TSI Instruments ALNOR AIRGARD 200 User manual

FUME HOOD MONITOR
ALNOR®AIRGARD®200
OWNER’S MANUAL
P/N 116670080, REV 09
SEPTEMBER 2014

iii
LIMITATION OF WARRANTY AND LIABILITY
(effective April 2014)
(For country-specific terms and conditions outside of the USA, please visit www.tsi.com.)
Seller warrants the goods, excluding software, sold hereunder, under normal use and service as
described in the operator's manual, to be free from defects in workmanship and material for 24
months, or if less, the length of time specified in the operator's manual, from the date of
shipment to the customer. This warrantyperiod is inclusive of anystatutory warranty. This
limited warrantyis subject to the following exclusions and exceptions:
a. Hot-wire or hot-film sensors used with research anemometers, and certain other components
when indicated in specifications, are warranted for 90 days from the date of shipment;
b. Pumps are warranted for hours of operation as set forth in product or operator’s manuals;
c. Parts repaired or replaced as a result of repair services are warranted to be free from defects
in workmanship and material, under normal use, for 90 days from the date of shipment;
d. Seller does not provide any warranty on finished goods manufactured by others or on any
fuses, batteries or other consumable materials. Only the original manufacturer's warranty
applies;
e. This warranty does not cover calibration requirements, and seller warrants only that the
instrument or product is properly calibrated at the time of its manufacture. Instruments
returned for calibration are not covered by this warranty;
f. This warranty is VOID if the instrument is opened by anyone other than a factory authorized
service center with the one exception where requirements set forth in the manual allow an
operator to replace consumables or perform recommended cleaning;
g. This warranty is VOID if the product has been misused, neglected, subjected to accidental or
intentional damage, or is not properly installed, maintained, or cleaned according to the
requirements of the manual.
h. Unless specifically authorized in a separate writing by Seller, Seller makes no warranty with
respect to, and shall have no liability in connection with, goods which are incorporated into
other products or equipment, or which are modified by anyperson other than Seller.
The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated
herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR
PURPOSE OR MERCHANTABILITY IS MADE. WITH RESPECT TO SELLER’S BREACH OF
THE IMPLIED WARRANTY AGAINST INFRINGEMENT, SAID WARRANTY IS LIMITED TO
CLAIMS OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY OR
INDUCED INFRINGEMENTS. BUYER’S EXCLUSIVE REMEDY SHALL BE THE RETURN OF
THE PURCHASE PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT
SELLER’S OPTION REPLACEMENT OF THE GOODS WITH NON-INFRINGING GOODS.
TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OFTHE USER OR
BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES, INJURIES,
OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS BASED ON CONTRACT,
NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) SHALL BE THE RETURN OF
GOODS TO SELLER AND THE REFUNDOF THE PURCHASE PRICE, OR, AT THE OPTION
OF SELLER, THE REPAIR OR REPLACEMENT OF THE GOODS. IN THE CASE OF
SOFTWARE, SELLER WILL REPAIR OR REPLACE DEFECTIVE SOFTWARE OR IF
UNABLE TO DO SO, WILL REFUND THE PURCHASE PRICE OF THE SOFTWARE. IN NO
EVENT SHALL SELLER BE LIABLE FOR LOST PROFITS, BUSINESS INTERRUPTION, OR
ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL
NOT BE RESPONSIBLE FOR INSTALLATION, DISMANTLING OR REINSTALLATION
COSTS OR CHARGES. No Action, regardless of form, may be brought against Seller more
than 12 months after a cause of action has accrued. The goods returned under warranty to
Seller's factory shall be at Buyer's risk of loss, and will be returned, if at all, at Seller's risk of
loss.
Buyer and all users are deemed to have accepted this LIMITATION OFWARRANTY AND
LIABILITY, which contains the complete and exclusive limited warrantyof Seller. This
LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its terms
waived, except bywriting signed by an Officer of Seller.
Service Policy
Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our
customers, our service policyis designed to give prompt attention to any problems. If any mal-
function is discovered, please contact your nearest sales office or representative, or call TSI’s
Customer Service department at 1-800-874-2811 (USA) or [phone].

