Alnor AVM410 Operation manual

Ventilation Testing
Air Velocity Meter
Alnor®Model AVM410
AIRFLOWTM Model TA410
Operation and Service Manual

Copyright©
TSI Incorporated / March 2007 / All rights reserved.
Address
TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA
Fax No.
[phone]
LIMITATION OF WARRANTY AND LIABILITY (effective July 2000)
Seller warrants the goods sold hereunder, under normal use and service as described in the
operator's manual, shall be free from defects in workmanship and material for twenty-four (24)
months, or the length of time specified in the operator's manual, from the date of shipment to the
customer. This warranty period is inclusive of any statutory warranty. This limited warranty is
subject to the following exclusions:
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. 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.
c. 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.
d. 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 any person 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.
TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE 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 REFUND OF THE PURCHASE
PRICE, OR, AT THE OPTION OF SELLER, THE REPAIR OR REPLACEMENT OF THE
GOODS. IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL,
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 OF WARRANTY AND
LIABILITY, which contains the complete and exclusive limited warranty of Seller. This
LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its terms
waived, except by writing 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 policy is designed to give prompt attention to any problems. If any
malfunction is discovered, please contact your nearest sales office or representative, or call
Customer Service department at [phone] (UK), [phone] (USA), or (1) 651-
490-2811 (International).

iii
CONTENTS
CHAPTER 1 UNPACKING AND PARTS IDENTIFICATION ............ 1
CHAPTER 2 SETTING-UP.................................................................3
Supplying Power to the Alnor AVM410/AIRFLOW TA410 ................ 3
Installing the Batteries ...............................................................3
Using The Telescoping Probe ........................................................3
Extending The Probe.................................................................3
Retracting The Probe ................................................................3
CHAPTER 3 OPERATION .................................................................5
Keypad Functions ...........................................................................5
CHAPTER 4 MAINTENANCE............................................................7
Recalibration...................................................................................7
Cases.............................................................................................. 7
Storage ...........................................................................................7
CHAPTER 5 TROUBLESHOOTING.................................................. 9
APPENDIX A SPECIFICATIONS.....................................................11

1
Chapter 1
Unpacking and Parts Identification
Carefully unpack the instrument and accessories from the shipping
container. Check the individual parts against the list of components below. If
anything is missing or damaged, notify TSI immediately.
1. Carrying case
2. Instrument

3
Chapter 2
Setting-up
Supplying Power to the Alnor AVM410/AIRFLOW TA410
The Alnor AVM410/AIRFLOW TA410 is powered with four size AA
batteries.
Installing the Batteries
Insert four AA batteries as indicated by the diagram located on the
inside of the battery compartment. The Alnor AVM410/AIRFLOW
TA410 is designed to operate with either alkaline or NiMH rechargeable
batteries, although it will not recharge NiMH batteries. Battery life will
be shorter if NiMH batteries are used. Carbon-zinc batteries are not
recommended because of the danger of battery acid leakage.
Using the Telescoping Probe
The telescoping probe contains the velocity, temperature, and humidity
sensors. When using the probe, make sure the sensor window is fully
exposed and the orientation dimple is facing upstream.
NOTE: For temperature measurements, make sure that at least 3 inches
(7.5 cm) of the probe is in the flow to allow the temperature sensor to be in
the air stream.
Extending the Probe
To extend the probe, hold the handle in one hand while pulling on the
probe tip with the other hand. Do not hold the cable while extending the
probe as this prevents the probe from extending.
Retracting the Probe
To retract the probe, hold the handle in one hand while gently pushing
on the probe tip with the other hand. If you feel the probe antenna
binding, pull gently on the probe cable until the smallest antenna section
is retracted. Collapse the rest of the antenna by pressing the probe tip.

