Honeywell AirScan iR User manual

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 1
AirScanTMiR
Instruction and
Installation Manual
Rev A
Refrigerant Sensor for
Commercial Applications
Instruction and Installation Manual
Rev A
Manning
AirScanTMiR
Refrigerant Sensor for
Industrial Applications
Honeywell Analytics
11511 West 83rd Terrace
Lenexa, Kansas 66214 [e-mail]
800.444.9935 or 913.894.1185 www.gasalarm.com
913.894.1296 fax 19100AirScan-iR-ind 5/2006 REVA
913 894 1296 fax
19072 ECF9NH3 4/2006 REVE
Manning AirScan
MOUNT ENCLOSURE THIS END UP. DO NOT BLOCK PERFORATED VENT HOLES.

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 2
Contents Serial number:
Section Title Page
1 Sensor Description System Specifications and Sensor Specifications 4
2 Installation ALocating the Sensor 5
Figure 1: Mounting Dimensions for the AirScanTMiR 5
BWiring 6
Figure 2: Wiring Diagram for AirScanTMiR 6
3 Operation AStart-up Procedure 7
Figure 3: Required LED Status at Start-up 7
BPushbutton Operation, LED Indicators, Adjustment Pots and Test Points 8
Figure 4: Board Component Layout 8
Figure 5: LED Layout 8
LED Indicators and Blink Sequence 9
Figure 6: LED Blink Sequence 9
Figure 7: LED Indicator Summary 10
Normal Run Modes 10
4/20 mA Loop Test Mode 10
Calibration Mode 10
Fault Indicator Error Sequences 11
CModes of Operation 12
Normal Run Modes 12
4/20 mA Loop Modes 13
Calibration / Programming Modes 14
DCalibration 15
Figure 8: Board Component Layout 15
4/20 mA Output Calibration 17
Zero Calibration 17
Figure 9: Board Component Layout 18
Span Calibration 18
EDiagnostic Procedures 19
Simple Zero Test 19
4/20 mA Output Loop Integrity Check 19
FTroubleshooting 21
Electrical Interference 21
Figure 10: Troubleshooting the AirScanTMiR 21
Sensor On-Board Diagnostic System 21
Error on 4/20 mA Output 22
Sensor Output at 0 mA 22
Sensor Output at .5 mA 22
Gas Concentration Indicated with No Refrigerant Present 22
IR Source Failure 22
4 Maintenance 23
5 Replacement Parts 23
6 Limited Warranty 24

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 3
Introduction
This manual has been prepared to help in the use and installation of the Manning
AirScanTMiR (Infrared Refrigerants) Sensor. This manual will convey the operating principles
of the sensor, ensure proper installation, and demonstrate start-up and routine
maintenance procedures.
This manual must be carefully followed by all individuals who have or will
have the responsibility for using or servicing the Manning AirScanTMiR Sensor.
Warranties made by Honeywell Analytics with respect to this equipment will be voided if
the equipment is not used and serviced in accordance with the instructions in this manual.
If in doubt about a procedure, please contact Honeywell Analytics before proceeding.

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 4
1Sensor Description
Gas detection by the infrared method is based on the
principle that most gases absorb infrared energy at a
characteristic frequency. In this instrument, a broad
band infrared source emits energy which is then band-
pass filtered to produce a narrow range of frequencies
characteristic of the refrigerants’ (CFC/HCFC/HFC)
absorption spectra. Any refrigerant in the gas sample
cell selectively absorbs energy reaching the detector.
This reduction in energy is detected, amplified and sent
to the signal processing portion of the system.
The Manning AirScanTMiR Sensor line is a three-wire,
4/20 mA sensor for two bands of refrigerants available
in a range of 0—3,000 ppm, but can be adjusted for
lower ranges, if required. The low-band or R-404a
infrared sensor reacts to R-123, R-134a, R-404a and
R-507. The high-band or R-22 AirScanTMiR sensor
reacts to R-22.
Its solid, high-mass metal bench provides structural and
thermal stability, greater immunity to vibration, as well as
superior EMI/RFI shielding of the detector and source.
Internal compensation for environmental changes
allows the sensor to automatically adapt to fluctuating
temperature and humidity conditions. The unit exhibits
extremely high reliability with no moving parts.
Every two seconds SensorCheckTM technology
monitors the AirScanTMiR source and ensures that the
dual channels are functioning properly. A notification
signal will be transmitted if any of several performance
parameters is not met.
Monitoring equipment must be configured to indicate
a fault if the signal is less than 1.5 mA. All signals over
20 mA must be considered a high gas concentration.
Manning infrared sensors are normally long-lived
(5 years plus), unless physically damaged or wetted
with water or other liquid.
System Specifications
Electrical Power: 24 Volts DC regulated, 1.0 amp.