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1
TABLE OF CONTENTS
General Description.........................................................2
Setup..................................................................................3
Installation.........................................................................5
General ...........................................................................5
Tools Required................................................................5
Procedure........................................................................5
Simplified Installation ......................................................7
General Installation.........................................................7
Procedure........................................................................7
Calibration.........................................................................8
Equipment.......................................................................8
Procedure........................................................................8
Step by Step Operation..................................................10
Alarm Acknowledgment ................................................10
Alarm Test.....................................................................10
Horn Disable (from keypad)..........................................10
Appendix A:
Maintenance & Troubleshooting ..................................11
Service Policy.................................................................12
Ship To..........................................................................12

2
Figure 1:
Front view of instrument
General Description
The AirGard®200 monitor is
designed to continuously
monitor air flow through fume
hoods. This permanently
installed device provides both
visual and audible alarms to
alert the user of abnormal air
flow conditions after the
instrument is calibrated for the
particular installation. A green
indicator on the front of the
monitor indicates normal flow
conditions. When flow
conditions lower than the
setpoint are encountered, a red
indicator is activated along with
an audible horn. A test button is
provided at the front of the
monitor to allow the user to check the operation of the alarm.
See Table 1 for a description of each key function located on the
front of the monitor.
Note: For proper operation of the instrument, you must install
and calibrate the AirGard®200 monitor. The entire manual
should be read first before proceeding with the actual installation
and calibration of the instrument.
1. MOUNTING SCREWS
Two screws secure the monitor to the back plate
which is then secured to the fume hood.
2. AIR INLET
A portion of the air coming into the hood passes
through the air inlet and across the flow sensors.
3. SETPOINT ADJUST
This potentiometer is used to set low flow alarm
setpoint.
4. NORMAL FLOW
INDICATOR
This green indicator is illuminated when air flow is
greater than the setpoint.
5. ALARM INDICATOR
This red indicator is illuminated approximately six
seconds after air flow is less than the setpoint.
6. TEST/RESET BUTTON
If no alarm condition is present this button will
cause the red indicator to be illuminated and will
also cause the horn to sound. If an alarm is
present, this button will silence the alarm.
7. POWER ON
INDICATOR
This light stays on to indicate power is on.
Table 1: Description of Features on Front of Monitor

3
Setup
The AirGard®200 fume hood monitor
contains several configuration
options. Two connectors provide
access to remote control devices and
firmware configuration jumpers.
Observe the back of the monitor.
Locate the two connectors at the left-
center of the printed circuit board
marked J3 and JP1. J3 is a polarized
header for connection to a remote
horn disable switch and a set of
single-pole single-throw (SPST) relay
contacts. JP1 is a four-pole double-
row header in which shorting
jumpers may be inserted to configure
firmware options. Figure 2 illustrates
these connectors.
Poles 1 and 2 of J3 are the relay
contacts. Refer to specification
section to determine the relay
contact ratings before making
connections to the relay. The relay
contacts may be used to trigger a
remote alarm device. The default
configuration of the contacts are
Normally Closed (NC) during normal air flow and Normally Open
(NO) during low-flow alarm conditions.
Poles 3 and 4 of J3 may be connected to a remote single-pole
single-throw (SPST) switch to silence the horn. Closing the
switch will silence the horn only during an alarm condition.
Opening the switch restores the horn during an alarm condition.
It is recommended that this feature be used to disable the horn
for night-time operation or fume hood exhaust motor shut-down
periods.
Refer to the Step-by-Step Operation section for the Horn Disable
from keypad feature.

