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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
Reg.
Value
Current Output
(mA)
Status LED
Meaning
Red
Green
0
4 – 20
Slow Flash
(Gas found)
Flash
(No Gas)
Normal Sensor operation – regularly calculates
gas concentration.
1
3.0
Solid
Sensor is zeroing itself ( Cal Mode)
2
3.3
Very Fast
Flash
Sensor is waiting until it detects application of
cal gas.
3
3.3
Very Fast
Flash
Sensor waits until gas level stabilizes, then
begins spanning.
4
3.6
Solid
Spanning is complete, user asked to remove gas.
5
3.6
Solid
Displayed for 4 seconds once gas decreases to
3% FS after user asked to remove cal gas.
6
2.5
Very Fast
Flash
Sensor is not calibrated, requires user to
calibrate.
7
3.0
Slow Flash
Sensor is waiting for 90 seconds to allow the
signal to stabilize ( Start Delay)
9
3.0/3.3
Solid
Solid
Signal was too unstable to acquire accurate zero
after 90 seconds
10
3.0/3.3
Solid
Solid
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
11
4 – 20
Fast Flash
See Event Log in transmitter main menu.
12
4 – 20
Fast Flash
See Event Log in transmitter main menu.
13
2.5
Fast Flash
FAULT DETECTED: Input voltage <8V.
14
2.5
Fast Flash
FAULT DETECTED: Input voltage >33V.