Industrial Scientific AirAware User manual

P/N 6700-1347
REV 2 Printed 0604-1000
Specifications Subject to Change
1001 Oakdale Road, Oakdale, PA 15071-1500
[phone] • Toll Free 1-800-DETECTS
FAX [phone] • Service Dept. 1-888-788-4353
Stationary Gas Monitor
Instruction
Manual
AirAware™

OUR MISSION
Design - Manufacture - Sell:
Highest quality products
for the preservation of
life and property.
Provide:
Best customer service
available.

Dear Valued Customer:
Thank you for buying and using the Industrial Scientific
AirAware™Gas Monitor.
The AirAware™can be relied upon for dependable service,
day after day. It has been designed, manufactured, tested
and proven under the most scrutinizing conditions
possible. With the minimal care and maintenance
described in this Instruction Manual, it will provide you
with years of reliable monitoring.
I am most concerned that you be pleased with the
performance of the AirAware™in the months and years
ahead. I urge you to call us with any questions or
comments you may have. Often times a phone call and a
question can save you hours of frustration. Please never
hesitate to contact me at 1-800-DETECTS
(338-3287).
All of us at Industrial Scientific appreciate the opportunity
to serve you.
Yours very truly,
Kent D. McElhattan
President & CEO
Industrial Scientific Corporation

3
C ONFIGURATIONS
All versions include a bright 4 digit LED display as well as low and
high visual alarm indication.
MONITOR - 68100056-MXX1
Includes on-board audio alarm. Domestic North American version
includes wall outlet power pack (120 VAC).
CONTROL - 68100056-CXX2
Dual alarm relays can be part of a control system to turn on a
ventilation system, activate a remote alarm or shut down a process.
Visual alarms are standard. Optional audio alarm is also available.
TRANSMIT - 68100056-TXX2
Has the ability to interface with any control device accepting a 4-20
mA signal. Visual alarms are standard. Optional audio alarm is also
available.
CONTROL/TRANSMIT - 68100056-CTXX2
Combines the functionality of the Control and Transmit instruments.
Visual alarms are standard. Optional audio alarm is also available.
1Specifying an “I” after the part number will indicate the selection
of the international version of the monitor (without power pack).
2Specifying an “A” after the part number will indicate the selection
on the optional on-board audio alarm.
W ARNINGS AND C AUTIONARY S TATEMENTS
Failure to perform certain procedures or note certain conditions may
impairr the performance of the instrument. For maximum safety and
performance, please read and follow the procedures and conditions
outlined below.
Sensor openings and water barriers must be kept clean.
Obstruction of the sensor openings and/or contamination of the water
barriers may cause readings to be lower than actual gas
concentrations.
2
Stationery Gas Monitor
W ARNINGS AND C AUTIONARY S TATEMENTS 3
C
ONFIGURATIONS 3
U
NPACKING T HE I NSTRUMENT 4
M
OUNTING & I NSTALLATION 4
W
IRING 6
W
ARM -U P AND O PERATION 7
S
ET - UP M ODE 8
Bump Testing 11
Sensor Type 11
Low Alarm Set-up 11
High Alarm Set-up 12
4-20 On/Off 12
4-20 mA Range 12
Audio Enable/Disable 13
Display On/Off 13
Display Type 14
Set Cal Gas Concentration 14
Mod Bus Address 15
Back to Normal Operation 15
A
LARMS 15
M
OD B US I NTERFACE 17
B
UMP (F UNCTION ) TESTING 17
Z
EROING 18
C
ALIBRATION 19
S
ENSOR R EPLACEMENT 21
S
PECIFICATIONS 23
R
EPLACEMENT P ARTS & A CCESSORIES 24
Replacement Parts and Accessories 24
Replacement Sensors 24
C
ALIBRATION K ITS & R EPLACEMENT C YLINERS 25
Calibration Kits 25
Replacement Cylinders for Calibration Kits 25
W
ARRANTY 26
TABLE OF CONTENTS
AirAware
™
!