4
Pole 1 of JP1 is used to select the relay configuration. Without
the jumper installed, the relay is Normally Closed (NC) during
normal air flow and Normally Open (NO) during an alarm
condition. Installing a shorting jumper across pole 1 will cause
the relay to be Normally Open (NO) during normal air flow and
Normally Closed (NC) during an alarm condition. Install this
jumper only when the monitor is powered down. Insertion or
removal of this jumper while the monitor is powered up will not
have any effect on the relay configuration.
Pole 2 of JP1 is used to select the alarm-to-normal transition
delay option. Without the jumper installed, the transition period
from alarm to normal occurs in less than one second. Installing a
shorting jumper across pole 2 enables a nominal five-second
delay before the alarm clears. Install this jumper only when the
monitor is powered down. Insertion or removal of this jumper
while the monitor is powered up will not have any effect on the
delay configuration.
Pole 3 of JP1 is used to permanently silence the horn. Note that
this pole is a parallel connection to poles 3 and 4 of J3. Inserting
the shorting jumper will silence the horn during an alarm
condition. It is recommended that this feature be used to
permanently disable the horn if the relay contacts are to be used
to trigger an alternate horn.
Pole 4 of JP1 is used to select either a horn disable or an alarm
input configuration. Inserting a shorting jumper activates the
alarm input option. The switch should have normally open
contacts and be connected to poles 3 and 4 of J3. Switch
closure will activate the fume hood monitor alarm.
Note: By selecting this option, the horn disable configuration
described previously is not possible. A shorting jumper cannot
be inserted across both poles 3 and 4 of JP1 or a continuous
alarm will occur.

5
Installation
General
Installation of the AirGard®200
monitor generally requires the
fume hood to have a cut out
section as shown in Figure 3.
To monitor face velocity, the air
outlet port at the back of the
AirGard®200 monitor is
connected to the sidewall inside the fume hood as shown in
Figure 4. A flexible hose is used to attach the air outlet port to
the interior of the hood using a sidewall adapter.
WARNING
When using tools, always wear proper eye protection. Also, all
necessary precautions must be observed when installing or
making repairs in the vicinity of electrical equipment.
Tools Required
1. Electric drill
2. Electric saw or tool for cutting sheet metal
3. Drill bit size 2.5 mm (.104")
4. Phillips head screw driver
5. Flat head screw drivers with 3 mm and 6 mm blade widths
6. Tape measure
7. Eye protection
Note: If the monitor is to be installed in a hood with
Hardiboard™ fiber-cement side panels or similar material, use
special drill bits designed for glass and other hard, abrasive
materials.
Procedure
Step 1: Use the template enclosed with the AirGard®200
monitor to cut out an area on the fascia of the hood. The
template shows the proper mounting dimensions.
Figure 3:
Front view of fascia

6
WARNING
Older hoods may contain asbestos. Always take special
precautions when dealing with this material.
Figure 4:
Back view of fascia
Step 2: Drill 4 mounting holes in the
fascia, 2.5 mm diameter as shown on
the template.
Step 3: Snap in the snap bushing
supplied onto the hole used for the
power connection in the back enclosure
and mount in the cut out on the fascia
with 4 screws supplied. See Figure 3.
Step 4: Drill a 13 mm hole in the
sidewall of the fume hood approximately
15 cm behind the sash and even with its
bottom when fully open. See Figure 4.
Step 5: Insert the plastic sidewall
adapter (supplied) from the inside of the
hood and lock with plastic lock ring
(supplied). See Figure 4.
Step 6: Slip one end of the air hose on the end of the plastic
sidewall tube adapter and insert the other end through the back
enclosure.
Step 7: Plug the power adapter into the voltage mains. Insert the
other end of the power adapter through the snap bushing hole in
the back of the enclosure.
Step 8: Connect the power cable to the terminal block. When
connecting to DC current, the J1-1 terminal is positive (+) and
the J1-2 terminal is negative (-).
Step 9: Connect the loose end of the air flow hose (sticking out
of the back enclosure) to the air outlet port on the back of the
front panel assembly.
Step 10: Feed the air flow hose and the power wire back
through their holes until the front panel assembly mounts on the
back enclosure. Install the two mounting screws (supplied).
This completes the first part of the installation of the AirGard®
200 monitor. An installation involving surface face mounting is
described in the following Simplified Installation section.

