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MAN-0076 Rev 05 Millennium II
December 07, 2012
Net Safety Monitoring Inc
Sensor Status Registers, Transmitter Status LED, Current output and Meaning
Table 6 below, shows the sensor status registers, and the transmitter’s current output, along with corresponding status
LED and meaning.
Note: To differentiate between conditions resulting in 2.5 mA, view the Event Log. See Event Log menu option.
Table 6: Current output and meaning
Normal Sensor operation – regularly calculates
gas concentration.
Sensor is zeroing itself ( Cal Mode)
Sensor is waiting until it detects application of
cal gas.
Sensor waits until gas level stabilizes, then
begins spanning.
Spanning is complete, user asked to remove gas.
Displayed for 4 seconds once gas decreases to
3% FS after user asked to remove cal gas.
Sensor is not calibrated, requires user to
calibrate.
Sensor is waiting for 90 seconds to allow the
signal to stabilize ( Start Delay)
Signal was too unstable to acquire accurate zero
after 90 seconds
Displayed for 4 seconds is the cal gas was
removed prematurely OR is a 90 second time
limit has elapsed and the signal was too
unstable to acquire accurate data
See Event Log in transmitter main menu.
See Event Log in transmitter main menu.
FAULT DETECTED: Input voltage <8V.
FAULT DETECTED: Input voltage >33V.
