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Operation
4/20 mA Loop Test
{22 mA full-scale and .5 mA fault check}
Start: Press S1 5 times within a two to three second
period of time. The yellow "system" LED will turn off
and the yellow "calibrate" LED will blink fast. See the
following example. Output should be 21 to 22.5 mA.
22 mA Full Scale Output Test
LED
SEQUENCE
POWER
G
SYSTEM
Y
Y
CALIBRATE
R
FAULT
mA FAULT
R
SOURCE
G
ATMOS
G
Manning AirScan-iR Refrigerant Sensor
continued
OFF
N/A
N/A
N/A
N/A
19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved.
To proceed to the next step in the mA test, press and
hold S1 for 1 second or more until the yellow
"calibrate" LED is a medium double blink. See the
following example. The output should be between .4
and .6 mA.
.5 mA Fault Output Test
LED
SEQUENCE
POWER
G
SYSTEM
Y
OFF
CALIBRATE
Y
FAULT
R
N/A
R
N/A
mA FAULT
N/A
SOURCE
G
N/A
ATMOS
G
Exit: Press and hold S1 for 1 second or more until
the yellow "system" LED resumes the state before the
mA test was initiated and the yellow "calibrate" LED
turns off.
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