54
M OUNTING & I NSTALLATION
The mounting height of the AirAware is dependent on the gas being
monitored and the source of the gas. General mounting guidelines are
as follows:
Heavier Than Air Similar To Air Lighter Than Air
Will collect in Breathing zone Will collect in
low lying areas monitoring recommended high areas
Gas 3' (1m) 3'-6' (1-2m) 3' (1m)
above floor above floor below ceiling
Ammonia (NH3) X
Carbon Monoxide(CO) X
Chlorine (Cl2) X
Chlorine Dioxide (ClO2) X
Hydrogen Chloride (HCl) X
Hydrogen Cyanide (HCN) X
Hydrogen Sulfide (H2S) X
Nitric Oxide (NO) X
Nitrogen Dioxide (NO2) X
Oxygen (O2) X
Phosphine (PH3) X
Sulfur Dioxide (SO2) X
With 5 conduit-type knockouts located around the outside edges as well as a
back plate knockout for flush mounting, the AirAware offers maximum
mounting flexibility. There is even provision for mounting on electrical
outlets with 2” and 4” (North American) centers.
U NPACKING T HE I NSTRUMENT
The shipping box should contain the following items. Account for each
item before discarding containers.
QUANTITY PART NUMBER DESCRIPTION
1 each 6810 0056-XXX AirAware Instrument
1 each 6700 1347 AirAware Instruction Manual
NOTE: Bias sensors (HCl, NH3, NO) are not installed in instruments
prior to shipment. Refer to Sensor Replacement section (page 21)
for instructions.
After unpacking, if any item listed is missing, contact either your local
distributor of Industrial Scientific products, or call Industrial Scientific
Corporation directly at 1-800-DETECTS (338-3287) in the United
States and Canada, or [phone].
To insure there is no damage to the main electronics, it is recommended that the
circuit board be removed prior to relieving a knockout or drilling through the
pilot points for the flush mount option. Extreme caution should be taken when
removing and re-installing the circuit board so as not to damage it.

All AirAware versions operate on 12-24 VDC. The Monitor
version includes a 120 VAC power pack for North
American electrical sockets (not included in the
International version) that supplies 24 VDC to the
instrument.
Once powered, the instrument will go through an automatic
self-test. During this time it will complete a full display
segment test, brief audio and visual alarm test, software
version, gas type, configuration M, C, T, CT (Note: “A” as
an indicator of optional audio alarm) and finally a live
continuous display of the gas concentration. During the
first three minutes of operation the alarms will not activate
and the 4-20 mA signal with be held at 3 mA.***
Each AirAware utilizes electrochemical sensors that may
require between 10 and 360 minutes (gas dependent) to
stabilize when initially activated. During this warm-up
period, the unit may display concentrations of gas and
possibly alarm.
During normal operation, the LED display shows:
C1O2, PH3 - 0.0 to 1.0 ppm in 0.01 ppm increments
HCN, HC1 - 0.2 to 30.0 ppm in 0.1 ppm increments
C1 - 0.2 to 50.0 ppm in 0.1 ppm increments
NO2, SO2 - 0.2 to 99.9 ppm in 0.1 ppm increments
NH3 - 4 to 200 ppm in 1 ppm increments
CO, H2S, NO - 0 to 999 ppm in 1 ppm increments
O2 - 0.0 to 30.0% by volume in 0.1% increments
*** A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
76
W ARM -U P A ND O PERATION
Connect only to Class 2 power supply through approved conduit and
enclosures in accordance with local authorities having jurisdiction.
Recommended Cable: 3 or 4 conductor (application dependent), 24 AWG,
stranded tinned copper, shielded cable Belden #9842 or equivalent.
W IRING
TOP

The AirAware™ is a very flexible gas-monitoring instrument
with many options. Listed below are the various programming
modes and procedures required to select various options.
1. In order to make programming changes, remove the
optional vanity plate (if installed) from the face of the
instrument by sliding it to the left or right.
2. Loosen the 5 Phillips head (captive) screws on the faceplate
allowing it to hinge downward to provide access to internal
or buttons. (Labeled S1 and S2.)
98
3. Press and hold both the and keys on
instrument faceplate simultaneously for 5 seconds.
"Bump" will appear in the display indicating the
instrument is now in the Set-up Mode. At this point the
alarm relays* are disabled, audio alarms* are disabled,
and the current output* locks at 3.0 mA for all gases
except oxygen, which goes to 16.0 mA until set-up is
complete. If no buttons are pressed within a 3-minute
time period, the instrument reverts to normal
operation.***
4. Pressing the key will advance forward through the
various options, while pressing the key will step
backward. The internal keys act as or buttons
(Page 8) to set the actual set-up values or parameters.
000
HI
LO
ZERO
RESET CAL
* Indication of purchase option.
** Will not appear on menu if option not purchased.
***
A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears all functions will
return to normal.
S ET - UP M ODE
Slides
Internal Buttons
-
+
Calibration
Zero/Reset
CAL
ZERO
RESET
CAL
ZERO
RESET
S1
-
S2
+
S1
-
S2