Output: Linear 4/20 mA output into a load resistor of
500 ohms maximum
Cable Length to Sensor: 1,000 feet maximum
Unit Enclosure: NEMA 4, gasketed, molded fiberglass
reinforced polyester. Non-painted, non-rusting
construction appropriate for food areas. UL 508 listed,
CSA certified for use with industrial control equipment.
Cable Recommendation: Three conductor, stranded,
shielded cable with drain wire, all enclosed in a vinyl jacket.
For cable runs up to 200 feet use, #18 AWG (Belden #8770
or equivalent). For cable runs up to 1,000 feet, use #16 AWG
(Belden #8618 or equivalent). If sensor is SUPER HEAT
equipped (—15° F and below), contact Honeywell Analytics
for cable recommendations.
NOTE: The standard AirScanTMiR is for use in non-
classified areas only.
Sensor Specifications
Type: CFC/HCFC/HFC selective infrared gas sensor/
transmitter AirScanTMiR
Method of Detection: Dual channel infrared energy
absorption (N.D.I.R. Non-dispersive Infrared)
Gases Monitored: Low-Band (R-404a, R-507,
R-134a, and R-123), High-Band (R-22)
Range Available: 0—3,000 ppm (can be rescaled to
0—1,000 ppm, or 0—500 ppm if required)
SensorCheckTM Features: Dual channel functionality test,
source strength evaluation, incoming voltage monitor, IR
source integrity check, operating temperature monitor,
“zero” down drift monitor, and internal circuitry check.
Accuracy: ± 3% of full scale
Repeatability: ± 1% of full scale
Cross Sensitivity: Not affected by moisture, food
odors, floor cleaners, temperature changes, etc.
Operating Humidity: 0—100% RH (condensing).
ATMOS equipped®enviro-adaptive technology option
required for condensing conditions or refrigerated areas.
Operating Temperatures: —50° F to +140° F. ATMOS
equipped®enviro-adaptive technology option
required for refrigerated areas or outdoors.
Storage Temperature: —20° F to +140° F
Gas Sampling: Diffusion method with no moving parts
Sampling Frequency: Real time continuous monitoring
of all points
Response Time: T90 in 10 seconds with full-scale target
calibration gas @ .75 liters/min. flow rate
Weight: 4.4 lbs.
Dimensions: 9.59" high x 7.71" wide x 4.52" deep

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 5
2Installation
ALocating the Sensor
Because each sensor can only “report” what it is
seeing at the moment, it is very important that the
sensor be located where leaks are most likely to
occur. CFC/ HCFC/HFC vapor is heavier than
ambient air, so in a room with no air movement it will
tend to settle. For quickest detection, mount the
sensor about one to two feet from the floor, close to
the potential leak source.
If the primary application is the fastest possible leak
detection, mount the sensor near the potential leak
sources. In doing this, be aware that the indicated
concentration may not be representative of
personnel exposure and easy access for the
required calibration and maintenance could be
compromised.
General Mounting Considerations:
• Must be easily accessible for calibration and
maintenance.
• Always mount the sensor vertically.
• Mount the sensor close to the potential leak
source for fastest possible leak detection.
• If personnel protection is the primary
application, mount in the “breathing zone.”
• Protect sensor from water, excessive
humidity, and wash-down.
• Take air movement and ventilation patterns
into account.
• To prevent electrical interference, keep
sensor and wire runs away from mercury
vapor lights, variable speed drives, and radio
repeaters.
• Protect sensor from physical damage (fork
lifts, etc.).
• Do not mount the sensor over a door in a
refrigerated area.
• For highly critical locations more than one
sensor should be installed in each room.
Very Important:
• Sensor must be mounted vertically
• Never mount sensor flat on a ceiling
• Enter enclosure only through existing hole in
bottom of enclosure
• Always make a drip loop in the conduit
• Never mount sensor on a vibrating surface.
Mount sensor enclosures through the flange holes as
shown in Figure 1, and always mount vertically.
Penthouses: Multi-Coil (defrost one coil at a time)
In this case the best location is usually in the center
of the penthouse four or five feet above the grate.
Single Coil (or when all coils defrost at the same time)
In this case high moisture conditions can occur and
the sensor should be mounted one foot above the
grate.
Engine Rooms: The Manning AirScanTMiR sensor
should be mounted in a cool part of the room, if
possible. Keep the sensor away from hot air
exhausting from electric motors or other machinery.
Figure 1. Mounting Dimensions
4" 5/16" diameter
8 3/4"
Manning AirScan
MOUNT ENCLOSURE THIS END UP. DO NOT BLOCK PERFORATED VENT HOLES.

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 6
2Installation continued
Ceiling Hung Evaporators: When mounting Manning
AirScanTMiR sensors near evaporators, mount the
sensor no higher than two feet below the top of the
evaporator coil. Do not mount in high air flow (1,200
feet/minute maximum). Never mount the sensor on
evaporators as vibration can damage the sensor.
