Part Number: 1460105
REV: A
Once the fault is cleared the SEC 3100 will atomatically resume normal operation.
Flash
Rate
Output Current
Unit Status
Label
Possible Problem
1
4-20ma
Unit Running
Unit is measuring gas and adjusting 4-20ma output accordingly.
2
2.2ma
Unit Zero Calibrating
Unit going through its
zero
calibration
procedure.
3
2.0ma
Unit Spanning
Unit going through its
spanning
procedure.
5
0.8ma
Unit Warm-up
Only for one minute after unit power-up
6
0.0ma
Power-up Fault
Hard Fault (refer to gas sensor manual)
7
1.6ma
Calibration Fault
1.
Attempt
Unit Span
with no gas
2.
Attempt
Unit Zero
with gas
8
NA
NA
Currently Not Used
9
0.0ma
Unit Fault
Hard Fault (refer to gas sensor manual)
10
1.0ma
Optics Fault
Clean sensor’s windows
11
1.2ma
Zero Drift Fault
Hard Fault (refer to gas sensor manual)
12
0.0ma
Configuration Fault
Hard Fault (refer to gas sensor manual)
16
0.2ma
Reference Channel Fault
Hard Fault (refer to gas sensor manual)
17
0.4ma
Active Channel Fault
Hard Fault or
Unit Zero
with gas
IV. MAGNETIC SWITCH OPERATION
The SEC 3100 has three (3) magnetic switch pickups on the Display PCB. The picture below shows the
location of the magnetic switches labeled UP, DOWN and ENTER. Placing a magnet in close proximity to
one of the switches will cause the following operations to occur.