11
10
BUMP TESTING
This mode disables the audio* and visual alarms, relay
outputs*, and freezes the analog output* at 3.0 mA for all
gases except oxygen, which goes to 16.0 mA. In this
mode, the display alternates between "BUMP" and the
actual gas reading every half-second for three minutes.
Once the display returns to the normal operation the
audio* and visual alarms, relay outputs*, and current
output* will return to normal operation after an additional
three minutes.
SENSOR TYPE
Identifies sensor type currently installed in instrument.
LOW ALARM SET-UP
This adjustment affects the low alarm visual indicator, on-
board audible alarm* and low alarm relay contact*.
When in the low alarm mode, the display scrolls "LOW
ALARM XXXX" until either of the internal or
buttons are pressed to alter the setting, or 3 minutes
elapse, at which time the set-up mode is aborted and the
unit returns to normal gas readings. “XXXX” indicates the
current set point, and decimals are automatically placed as
needed. If the or buttons are pressed during this 3-
minute time, the display reverts to a continuous numeric
reading, which indicates the new alarm setting. Five
seconds after the last or keystroke, the scrolling
message commences with the newly selected setting.
* Indication of purchase option.
***
A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears, all functions
will return to normal.
Aborting the Set-up Mode is achieved at any time by pressing either the or
key to select "NORM" and allowing the unit to sit for 5 seconds. Once in
the normal run mode the alarm relays*, audio alarms* and 4-20 mA signal* will
be fully functional in 3 minutes.
* Indication of purchase option.
** Will not appear on menu if option not purchased.
***
A flashing decimal point on the lower right corner of the display will appear for 3
minutes after start-up, calibration, bump, or programming. This is an indicator
that the 4-20 mA signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears, all functions will return to normal.
MODE ACTIONS TAKEN
BUMP Disables:
• Visual alarms
• Audio alarm*
• Relay contacts*
• Freezes 4-20 mA current output*
SENSOR TYPE Display only of sensor type
LOW ALARM Set values to activate:
• Low alarm visual indicator
• On-board audible alarm*
• Relay contact #1*
HIGH ALARM Set values to activate:
High alarm visual indicator
On-board audible alarm*
Relay contact #2*
4-20 mA ON-OFF** Turn analog out put ON or OFF
4-20 mA Range** Custom scaling of 4-20 mA signal*
AUDIO ON-OFF** Enable or disable on-board audible alarm*
for gas alarms.
Note: Fail and Fault conditions will always
activate a pulsing audible alarm.
DISPLAY ON-OFF Turn display ON or OFF when “ON”
DISPLAY TYPE Select option for
• “SAFE, LOW, HIGH”
• “NUMERIC” when “ON”
When “OFF” Blank display during normal operation.
Note: Decimal point illuminated in far left
corner of display
RELAY ENABLE/DISABLE Turns Relays On/Off
SET CAL GAS Set the calibration gas value
MODBUS ADDRESS Set ModBus Address
NORM Return to normal operation mode
CAL
ZERO
RESET
S1
S2
+
S1
S2
+
S1
S2
+

