Oldham iTrans 2

64
Symptom
Problem
Solution
ground.
“U Or” appears on the
display
4-20 mA signal goes
into over range for
about 5 seconds
before settling at
1mA
Ensure the sensor is working
properly via a second ary gas
detection source and the 4-20
mA is scaled correctly.
Table 8-1 Common Problems
Fault Codes
Fault
Display
Status Bit
4-20 mA Output
Description
0.FFF
Flashing
1 mA
Zeroing error – Recover after
calibrating
C.FFF
Flashing
1 mA
Calibration error – Recover after
calibrating or replacing the sensor
1.FFF
Flashing
1 mA
SMART sensor error
2.FFF
Flashing
1 mA
Sensor error
U-Or
Flashing
1mA
Sensor under-range
U Or
Flashing
22mA for ~5 seconds
then settled at 1mA
Sensor over-range
Table 8-2 Fault Codes
Function Codes
Function
Code
LED Display
Description
Status
Bit
Data Area
L
L.
Low Alarm
Set the relay low alarm value
H
H.
High Alarm
Set the relay high alarm value
4
4.
Range of 4-20 mA
Set the range of 4-20 mA
output
1
1.
Minute
Set system time – minute
H
h.
Hour
Set system time – hour
D
d.
Date
Set system time – date
E
E.
Month
Set system time – month
8
8.
Year
Set system time – year
0
0.
Zeroing
C
C.
Calibration