Other Locations: When mounting AirScanTMiR
sensors in locations such as roof top air units,
ductwork, attic spaces, makeup air intakes, etc.,
contact Honeywell Analytics for application assistance
and recommendations.
BWiring
Electrical wiring must comply with all applicable codes.
Plant equipment that may be involved and operating
conditions should be discussed with local operating
personnel to determine if any special needs should be
considered.
Nearly all start-up problems are due to improper wiring
or monitor configuration. Please follow these
guidelines carefully.
Always use three conductor, insulated, stranded,
shielded copper cable. Use only three conductor cable,
not two cables of two conductor wire (see Figure 2).
Do not pull sensor wiring with AC power cables.
This will cause electrical interference. Be sure there are
no breaks or splices in sensor wiring runs. If cable runs
cannot be made without a splice, all connections must
be soldered. Soldering should be done using a rosin
flux to tie the connecting ends of sensor wires to ensure
a positive and long-lasting contact.
If the AirScanTMiR is to be used with the AirAlertTM96d, please
call Honeywell Analytics for specific wiring instructions.
Ground the shield at the main control panel. Connect
the shield wire in the sensor terminal block labeled
shield. Tape all exposed shield wire at the sensor to
insulate it from the enclosure.
All penetrations into a refrigerated room should be
sealed to prevent condensate from forming in the
conduit and dripping into the sensor enclosure.
Make drip loops for cables going into sensor
housings (see Figure 1). Follow the special mounting
instructions on the enclosure (…This End Up).
Electrical Power: 24 VDC regulated, 1.0 amp.
Output: Circuit board mounted sensor provides a
linear 4/20 mA output. Monitoring equipment may
have a maximum input impedance of 500 ohms.
Contact Honeywell Analytics for specific wiring
instructions when using AirScanTMiR sensors with an
AirAlertTM96d readout unit.
Cable Recommendation: Use #18/3 (Belden
#8770) for cable runs up to 200 feet. Use #16/3
(Belden #8618) for cable runs up to 1,000 feet. Use
only the existing punched holes for connections to
the sensor. If sensor is SUPER HEAT equipped,
contact Manning Systems for cable
recommendations. Use only the existing punched
holes for connections to the sensor.
Monitoring: The AirScanTMiR Refrigerant Sensor may
be monitored by any Manning Readout/Alarm unit or
other appropriately configured system. Monitoring
equipment must be configured to indicate a fault if
the signal is below 1.5 mA. All signals above 20 mA
must be considered a high gas concentration. A
failed sensor will output a 0.5 mA signal.
Figure 2. Wiring Diagram
TEST +
JP1
TEST -
SIG
+24
GND
SHLD
White connects to signal input of
monitoring equipment
Red connects to 24 VDC power supply
positive side
Black connects to 24 VDC ground side
Bare wire wrap connects to case ground
at monitoring equipment (earth ground)
DC ground (black)
Shield (bare)
Output (white)
+24 VDC (red)

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 7
3Operation
The AirScanTMiR has several modes of operation,
including two normal run modes, two 4/20 mA loop
check modes and five calibration modes. These will
be explained in Operation, Section C, Modes of
Operation. Modes are entered by properly activating
pushbuttons located on the circuit board, shown in
Figure 4.
Sensor operation status is indicated by the blink
pattern of seven LED’s located in a vertical row on the
right side of the sensor circuit board (see Figure 4).
LED status is differentiated by color and duration/
pattern of blink(s). LED Indicators and Blink
Sequences are shown in Figure 6, followed by an
explanation of blink patterns.
AStart-Up Procedure
Before applying power, make a final check of all wiring
for continuity, shorts, grounds, etc. It is usually best to
disconnect external alarms and other equipment from
the sensor until the initial start-up procedures are
completed.
Check the power supply voltage to the sensor with a
digital volt meter set to VDC. Place the black lead on
sensor terminal GND and the red lead on +24 (see
Figure 4, Note 1). Voltage should be between 21 and
28 VDC. If voltage is outside this range, check power
supply and wiring.
After power-up, ensure the LED’s below are
operational as follows (see Figure 3):
• Green “Power” LED continuous ON
• Both Fault LED’s are OFF
• Green “source” LED is blinking once every
2 seconds
NOTE: For cold/humid adverse environmental
conditions the “ATMOS” LED may be turning on and
off periodically. In addition, the “system” LED may be
blinking or continuous ON, also described in later
sections.
IMPORTANT: The AirScanTMiR sensor is factory
calibrated and should require minimal adjustments
after installation. This sensor was calibrated at an
altitude of 1,000 ft. above sea level. For
installations where the altitude is greater than
3,500 feet above sea level, it is necessary to
recalibrate the sensor “span” during the initial
setup for more accuracy and reliability.
Allow the sensor to operate for 12 hours with the
enclosure sealed prior to testing the sensors. This will
give the sensor time to reach thermal equilibrium to
the external and internal temperatures while in
operation. Because sensors are normally located at a
distance from the main unit, the test time required and
accuracy of the response checks will be improved if
two people perform the start-up procedures and use
radio contact.