13
12
Decimals are automatically placed as needed. If the or
buttons are pressed during this time, the display
reverts to a continuous numeric reading, which indicates
the changed setting. Five seconds after the last or
keystroke, the scrolling message commences with the
newly selected setting.
AUDIO ENABLE/DISABLE**
This adjustment affects on-board audible alarm.
The audio enable/disable mode specifies if the audio
indicator will activate upon alarm. If disabled, all instances
of audio activation will remain active (i.e. Fault and Fail)
except for gas alarms. When in this mode, the display
scrolls the message "AUDIO ON" or "AUDIO OFF" until
either of the internal or buttons are pressed to alter
the setting, or until a 3 minute timer expires, at which time
the set-up mode is aborted and the unit returns to normal
gas readings. If the or buttons are pressed during
this time, the display reverts to a continuous text reading
of "ON" or "OFF" which indicates the selected setting.
Five seconds after the last or keystroke the scrolling
message commences with the newly selected setting.
DISPLAY ON/OFF
Allows user to turn the digital display on or off as
required. If turned off a decimal point will be continuously
illuminated in the bottom right corner of the display to
indicate a power on condition. When
“ OFF” has been
selected and the instrument is in the normal run mode,
user access to the Set-up mode is achieved by following
Set-up procedures.
HIGH ALARM SET-UP
This adjustment affects the high alarm visual indicator, on-
board audible alarm* and high alarm relay contact*.
When in the high alarm mode, the display scrolls "HIGH
ALARM XXXX" until either of the internal or
buttons are pressed to alter the setting, or 3 minutes elapse,
at which time the set-up mode is aborted and the unit
returns to normal gas readings. "XXXX" indicates the
current set point. Decimals are automatically placed as
needed. If the or buttons are pressed during this 3-
minute time, the display reverts to a continuous numeric
reading, which indicates the new alarm setting. Five
seconds after the last or keystroke the scrolling
message commences with the newly selected setting.
4-20 ON/OFF**
Allows user to turn the 4-20 output signal on or off as required.
4-20 MA RANGE**
This adjustment affects 4-20 mA scaling.
The
“ 4-20 MA RANGE” mode specifies a gas value, from
0 up to the full-scale range, which will represent a full-
scale current loop output of 20mA. When in this mode, the
display scrolls the message "RANGE XXX" until either of
the internal or keys are pressed to alter the setting,
or until a 3 minute timer expires, at which time the set-up
modes are aborted and the unit returns to normal gas
readings. "XXX" indicates the 20 mA range.
* Indication of purchase option.
** Will not appear on menu if option not purchased.
***
A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears, all functions
will return to normal.
S1
S2
+
S1
S2
+
S1
S2
+
S1
S2
+
S1
S2
S1
S2
S1
S2
S1
S2
+
S1
S2
+

15
14
MODBUS ADDRESS
Although factory set to the last 3 digits of the instrument
serial number, the ModBus address can be user adjusted.
When in this mode, the display shows the current address
until either of the internal or buttons are pressed to
alter the setting, or until a 3 minute timer expires, at which
time the setup modes are aborted and the unit returns to
normal gas readings. If the or buttons are pressed
during this time, the display reverts to XXXX which
indicates the newly selected value. Five seconds after the
last or keystroke the scrolling message commences
with the newly selected setting.
BACK TONORMAL OPERATION
Immediately upon selecting Normal Mode, the display
reads "NORM" for 5 seconds before exiting the Set-up
mode. During this 5-second period, the user can continue
to scroll forward or backward into other modes before the
normal mode starts. After this point, both the and
keys must be pressed to re-enter the Set-up mode.
* Indication of purchase option.
A LARMS
Once the concentration of gas exceeds the preset alarm
level, the AirAware will alarm. In all versions the visual
alarm indicators will activate and the LED will flash once
per second. For units with on-board audible alarm option,*
pressing while the unit is in alarm will silence the
on-board alarm buzzer.
All alarms are non-latching; when the level of gas drops
below the alarm point, all alarms automatically switch off.
DISPLAY TYPE
This mode allows the user to select between numeric gas
concentrations or a text indication of "SAFE, LOW,
HIGH". When in this mode, the display scrolls the
message "DISPLAY TEXT" or "DISPLAY NUMERIC"
until either of the internal or buttons are pressed to
alter the setting, or until a 3 minute timer expires, at which
time the setup modes are aborted and the unit returns to
normal gas readings. If the or buttons are pressed
during this time, the display reverts to a continuous text
reading of "TEXT" or "NUM" which indicates the
selected setting. Five seconds after the last or
keystroke the scrolling message commences with the
newly selected setting.
SET CAL GAS CONCENTRATION
Although factory set (see below) the calibration gas value
can be user adjusted. When in this mode, the display
scrolls the message "CAL GAS XXXX YYY ZZZ" until
either of the internal or buttons are pressed to alter
the setting, or until a 3 minute timer expires, at which time
the setup modes are aborted and the unit returns to normal
gas readings. If the or buttons are pressed during
this time, the display reverts to XXXX which indicates the
newly selected value. Five seconds after the last or
keystroke the scrolling message commences with the
newly selected setting.
XXXX indicates the gas value
YYY indicates the unit (ppm for toxics, %VOL for
oxygen)
ZZZ indicates the gas type
STANDARD AIRAWARE CALIBRATION SETTINGS
CO - 100 ppm Cl2- 10 ppm ClO2- 1 ppm
HCl - 10 ppm HCN - 10 ppm NH3- 25 ppm
H2S - 25 ppm NO - 25 ppm O2- 21.0%
PH3- 1 ppm NO2- 5 ppm SO2 - 5 ppm
CAL
ZERO
RESET
ZERO
RESET
S1
S2
+
S1
S2
+
S1
-
S2
S1
-
S2
S1
S2
+
S1
S2
+
S1
-
S2
S1
S2
+
S1
S2
+