7
Simplified Installation
General Installation
The simplified installation eliminates the need to cut a hole for
the back enclosure. Refer to the Installation section for proper
tools. A 19 mm (3/4 in.) drill will also be required to create an
opening for the air output port and the power cord.
Procedure
Step 1: Drill two mounting holes in the back of the back
enclosure and in two matching places on the fascia of the fume
hood; then mount the back enclosure with 2 of the 4 screws
provided.
Step 2: Use the back enclosure as a guide to drill two 19 mm
(3/4 in.) holes for the air output port and the power cord.
Continue with step 3 in the Installation section.

8
Calibration
Field calibration must be performed since each hood installation
is unique.
WARNING
Calibration of this instrument should only be performed by
qualified personnel. Proper guidelines for monitoring any
ventilation apparatus are established on the basis of toxicity or
hazards of the materials used, or the operation conducted within
the ventilation apparatus. Personnel calibrating the AirGard®200
monitor must be completely aware of the regulations and
guidelines specific to their application.
Equipment
1. Calibrated thermoanemometer (TSI Model 9535, Alnor
AVM430, or equivalent).
2. Small screwdriver with a 1/8" wide flat tip.
Procedure
Step 1: Double check installation to ascertain that the AirGard®
200 monitor, power supply and any ancillary parts are properly
installed.
Step 2: Allow 20 minutes for the monitor to warm up.
Step 3: Determine the low flow setpoint. This is the value of
where the monitor will first indicate a low flow condition. The red
indicator will be illuminated for this value. Refer to facility’s
Industrial Hygiene Officer for the proper setpoint. For this
example, assume the indicator is to be illuminated when the flow
is 70 fpm.
Step 4: Adjust fume hood air flow to the low flow setpoint (as
described in Step 3). One method to lower the face velocity of
the hood is to close the volume damper (if available) in the
ductwork.

9
WARNING
This method is only used as a temporary condition to set the low
flow point. Make sure air flow is restored to proper level after
calibration.
Step 5: Using a properly calibrated thermoanemometer,
determine the velocity through the face of the hood by taking a
detailed velocity traverse. Divide the face area of the hood into
equal partitions. One reading per square foot of face area is
recommended for an accurate traverse. Compute the average
velocity for this area. For this example, assume that the traverse
resulted in an average velocity of 70 fpm.
Step 6: If the red indicator is illuminated, slowly turn the
adjustment screw counterclockwise until the green indicator
illuminates. If the green indicator is illuminated, slowly turn the
adjustment screw clockwise until the red indicator illuminates;
now slowly turn the adjustment screw counterclockwise until the
green indicator illuminates. It is important that these adjustments
be done in small increments, at intervals of about ten seconds
each, to allow for the delayed reaction of the alarm.
Step 7: Restore fume hood air flow to a normal level.

10
Step-By-Step Operation
Alarm Acknowledgment
The horn and red indicator will turn on approximately six
seconds after an alarm condition is detected. To mute the horn,
press and release the TEST/RESET button. Note that after an
alarm condition has been detected, the red indicator will stay on.
The horn will remain muted until air flow is restored to normal
levels.
Alarm Test
When no alarm condition is present, the alarm can be tested by
pressing the TEST/RESET button. While the button is pressed,
the indicator and horn will be activated.
Horn Disable (from keypad)
Under any operating condition, the horn may be disabled by
pressing the keypad for more than 5 seconds. The monitor will
continue to drive the appropriate LEDs at a flash rate of 2 pulses
per second. The horn will stay in the disabled mode until either
of the following two conditions occur:
• a single, momentary press of the keypad
• power to the monitor goes off and then back on.
The relay output will still be active with its contacts closed or
open depending on the current flow conditions.