Start-Up Test:
1One person exposes each sensor to a small
amount of the gas that is being monitored.
2The second person stays at the control unit to
determine that each sensor, when exposed to
the gas fumes, is connected to the proper input
and responds, causing appropriate alarm
functions.
Figure 3. Required LED Status at Start-up
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
WITH OUTPUT
FILTERING
WITHOUT OUTPUT
FILTERING
LED
OFF
OFF
OFF
ON PERIODICALLY
OFF
OFF
OFF
ON PERIODICALLY

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 8
3Operation continued
BPushbutton Operation, LED
Indicators, Adjustment Pots and
Test Points
The Manning AirScanTMiR has two internal push-
buttons, and two adjustment pots that are utilized for
navigation of test functions, calibrations, and operating
modes. In addition, a pair of test points is also
provided that assist in the connection to standard
meter leads for use in the upcoming calibration and
diagnostic procedures (see Figure 4).
Figure 4. Board Component Layout
• “Zero” adjustment pot — adjusts output
calibration of the 4 mA nominal resting point.
• “Span” adjustment pot — adjusts the 20 mA
concentration level or unit span/sensitivity.
• Pushbutton S1 — used to initiate the auto-zero
function, program the 4 mA output calibration,
and initiate the 4/20 mA loop test.
• Pushbutton S2 — used to program the span
setting.
• Test(+) and Test(—) for connection to a DC Volt
meter (see Figure 4, Note 2).
IMPORTANT: The pushbutton(s) must be pressed
the correct number of times and at the correct rate.
• When a multi-press sequence must be
performed, the button must be pressed rapidly
and evenly, lifting one’s finger completely from
the actuator for each consecutive press.
• For press and hold activations, one’s finger
must always be applying a down pressure
without disruption for the specified time in order
to activate the desired mode.
• See complete details of each operation in other
parts of the manual.
The AirScanTMiR also has a group of LED’s (see Figure
5) that blink in specific sequences (see Figure 6 on
next page) to indicate sensor operation and
programming modes. A summary of sensor operation
and programming modes with corresponding LED
blink sequences is shown in Figure 7 on page 10.
Figure 5. LED Layout
TEST +
S2
S1
JP3
JP1
JP2
ZERO
SPAN
TEST -
SIG
+24
GND
SHLD
Draw
Chamber
SYSTEM
CALIBRATE
FAU LT
mA FAULT
IR SOURCE
ATMOS
ACTIVE
POWER
24
Black
-Red +
VDC
40-200
Black
-Red +
mVDC
Note 1: Checking
voltage to sensor
at +24 and GND
Note 2: Reading
signal at TEST+
and TEST-
Rx LEDPushbutton S1
Pushbutton S2
Zero Adjust
Span Adjust
Tx LED
Serial PortICSP Programming Port
Tubing to
calibration point
Draw
Chamber
SYSTEM
CALIBRATE
FAULT
mA FAULT
IR SOURCE
ATMOS
ACTIVE
POWER

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 9
3Operation continued
LED Indicators and Blink Sequence
Figure 6. LED Blink Sequence
Green Power LED
• Continuous ON when power is applied
Yellow System LED
• Continuous ON during normal filtered output run
mode — “dead band” from 4 to 4.6 mA
• Slow blink during normal non-filtered output run
mode
• Fast blink indicating unit lost calibration data
• OFF during 4/20 mA loop check
Yellow Calibrate LED
• Continuous momentary ON for auto-zero mode
activation
• Slow blink for 4 mA output calibration mode
• Medium double blink indicates 4/20 mA loop
check .5 mA (low)
• Fast blink for “span” calibration mode and
4/20 mA loop check 22 mA (high)
Red Fault LED (all scenarios produce a .5 mA
output)
• Continuous ON indicates a failed source, low
signal, or circuit failure
• Slow blink indicates the power supply DC 24V
input voltage is too low.
• Medium double blink indicates sensor is outside
the operating temperature range.
• Fast blink indicates the signal drifted below
4 mA and needs to be re-calibrated, only in non-
filtered output run mode (no dead-band).
Red mA Fault LED attempts to output .5 mA
fault signal
• Fast blink indicates 4/20 mA loop failure or load
resistance too high
Green Source LED
• One blink every 2 seconds indicates when
source is energized and also that the source is
not short circuited.
Green ATMOS LED
• Continuous ON indicates ATMOS circuitry is
active or adjusting the enclosure’s internal
environmental conditions for the sensor to
function reliably.
NOTES:
• If the Source LED isn’t blinking, do not proceed
until the condition is corrected.
• If a Fault LED is lighted, immediately refer to
Fault Indicator Error Sequences (page 11) to
determine potential problem. Do not attempt
calibration if a Fault is indicated.