17
16
M OD B US I NTERFACE
The AirAware is a ModBus RTU compliant instrument.
Please consult the factory for detailed information of
ModBus registers.
B UMP ( FUNCTION ) T ESTING
Bump (function) testing is the act of applying a known
concentration of gas to the monitor and verifying that the
instrument is performing properly. There are two common
philosophies when it comes to BUMP or FUNCTION
testing.
Applying gas to the instrument while in the normal run
mode and awaiting a response within the allotted time is
easily achieved. When applying gas through the
calibration adapter, the unit should respond to 90% of the
reading within 2-3 minutes (sensor specific). At this point
all on-board and remote alarms should be activated and the
4-20 mA signal should reflect the display reading on the
instruments.
If a test of the sensor and display only is required without
the activation of on-board or external alarming devices,
selecting the
“ BUMP” option in the Set-up mode disables
all alarming functions. At this point, the alarm relays* are
disabled, audio alarms* are disabled and the current
output* locks at 3.0 mA for all gases except oxygen,
which goes to 16.0 mA. Instrument automatically returns
to normal operation.
If an instrument fails to operate properly following any
bump “functional” test, a full instrument calibration
should be performed prior to use. Refer to Section 11
(Calibration) for details.
Test gas kits for all gases, including oxygen, are available
from Industrial Scientific; see page 25 for ordering
information.
Frequent bump testing along with good record keeping will ensure optimum
performance of the AirAware.
Alarm Conditions for Different Configurations.
Although field programmable the factory alarm set points are as follows:
MONITOR CONTROL TRANSMIT CONTROL/
TRANSMIT
* Indication of purchase option.
Flashing Display
Pulsing Audio Alarm
Flashing “LOW” indicator
Low Alarm Audible Alarm
Low Alarm
High Alarm
Zero Failure
Instrument
Failure
No Sensor
Installed
Flashing “LOW” indicator
Low Alarm
relay switched
Flashing “LOW” indicator
mA signal proportional
to display
Flashing “LOW” indicator
Low Alarm relay switched
mA signal proportional
to display
Flashing “HIGH” indicator
High Alarm
relay switched
Flashing “HIGH” indicator
mA signal proportional
to display
Flashing “HIGH” indicator
Low Alarm relay switched
mA signal proportional
to display
Flashing Display
Pulsing Audio Alarm* Flashing Display Pulsing Audio Alarm
mA signal at old value
Flashing Display
Pulsing Audio Alarm
mA signal at old value
Flashing Display
Pulsing Audio Alarm Flashing Display
Pulsing Audio Alarm* Flashing Display Pulsing Audio Alarm
mA signal at 0 mA
Flashing Display
Pulsing Audio Alarm
mA signal at 0 mA
Flashing Display
Pulsing Audio Alarm Flashing Display
Pulsing Audio Alarm* mA signal at 0 mA Pulsing Audio Alarm mA signal at 0 mA
Pulsing Audio Alarm
Flashing “HIGH”
indicator
High Alarm Audible Alarm
GAS LOW ALARM HIGH ALARM
CO 35 ppm 70 ppm
Cl20.5 ppm 1.0 ppm
ClO20.3 ppm 0.5 ppm
H2S 10 ppm 20 ppm
HCl 5 ppm 10 ppm
HCN 5 ppm 10 ppm
NO 25 ppm 50 ppm
NO21 ppm 2 ppm
NH325 ppm 50 ppm
O219.5 % vol. 23.5% vol.
PH30.3 ppm 0.6 ppm
SO22 ppm 4 ppm
000
HI
LO
ZERO
RESET CAL
NON-FLAMMABLEGAS

