Ir-F9-Rxx/Airscan Ir Calibration Procedure - Honeywell VA201T Calibration Handbook

IR-F9-RXX/AirScan iR Calibration Procedure

General Information
There are only two pots on the pre-amp that are used for calibrations. All other pots are factory set and
must never be adjusted. They can only be properly adjusted at the factory. Refer to the Manning AirScan
instruction manual for more in-depth calibration procedure details.
Zero Calibration
1. Press and hold both "zero" (S1) and "span (S2) buttons simultaneously for one second or until the "system"
LED begins to blink slowly. Refer to figure 11 for switch location.
Note 1: Checking voltage to
sensor at +24 and GND
Note 2: Reading signal at
TEST+ and
2. If calibrating a CO2 unit or in a high-background environment, apply pure nitrogen (N2) into the calibration
port at a rate of 1.0 L/min. for at least 45 seconds (OR until output signal is within ± .02 mA of signal
deviation/change).
3. Press and hold "zero" button (S1) for approximately 1 second or until the yellow "calibrate" LED is
continuous ON.
4. When yellow calibration LED is continuous ON, release "zero" button. The "calibrate" LED will turn off
and the unit will be zeroed.
5. Parameters are now programmed into memory.
6. Place multi-meter leads on Test(+) and Test(—) and ensure the output is steadily resting between 3.9 to
4.1mA (39.0 to 41.0mV).
If this isn't the case, initiate the auto "zero" procedure once again.
7. Press and hold both "zero" (S1) and "span" (S2) buttons simultaneously for one second or until the yellow
"system" LED will be ON solid.
8. End of zero procedure.
IR-F9 / AirScan IR
ICSP Programming Port
JP3
Zero Adjust
Span Adjust
S1
ZERO
SPAN
S2
24
VDC
Black Red
- +
SIG
+24
GND
SHLD
JP1
TEST +
TEST -
TEST-
40-200
mVDC
Black Red
- +
Figure 11. IR-F9 Switch Locations
Calibration Handbook
Pushbutton S1
Pushbutton S2
Serial Port
JP2
Draw
Chamber
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
IR SOURCE
ATMOS
ACTIVE
95
Tx LED
Rx LED
Tubing to calibration point
TM iR