• All status LED’s are subordinate to Fault
indicators.
• If an LED is indicated as OFF, it must actually
be OFF for proper sensor operation.
• If an LED status is N/A (not applicable), that
LED indication may vary depending on other
operational factors.
SOURCE BLINK
SLOW BLINK
MEDIUM DOUBLE BLINK
FAST BLINK
CONTINUOUS ON
1 sec. 2 sec. 3 sec.SEQUENCE

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 10
3Operation continued
Figure 7. LED Indicator Summary
See LED indicators and blink sequence descriptions on page 9.
Normal Run Mode 4/20 mA Loop Test Mode
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
NOTE 1: Dead-band from 4 mA to 4.6 mA
NOTE 2: No dead-band from 0 to 26 mA
NOTE 3: Environmental compensation energized for cold temperatures
G
G
G
R
R
Y
Y
WITH OUTPUT
FILTERING
1
WITHOUT OUTPUT
FILTERING
2
LED
OFF
OFF
OFF
ON PERIODICALLY
3
OFF
OFF
OFF
ON PERIODICALLY
3
G= Green LED Y= Yellow LED R= Red LED= Initiated by button press
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
4/20 mA LOOP TEST
(22 mA HIGH)
1
4/20mA LOOP TEST
(.5 mA LOW)
1
NOTE 1: Error on output will result in fast blink on red mA FAULT LED.
LED
OFF
N/A
N/A
N/A
N/A
OFF
N/A
N/A
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
NOTE 1: Indicates that “Zero” function is initiated and pushbutton S1 can be released. Yellow Calibrate LED will be off after pushbutton is released.
NOTE 2: Indicates unit lost the factory calibration data. Contact Manning Systems.
G
G
G
R
R
Y
Y
ZERO FUNCTION
INITIATED
1
LED DURING SPAN
CALIBRATION
DURING 4 mA
OUTPUT CALIBRATION
FACTORY CALIBRATION
LOST
2
N/A
OFF
OFF
N/A
N/A
N/A
N/A
N/A
N/A
N/A
OFF
OFF
N/A
N/A
N/A
OFF
N/A
N/A
Calibration Mode

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 11
3Operation continued
Figure 7. LED Indicator Summary, continued
See LED indicators and blink sequence descriptions on page 9.
Fault Indicator Error Sequences
G= Green LED Y= Yellow LED R= Red LED= Initiated by button press
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
NOTE 1: Indicates Normal Run Mode wthout output filtering where unit lost factory calibration data. Contact Manning Systems for technical support.
NOTE 2: Indicates failed 4/20 mA output signal. Load resistance is too high.
G
G
G
R
R
Y
Y
LOST FACTORY
CALIBRATION
1
LED FAILED 4/20 mA
OUTPUT
2
LOW SIGNAL OR
FAILED SOURCE OR CIRCUIT
POWER SUPPLY
VOLTAGE TOO LOW
OPERATING TEMPERATURE
RANGE EXCEEDED
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
READING DRIFTED
BELOW 4 mA
1
SHORTED
SOURCE
LED
NOTE 1: Indicates the gas reading drifted below 4 mA and needs to be
re-calibrated only in non-filtered output run mode (no dead-band).
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
OFF
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 12
3Operation continued
CModes of Operation
The Manning AirScanTMiR has various modes of
operation and calibration:
• Normal run mode with output filtering
• Normal run mode without output filtering
• 4/20 mA loop check
• 4/20 mA calibration to an external PLC or
read-out panel
• Neutral gas resting point or “zero” calibration
mode
• Span calibration modes
Normal Run Modes
Normal run mode with output filtering
This mode outputs a signal from 4 to 27 mA with a
“dead band” from 4 to 4.6 mA. This “dead band”
masks small environmental anomalies that could
facilitate output signal fluctuations or transients
around the 4 mA resting point when the unit is not
sensing target gas.
Start: If the “system” LED is blinking slowly, press
and hold both S1 and S2 simultaneously for 1 second
or more until the “system” LED is continuous ON,
then release both buttons. If the “system” LED is
blinking fast, this mode cannot be engaged and the
factory needs to be contacted. See the following
example.
Normal run mode without output filtering
This mode outputs a signal that nominally rests at 4
mA and can range continuously from 0 to 27 mA. Any
subtle changes in sensor response will be sent to the
mA loop output. This mode is entered automatically
when the calibration modes are activated. Some users
may wish to see the subtle anomalies in the signal
near the nominal 4 mA rest area.
Start: If the “system” LED is continuous ON, press
and hold both S1 and S2 simultaneously for 1 second
or more until the “system” LED is blinking slowly then
release both buttons to enter this mode. If the
“system” LED is blinking fast this mode is always
engaged and can only be exited by fully calibrating
the unit. See the following example.
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
OFF
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
OFF
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 13
3Operation continued
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
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
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.