18 19
Release the key and the zeroing process begins. At the end
of the zero process, the word "PASS" or "FAIL" is
displayed for 5 seconds along with a .25 second audible
beep, after which time the unit reverts to the normal
reading screen. An oxygen sensor will always be zeroed to
20.9%, regardless of what the span gas is set to, and no
span reserve is shown for oxygen during zeroing.
If the unit displays "FAIL" do a full calibration of the unit.
If the unit fails a full calibration the sensor may need to be
replaced. Contact Industrial Scientific Corporation for a
replacement sensor; see page 24 for ordering information.
C ALIBRATION
Industrial Scientific recommends that a full instrument
calibration be performed using a certified concentration(s)
of Industrial Scientific branded calibration gas(es)
quarterly to ensure maximum accuracy. Use of calibration
gases from manufacturers other than Industrial Scientific
may void product warranties and limit liability claims
against the manufacturer.
Calibrating the AirAware is simply applying a known
concentration of gas to the unit, and “telling” the unit to
self-adjust to read that concentration. The calibration
values are pre-programmed into the instrument in order to
simplify the procedure. For details on changing this pre-
programmed value, refer to page 14.
Z EROING
Zeroing an AirAware is the act of setting the instrument to
read either 000 ppm or 00.0 ppm (20.9 for oxygen) in a
gas/hazard-free environment. The atmosphere must be
clean and free from the target gas during the zeroing
process.
If through ventilation and other measures it is impossible
to entirely remove the target gas from your facility, bottled
“zero” gas should be applied to the instrument.
Connect the zero gas bottle, regulator, and tubing to the
calibration adapter. Connect adapter to sensor opening and
open regulator. Allow zero gas to flow for a minimum of
2 minutes.
With the
“ zero” gas still flowing to the sensor, press and
hold the key for a total of 10 seconds. During the
first 5 seconds the normal screen is still displayed. During
the next 5 seconds, the text or numeric display flashes
once per second. If the key is still held after the full 10
seconds the word “ZERO” is displayed.
000
HI
LO
ZERO
RESET CAL
NON-FLAMMABLE GAS
*** A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears, all functions
will return to normal.
STANDARD AIRAWARE CALIBRATION SETTINGS
CO - 100 ppm Cl2- 10 ppm ClO2- 1 ppm
HCl - 10 ppm HCN - 10 ppm NH3- 25 ppm
H2S - 25 ppm NO - 25 ppm O2- 21.0%
PH3- 1 ppm NO2- 5 ppm SO2 - 5 ppm
ZERO
RESET

2120
If the unit fails a second time the sensor may need to be
replaced. Contact either your local distributor of Industrial
Scientific Corporation instruments or Industrial Scientific
directly.
NOTE: Use only Industrial Scientific test gas equipment.
S ENSOR R EPLACEMENT
Occasionally, AirAware sensors will need to be replaced.
Repeated failures of zero, calibration, and bump tests can
be indications that the sensor has degraded. Replacement
sensors are available from authorized Industrial Scientific
distributors. Refer to page 24, Replacement Sensors and
Accessories, for part numbers.
To replace a sensor in the AirAware:
• Remove power from the unit.
• Remove the optional vanity plate (if installed) from the
face of the instrument by sliding it to the left or right
(page 8).
• Loosen the 5 Phillips head (captive) screws on the
faceplate allowing it to hinge downward (page 8).
• Unplug the used sensor (page 22) and discard.
• Remove the shorting clip (page 22) or small bias circuit
board from the replacement sensor, aligning the holes in
the board with the pins on the sensor; plug the new
sensor into the instrument.
• Replace cover, and reapply power.
Once powered, the display will briefly show the symbol
for the gas being monitored, then a live display of the gas
concentration. Each AirAware utilizes electrochemical
sensors that may require between 10 and 360 minutes (gas
dependent) to stabilize when initially activated. During this
warm-up period, the unit may display concentrations of
gas and possibly alarm. Allow sufficient time for the
instrument to stabilize prior to proceeding.
To calibrate the instrument:
• If necessary, connect zero air gas bottle, regulator, and
tubing to the calibration adapter.
• Press and hold the button. After 5 seconds, the
display will blink five times and “Zeroing” will appear
on the display. Release the button.***
• After the unit fiinishes auto-zeroing, it will display either
PASS or FAIL. If teh sensor passes the zeroing function,
switch gas cylinders and connect the calibration adapter
to the sensor opening and start the flow of gas to the
sensor by opening the regulator. Maintain flow of gas to
the sensor until the display indicates, “PASS XXX” or
“FAIL”. During this time the display will flash the SPAN
RESERVE value of the sensor. Once calibration is
complete, the display will flash “PASS XXX” or “FAIL.”
• If the unit indicates “PASS XXX,” document the XXX
(span reserve) value in your calibration records. Remove
calibration gas and disassemble regulator from
cylinder.***
• If the unit indicates
“ FAIL,” the display will alternate
between
“ FAIL” and actual readings. The audible alarm
will sound every 1/2 second and the 4-20 mA signal will
reflect displayed readings.***
Check the following if the unit indicates:
• “Fail”
• Calibration gas cylinder concentration matches the
pre-programmed calibration gas settings in the
“Set-up” mode.
• Calibration gas cylinder is not empty.
000
HI
LO
ZERO
RESET CAL
NON-FLAMMABLEGAS
*** A flashing decimal point on the lower right corner of the
display will appear for 3 minutes after start-up, calibration,
bump, or programming. This is an indicator that the 4-20 mA
signal is locked at 3 mA and that all alarm functions are
disabled. Once this flashing indicator clears, all functions
will return to normal.
CAL
CAL

