is cleared
• Buzzer is off
• Relay state is “no alarm”
• Gas reading valid
