Model 4501-XX Toxic Gas Sensor Module
5.4 MAINTENANCE SUB-MENU
Function
Display
Description
Reference
M
E
S T
M E
S
T
M
E
S T
M
E
S T
M E
S
T
M
E
S T
M
E
S T
M E
S
T
M E
S
T
M
E
S T
M
E
S T
Enter
4mA
DONE
Acknowledges 4mA calibration
or Sub-Routine A
M- Range
100 PPM
Enter Calibration Range Menu
Banner: Use [
S
] or [
T
] to change range, [E] when done
Enter
H2S
Range
Enter Range Menu
H2S
MAINT:
Enter
20mA
DONE
Acknowledges 20mA calibration
or Sub-Routine A
A multi-meter should be inserted into the current loop
to measure the loop current between the power and
the sensor module No gas is required for this step
CAL: XmA
ERROR!
The expected range of the 4mA and 20mA is limited to factory
defined values. If the actual signal is outside of this
predefined range, an error is displayed indicating a hardware
or installation problem. Contact technical support.
Sub-Routine A
Down
Acknowledge range selection
Key
H2S
XX PPM
Default Display (example 4501-05)
Down
H2S
MAINT:
Mode
H2S
CALIB:
Enter
Cal: 4mA
Enter Calibration 4 mA Menu
Banner: Use [
S
] or [
T
] to change 4mA output, [E] when done
A multi-meter should be inserted into the current loop
to measure the loop current between the power and
the sensor module No gas is required for this step
Table 5-3
Maintenance Sub Menu
MAINT:
4mA
Down
MAINT:
20mA
Enter
Range
DONE
Down
H2S
MAINT:
MAINT
CAL:20mA
Enter Calibration 20 mA Menu
Banner: Use [
S
] or [
T
] to change 20mA output, [E] when
done
Enter
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