2322
S PECIFICATIONS
SIZE:7.2" x 5.6" x 1.6" (18.29 cm x 14.22 cm x 4.06 cm)
WEIGHT:17 oz. (482 grams)
DISPLAY:4 digit high resolution bright led
RELAY RATING:Two 5-amps 30 VDC, NO and NC
ANALOG OUTPUT:4-20 mA three-wire interface
1000 ohms @ 24 VDC
500 ohms @ 12 VDC
CURRENT DRAW:125 mA @ 24 VDC
200 mA @ 12 VDC
DIGITAL OUTPUT:ModBus RTU
TEMPERATURE RANGE
OF OPERATION:-4oF to 122oF (-20oC to 50oC) Sensor Dependant
RELATIVE HUMIDITY
RANGE:15-90% for Toxics
0-99% for Oxygen
MEASURING RANGE:C1O2,PH
3- 0.0 to 1.0 ppm in 0.01 ppm increments
HCN, HC1 - 0.2 to 30.0 ppm in 0.1 ppm increments
C12, - 0.2 to 50.0 ppm in 0.1 ppm increments
NO2,SO
2- 0.2 to 99.9 in 0.1 ppm increments
NH3- 4 to 200 ppm in 1 ppm increments
CO, H2S, NO - 0 to 999 ppm in 1 ppm increments
O2- 0.0 to 30.0% by volume in 0.1% increments
POWER:12 - 24 VDC (120 VAC to 24 VDC power pack
included with Domestic North America ‘Monitor’
version only, optional item for all others)
AUDIO ALARM:85 db at 1 meter
Subject to change without notice.
Shorting Clip
Bias Board

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Industrial Scientific offers a wide selection of calibration kits and regulators
necessary for optimum AirAware performance. Call for available options
for your specific configuration.
CALIBRATION KITS
PART NO. DESCRIPTION
18102147 Ammonia Cal Kit (25 PPM 58 liter)
18100743 Carbon Monoxide Cal Kit (100 PPM 34 liter)
68100155 Chlorine Cal Kit (10 PPM 34 liter)
18102148 Hydrogen Chloride Cal Kit (10 PPM 58 liter)
18102149 Hydrogen Cyanide Cal Kit (10 PPM 58 liter)
68100122 Hydrogen Sulfide Cal Kit (25 PPM 34 liter)
68100130 Nitrogen Dioxide Cal Kit (5 PPM 34 liter)
68100221 Oxygen / Zero Air Cal Kit (20.9% O2 34 liter)
68100148 Sulfur Dioxide Cal Kit (5 PPM 34 liter)
REPLACEMENT CYLINDERS FOR CALIBRATION KITS
PART NO. DESCRIPTION
18102151 Ammonia Replacement CYL (25 PPM 58 liter)
18100701 Carbon Monoxide Replacement CYL (100 PPM 34 liter)
18105007 Chlorine Replacement CYL (10 PPM 34 liter)
18102154 Hydrogen Chloride Replacement CYL (10 PPM 58 liter)
18102152 Hydrogen Cyanide Replacement CYL (10 PPM 58 liter)
18104984 Hydrogen Sulfide Replacement CYL (25 PPM 34 liter)
18104976 Nitrogen Replacement CYL (5 PPM 34 liter)
18104059 Phosphine Replacement CYL (1 PPM 58 liter)
18104992 Sulfur Dioxide Replacement CYL (5 PPM 34 liter)
Calibration kits include gas cylinder, 0.5 LPM regulator and carry case.
Note: Calibration cup not included.
Urethane tubing required for SO2,Cl
2,NO 2,NH 3, HCl and HCN gases
*Contains 5-PPM NO2gas as a surrogate calibration standard
Industrial Scientific offers a wide selection of options necessary for
optimum AirAware performance. Supplies available for the AirAware
include external audible and visual alarms, calibration kits, vanity plates,
controllers and many more. Call for available options for your specific
configuration.
REPLACEMENT PARTS AND ACCESSORIES
PART NO. DESCRIPTION
67001198 Vanity plate (option)
67000596 Calibration adapter (adapter only)
67000604 Calibration adapter assembly (includes cal adapter, tubing
and reducer)
17106659 Replacement sensor gasket
77021897 Replacement water barrier for sensor opening
67000265 120 VAC to 24 VDC power adapter
(North American wall plug)
17099391 Nylon strain relief for AC power adapter
67001123 Replacement Faceplate Screw
67001115 Replacement Faceplate/Keypad
67001131 Replacement Faceplate Hinge Strap
REPLACEMENT SENSORS
PART NO. DESCRIPTION
17071093 Ammonia Sensor (NH3)
17051638 Carbon Monoxide Sensor (CO)
17077330 Chlorine Sensor (Cl2)
17072497 Chlorine Dioxide Sensor (ClO2)
17066374 Hydrogen Chloride Sensor (HCl)
17070186 Hydrogen Cyanide Sensor (HCN)
17051636 Hydrogen Sulfide Sensor (H2 S)
17071242 Nitric Oxide Sensor (NO)
17060591 Nitrogen Dioxide Sensor (NO2)
17050129 Oxygen Sensor (O2)
17077355 Phosphine Sensor (PH3)
17060575 Sulfur Dioxide Sensor (SO2)
R EPLACEMENT P ARTS & A CCESSORIES
C ALIBRATION K ITS & R EPLACEMENT C YLINDERS