11
APPENDIX A: Maintenance & Troubleshooting
Maintenance
The outside of the AirGard®200 monitor may be wiped clean
with mild soap (dish washing detergent) and water on a damp
cloth to remove finger marks, oils or residue. Do not use
abrasives or solvents. Do not immerse the monitor or allow
liquids to enter the case. Dry the monitor thoroughly after
cleaning.
Troubleshooting
Symptom
Check
NO INDICATORS
Power supply not plugged into AC
supply. Plug in power supply. Power
supply cable not properly terminated into
terminal block.
NO AUDIBLE ALARM
Horn has been silenced using the
TEST/RESET button. Alarm condition
must clear before horn may be re-
activated. J3 poles 3 and 4 may be
closed. Pole 3 of JP1 may have shorting
jumper unintentionally installed. If
permanent horn silence is not desired,
disconnect power, remove pole 3
shorting jumper and reconnect power.
WRONG ALARM
SETPOINT
Potentiometer was not properly adjusted.
Repeat calibration steps outlined in
Calibration section.
CONTINUOUS ALARM
Blower speed has changed. Adjust if
required. Check calibration using
traverse technique. Recalibrate monitor
as instructed in Calibration section of
manual if required. Shunts are in both
positions 3 and 4 of JP1. See Setup
section.
HORN SILENCE WILL
NOT STAY ON
An alarm condition must be continuously
present before the horn can be silenced.
If flow conditions fluctuate near the alarm
setpoint, the alarm will automatically
reset itself. Action should be taken to
bring fume hood air flow to proper
condition, or recalibrate the alarm
setpoint.

12
Service Policy
Knowing that inoperative or defective instruments are as
detrimental to TSI as they are to our customers, our service
policy is designed to give prompt attention to all service
requests. If any malfunction is discovered, please contact your
nearest sales office or representative, or call TSI’s Customer
Service department at [phone] (U.S. and Canada only).
Ship to:
TSI Incorporated
Alnor Products
500 Cardigan Road
Shoreview, MN 55126 USA
Toll-Free [phone]
Telephone [phone]
Fax [phone]
Email: [email protected]
www.alnor.com

AIRGARD®200 MONITOR SPECIFICATIONS
Instrument Dimensions
Front 3.25" x 4.75" x 0.5"
(8.25 cm x 12 cm x 1.3 cm)
Cut-out 2.58" x 4.5" (6.5 cm x 11.5 cm)
Enclosure Depth 1.34" (3.4 cm)
Instrument Weight 5 oz (142 grams)
Shipping Weight 1 lb 6 oz (625 grams)
Green Indicator 0.75" x 0.5" (1.9 x 1.3 cm)
Red Indicator 0.75" x 0.5" (1.9 x 1.3 cm)
Audible Horn 85 dB @ 4" (10 cm)
Alarm Setpoint Set point 80 fpm recommended
Operating Temperature 55°F to 86°F (13°C to 30°C), 5% to
95% RH, non-condensing
Storage Temperature -40°F to 150°F (-40°C to 65°C),
5% to 95% RH, non-condensing
Nominal Input Voltage 12.0 ± 1.0VDC or 9.0 ± 0.5VAC
Nominal Input Current 0.12ADC @ 12VDC input
Transformer Specification 120VAC ± 10%. 60 Hz input
9VAC nominal output. 0.50A max.
Relay Contacts 1.2A @ 200VDC max.
Monitor with 24V Input Module
(Factory Installed)
Nominal Input Voltage 22.0 ± 4.0VDC or 24.0 ± 6.0VAC
Nominal Input Current 0.12ADC @ 22.0VDC input

Alnor Products, TSI Incorporated
Visit our website www.alnor.com for more information.
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P/N 116670080 Rev 09 ©2014 TSI Incorporated Printed in U.S.A.