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 14
3Operation continued
Calibration/Programming Modes:
Refer to Calibration, Section D before proceeding.
Auto “ZERO” Program Function
Start: Press and hold S1 for 1 second or until the yellow
“calibrate” LED turns continuous ON. Release S1 and
the yellow “calibrate” LED will turn off. This indicates the
unit “zero” is now programmed to a neutral or 4 mA
resting state for 0 ppm of target gas.
“Span” Calibration/Programming Mode
Start: Press and hold S2 for 1 second or until the
yellow “system” LED blinks slowly and the yellow
“calibrate” LED blinks fast. Once in this mode the
“span” pot can be adjusted to determine the 20 mA
full-scale concentration.
Exit: To program the “span” setting and exit this
mode, press and hold S2 for 1 second or until the
yellow “system” LED resumes the state before the
calibration mode was initiated and the yellow
“calibrate” LED turns off.
4 mA Output Calibration/Programming Mode
Start: Press and hold S1 for 7 seconds or until the
yellow “system” LED turns continuous ON and the
yellow “calibrate LED blinks slowly. See the following
example.
Once in this mode the “zero” pot can be adjusted to
calibrate the 4 mA output to a PLC, SCADA system,
panel, etc.
Exit: To program the 4 mA calibration point and exit
this mode, press and hold S1 for 1 second or until
the yellow “system” LED resumes the state before the
calibration mode was initiated and the yellow
“calibrate” LED turns off.
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
N/A
OFF
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
N/A
OFF
OFF
N/A
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 15
3Operation continued
DCalibration
Before calibrating the unit, ensure the startup
procedure was followed and unit was powered on for a
minimum of 12 hours (with the enclosure door closed)
in the operating environment.
IMPORTANT NOTE: For environments where the
ambient
temperature is less than 10° F, during the
calibration procedure, the door must be closed as far as
possible. This will ensure the sensor temperature will not
drop below the minimum operating temperature which
could adversely affect the programmed calibration
parameters.
There are only two adjustment pots and two
pushbuttons on the main board that are used for
programming the calibration parameters. See Section
B, Pushbutton Operation, LED Indicators, Adjustment
Pots and Test Points. Use Section B to familiarize
yourself with the pushbuttons S1, S2, adjustment pots
“zero”, “span”, Test(+), Test(—) and their locations on
the main board (see Figure 8).
Figure 8. Board Component Layout
In addition, the LED indicators and blink pattern
meanings are also summarized in this section. The
calibration procedure will require use and knowledge
of the following tools within the sensor:
• “Zero” adjustment pot — adjusts output
calibration of the 4 mA nominal resting point
• “Span” adjustment pot — adjusts the 20 mA
concentration level or unit span/sensitivity
• Pushbutton S1 — used to initiate the auto-zero
function and program the 4 mA output
calibration
• Pushbutton S2 — used to program the span
setting
In addition, there are four LED’s used in the
calibration procedure. Yellow “system” and
“calibrate”, and red “fault” and “mA fault” LED’s
located on the main board are utilized as status
indicators during the calibration procedure and as
diagnostic and trouble indicators.
Non-calibrated Sensor or Loss of Factory Calibration
IMPORTANT: Upon power up, if the yellow “system”
LED is showing a fast blink pattern, the unit hasn’t
been calibrated yet or has lost the factory calibration
and requires a full calibration before it can reliably
read the target gas. See the following example.
Should this occur, please contact Honeywell Analytics
for assistance!
TEST +
S2
S1
JP3
JP1
JP2
ZERO
SPAN
TEST -
SIG
+24
GND
SHLD
Draw
Chamber
SYSTEM
CALIBRATE
FAU LT
mA FAULT
IR SOURCE
ATMOS
ACTIVE
POWER
Rx LEDPushbutton S1
Pushbutton S2
Zero Adjust
Span Adjust
Tx LED
Serial PortICSP Programming Port
Tubing to
calibration point
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
N/A
N/A
N/A
N/A
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 16
3Operation continued
Before continuing with the calibration procedure,
determine which of the two Normal output modes is
best for the control scheme. Filtered output holds a
stable 4 mA signal within a dead-band range while
the non-filtered output allows the signal to be seen
without any output limitations.
After this output mode choice is made, continue
through Steps 1—3 of the Calibration Procedure. As a
first step, the 4 mA output is matched to the signal
input device being used as a control panel. After this
is accomplished, Step 2 (Zero Calibration) and Step
3 (Span Calibration) can be completed in that order.
Filtered Output Mode
Each unit is equipped with a filtered output or “dead
band” output mode which locks the output at 4 mA
for signal readings of 4 to 4.6 mA. This masks
surrounding abrupt adverse environmental transients
that would cause a small short-term anomaly on the
4 mA resting point for a near 0 ppm reading of the
target gas. In this mode, the yellow “system” LED will
be ON. See the following example.