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W ARRANTY
Industrial Scientific portable gas monitoring instruments
are warranted to be free from defects in material and
workmanship for one year from the date of purchase,
except where otherwise stated in writing in Industrial
Scientific literature accompanying the product. The above
warranty does not include sensors, battery packs, internal
pumps or filters, all of which are warranted to be free from
defects in material and workmanship for eighteen months
from the date of shipment, or one year from the date of
first use, whichever occurs first, except where otherwise
stated in writing in Industrial Scientific literature
accompanying the product.
All other Industrial Scientific products are warranted to be
free from defects in material and workmanship for a
period of eighteen (18) months from the date of shipment,
or one (1) year from the date of first use, whichever occurs
first, except where otherwise stated in writing in Industrial
Scientific literature accompanying the product.
LIMITATION OF LIABILITY
INDUSTRIAL SCIENTIFIC MAKES NO OTHER
WARRANTIES, EITHER EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR PARTICULAR PURPOSE. SHOULD THE
PRODUCT FAIL TO CONFORM TO THE ABOVE
WARRANTY, BUYER’S ONLY REMEDY AND
INDUSTRIAL SCIENTIFIC’S ONLY OBLIGATION
SHALL BE, AT INDUSTRIAL SCIENTIFIC’S SOLE
OPTION, REPLACEMENT OR REPAIR OF SUCH
NONCONFORMING GOODS OR REFUND OF THE
ORIGINAL PURCHASE PRICE OF THE
NONCONFORMING GOODS.
IN NO EVENT WILL INDUSTRIAL SCIENTIFIC BE
LIABLE FOR ANY OTHER SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES, INCLUDING
LOSS OF PROFIT OR LOSS OF USE, ARISING OUT
OF THE SALE, MANUFACTURE OR USE OF ANY
PRODUCTS SOLD HEREUNDER WHETHER SUCH
CLAIM IS PLEADED IN CONTRACT OR IN TORT,
INCLUDING STRICT LIABILITY IN TORT.
It shall be an express condition to Industrial Scientific’s
warranty that all products be carefully inspected for
damage by Buyer upon receipt, be properly calibrated for
Buyer’s particular use, and be used, repaired, and
maintained in strict accordance with the instructions set
forth in Industrial Scientific’s product literature. Repair or
maintenance by nonqualified personnel will invalidate the
warranty, as will the use of non-approved consumables or
spare parts. As with any other sophisticated product, it is
essential and a condition of Industrial Scientific’s warranty
that all personnel using the products be fully acquainted
with their use, capabilities and limitations as set forth in
the applicable product literature.
Buyer acknowledges that it alone has determined the
intended purpose and suitability of the goods purchased. It
is expressly agreed by the parties that any technical or
other advice given by Industrial Scientific with respect to
the use of the goods or services is given without charge
and at Buyer’s risk; therefore, Industrial Scientific
assumes no obligations or liability for the advice given or
results obtained.