Non-Filtered Output Mode (no signal deadband)
Start: Press and hold both the “zero” (S1) and
“span” (S2) buttons simultaneously for one second or
until the “system” LED begins to blink slowly. See
example below.
This mode will allow any anomalies to be transmitted
from 0 to 27 mA on the output. This mode is also
used in the upcoming Simple Zero Test procedure.
Exit: To revert back to “dead band” mode, repeat
the same button press procedure above. This button
press sequence will toggle between modes (filtered
to non-filtered).
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
OFF
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
OFF
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 17
3Operation continued
STEP 1
4-20 mA Output Calibration
This procedure calibrates the 4/20 mA output to match
a PLC input converter or various devices that interpret
the 4/20 mA signal output to ensure the 4 mA output
rests at a true 4 mA even with minor mismatches in
load resistance, long feed wiring, or adverse
environmental conditions.
Start: Set meter to mV DC and place meter leads on
Test(+) and Test(—) respectively (see Figure 9).
• Press and hold the “zero” button (S1) for 5
seconds or until the “calibrate” LED is blinking
slowly and the “system” LED is continuous ON.
Make sure the “mA Fault” LED is OFF.
• Adjust the zero potentiometer until the output
reads 3.99 to 4.01 mA (39.9 to 40.1 mV). This
sets the 4 mA resting point. Make small
adjustments and wait for the output to change
because adjustment response is delayed
between source pulses.
4 mA output programming calibration mode
Exit: Press and hold the “zero” button (S1) for one
second or more until the “calibrate” LED turns off.
The “system” LED will resume the previous state,
either “filtered” or “non-filtered” output mode. This
indicates the parameters are now programmed into
memory.
STEP 2
Zero Calibration
This procedure sets the internal reference that is
indicative of 0 ppm of target gas. It MUST be
performed before proceeding or every other setting
will be offset and inaccurate. The “zero” can be
initiated at any time as long as a neutral gas is flowing
through the calibration port or the surrounding air is
known to be FREE of any target gas down to 1 ppm.
Start: Apply pure nitrogen (N2) into the calibration
port at a rate of .6 liter/min. for at least 3 minutes (OR
until output signal is within ± .02 mA of signal
deviation/change).
• Press and hold the “zero” button (S1) for
approximately 1 second or until the yellow
“calibrate” LED is continuous ON.
• When yellow calibration LED is continuous ON,
release the “zero” button. The “calibrate” LED
will turn off and the unit will be zeroed. See
example below.
“Zero” programming calibration mode
Exit: System will automatically resume previous mode,
either “normal” or “no dead band” mode. This indicates
the parameters are now programmed into memory.
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
N/A
OFF
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
N/A
OFF
OFF
N/A
N/A
Place multi-meter leads on Test(+) and Test(—) and
ensure the output is steadily resting between 3.9 to
4.1 mA (see Figure 9 on next page). If this isn’t the
case, initiate the auto “zero” procedure once again.

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 18
3Operation continued
Figure 9. Board Component Layout
STEP 3
Span Calibration
This procedure sets the “span” or concentration level
that would depict a 20 mA reading for full-scale
target gas on the 4/20 mA output. The lower the
target gas concentration is for a span of 20 mA, the
more sensitive or responsive the unit would be to
lower ppm readings.
NOTE: This procedure should only be performed if
the zero and 4/20 mA procedures are successfully
completed.
Start: Set meter to mV DC, place meter leads on
Test(+) and Test(—) respectively (see Figure 9).
Press and hold the “span” button (S2) for 1 second
or more until the yellow “calibrate” LED blinks fast
and the yellow “system” LED is blinking slowly. See
the following example.
Ensure the output rests between 3.9 and 4.1 mA
(39.0 to 41.0 mV). If this is not the case, perform the
“zero” procedure again.
Once the output is within the required range with
nitrogen flowing, apply full-scale target gas into the
calibration port at a rate of .6 liters/min for 3 minutes
immediately following the nitrogen flow.
If the signal is 26 mA or greater, adjust the “span”
potentiometer counter-clockwise until the signal is
near 20 mA. Because there is a slight delay in
potentiometer movement, make small
adjustments and wait for the output to change
because adjustment response is delayed between
source pulses.
Wait until the output signal has stabilized to within ±
.02 mA of signal deviation/change. Adjust the “span”
potentiometer again until the output reads around 20
mA.
Exit: Press and hold the “span” button (S2) for one
second or more until the yellow “calibrate” LED turns
off. The yellow “system” LED will resume the previous
state, either “filtered” or “non-filtered” output mode.
This indicates the parameters are now programmed
into memory.
TEST +
S2
S1
JP3
JP1
JP2
ZERO
SPAN
TEST -
SIG
+24
GND
SHLD
Draw
Chamber
SYSTEM
CALIBRATE
FAU LT
mA FAULT
IR SOURCE
ATMOS
ACTIVE
POWER
24
Black
-Red +
VDC
40-200
Black
-Red +
mVDC
Note 1: Checking
voltage to sensor
at +24 and GND
Note 2: Reading
signal at TEST+
and TEST-
Rx LEDPushbutton S1
Pushbutton S2
Zero Adjust
Span Adjust
Tx LED
Serial PortICSP Programming Port
Tubing to
calibration point
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
N/A
N/A
Apply pure nitrogen (N2) into the calibration port at
a rate of .6 Liter/min. for at least 3 minutes (OR until
output signal has stabilized to within ± .02 mA of
signal deviation/change). If N2is currently flowing
from previous “zero” calibration, disregard the
additional flow time.

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 19
3Operation continued
EDiagnostic Procedures
Simple Zero Test
This test will ensure the unit is calibrated for a true
“zero” and duly represents an absence of target gas
in this condition.
Start: Set meter to mV DC, place meter leads on
Test(+) and Test(—) respectively (see Figure 9).
• Apply pure nitrogen (N2) into the calibration port
at a rate of .6 Liter/min. for at least 3 minutes.
Check the status of the yellow “system” LED.
If this LED is continuous ON, place the unit in
non-filtered output run mode by pressing both
the “zero” (S1) and “span” (S2) buttons
simultaneously for 1 second or until the “system”
LED begins to blink slowly. See example below.
• Wait until output signal has stabilized to within
± .02 mA of signal deviation/change.
• Output should read between 3.9 and 4.1 mA
(39.0 to 41.0 mV).
If this is not the case, proceed to the next step.
• Follow the “zero” procedure above to re-zero
the unit
• Follow the “simple zero test” procedure to
ensure the unit is resting at the optimum 4 mA
point.
Simple “Zero” test — NO “Dead-band” mode 0 to 26 mA
Exit: Press and hold both the “zero” (S1) and “span”
(S2) buttons simultaneously for 1 second or more
until “system” LED is continuous ON. Unit should be
ready for long-term operation.
4/20 mA Output Loop Integrity Check
22 mA High Signal Test
STEP 1
Start: Set meter to mV DC, place meter leads on
Test(+) and Test(—) respectively (see Figure 9).
• Press the “zero” (S1) button 5 times. The yellow
“calibrate” LED will blink fast and the yellow
“system” LED will turn off. The output should be
21 to 22.5 mA (210 to 225 mV).
If a problem exists on the output signal line, or the
output load is not within the specified range, the “mA
fault” LED will blink either before or upon activation of
this test. In some cases the 22 mA high signal output
will cause incorrect output load resistance values to
surface because of the demand on high resistances
to produce high currents.
Low power supply voltages can also be something to
investigate if this error surfaces only when the 22 mA
high test is initiated.
During 4/20 mA loop test (22 mA high)
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
OFF
OFF
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
N/A

Manning AirScan-iR Refrigerant Sensor 19100 AirScan-iR-ind 05/2006 REVA Copyright © 2006 Manning Systems, Inc. All Rights Reserved. 20
3Operation continued
During 4/20 mA loop test (22 mA high) w/ Error on output
.5 mA Low Signal Output Test
.5 mA Low Signal Output Test.5 mA Low Signal Output Test
.5 mA Low Signal Output Test for
forfor
for
Fault
FaultFault
Fault C
CC
Conditions
onditionsonditions
onditions
NOTE: The unit must be in the 4/20 mA loop (22 mA
high) test to proceed with this test.
STEP 2
Start: Press and hold the “zero” (S1) button for at
least one second or until the yellow “calibrate” LED
shows medium double blink. The yellow “system”
LED will remain off and the output should change to
.4 to .6 mA (4 to 6 mV).
If a problem exists on the output signal line, or the
output load is not within the specified range, the “mA
fault” LED will blink either before or upon activation of
this test.
If an error surfaces during this test only, the
possibility of cross-talk can exist on the signal line.
This is caused by resistive shorts to power or other
voltage sources that can raise the .5 mA target
current on the line. Moisture in the connector can
cause stray voltage to migrate from the 24V DC pin
over to the 4/20 mA signal line. Check connectors or
refer to the troubleshooting section or error code
analysis section for assistance.
During 4/20 mA loop test (.5 mA low)
During 4/20 mA loop test (.5 mA low) with Error
STEP 3
Exit: Press and hold the “zero” (S1) button for at least
one second or until the yellow “calibrate LED turns off.
The yellow “system” LED will resume the previous
state, either “filtered” or “non-filtered” output mode.
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
N/A
POWER
SYSTEM
CALIBRATE
FAULT
mA FAULT
SOURCE
ATMOS
G
G
G
R
R
Y
Y
SEQUENCELED
OFF
N/A
N/A
N/A
NOTE: In addition to test procedures initiated
manually, every 2 seconds SensorCheckTM technology
monitors several performance parameters of the
AirScanTMiR. A notification of .5 mA on the output signal
is transmitted if any of these parameters is not met.