5
Chapter 3
Operation
Keypad Functions
ON/OFF Key Press to turn the Alnor AVM410/AIRFLOW TA410
on and off. During the power up sequence the
display will show the following: Model Number,
Serial Number, Software Revision, and Last Date
Calibrated.
ft/min / m/s Key Pressing this key changes the display to read air
velocity.
°C / °F Key Pressing this key changes the display to read
temperature.
Changing Units To change units, first put the desired measurement
(air velocity or temperature) on the display. Then
press and hold the left, unlabelled key for five
seconds. Finally, use the ST and ENTER key to
select the units.

7
Chapter 4
Maintenance
The Alnor AVM410/AIRFLOW TA410 requires very little maintenance to
keep it performing well.
Recalibration
To maintain a high degree of accuracy in your measurements, we
recommend that you return your Alnor AVM410/AIRFLOW TA410 to TSI
for annual recalibration. Please contact one of TSI’s offices or your local
distributor to make service arrangements and to receive a Return Material
Authorization (RMA) number. To fill out an online RMA form, visit TSI’s
website at http://service.tsi.com.
U.S. & International UK
TSI Incorporated TSI Instruments Ltd.
Alnor Products Lancaster Road
500 Cardigan Road Cressex Business Park
Shoreview MN 55126-3996 High Wycombe
Tel: [phone] Buckinghamshire
[phone] HP12 3QP England
Fax: [phone] Tel: [phone]
Fax: [phone]
Cases
If the instrument case or storage case needs cleaning, wipe it off with a soft
cloth and isopropyl alcohol or a mild detergent. Never immerse the Alnor
AVM410/AIRFLOW TA410. If the enclosure of the Alnor AVM410/
AIRFLOW TA410 becomes broken, it must be replaced immediately to
prevent access to hazardous voltage.
Storage
Remove the batteries when storing the unit for more than one month to
prevent damage due to battery leakage.

9
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Alnor AVM410/AIRFLOW
TA410. If your symptom is not listed, or if none of the solutions solves your
problem, please contact TSI.
Table 5-1: Troubleshooting the Alnor AVM410/AIRFLOW TA410
Symptom Possible Causes Corrective Action
No Display Unit not turned on Switch unit on.
Low or dead batteries Replace batteries or plug
in AC adaptor.
Dirty battery contacts Clean the battery
contacts.
Velocity reading
fluctuates unstable
Fluctuating flow Reposition probe in
less-turbulent flow
Instrument Error
message appears
Fault in instrument Factory service required
on instrument.
WARNING!
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in Appendix A, Specifications.

11
Appendix A
Specifications
Specifications are subject to change without notice.
Velocity:
Range: 0 to 9999 ft/min (0 to 50 m/s)
Accuracy1&2: ±3% of reading or ±3 ft/min (±0.015 m/s),
whichever is greater
Resolution: 1 ft/min (0.01 m/s)
Temperature:
Range: 14 to 140°F (-10 to 60°C)
Accuracy3: ±0.5°F (±0.3°C)
Resolution: 0.1°F (0.1°C)
Instrument Temperature Range:
Operating (Electronics): 40 to 113°F (5 to 45°C)
Operating (Probe): 14 to 140°F (-10 to 60°C)
Storage: -4 to 140°F (-20 to 60°C)
Instrument Operating Conditions:
Altitude up to 4000 meters
Relative humidity up to 80% RH, non-condensing
Pollution degree 1 in accordance with IEC 664
Transient over voltage category II
External Meter Dimensions:
4.2 in. ×7.2 in. ×1.5 in. (10.7 cm ×18.3 cm ×3.8 cm)
Meter Weight:
Weight With Batteries: 0.6 lbs (0.27 kg)
Meter Display Dimensions:
4-digit LCD, 0.6 inches (15 mm) digit height
Power Requirements:
Four AA-size batteries (included)
1Temperature compensated over an air temperature range of 40 to 150°F (5 to 65°C).
2The accuracy statement of ±3.0% of reading or ±3 ft/min (±0.015 m/s), whichever is greater,
begins at 30 ft/min through 9999 ft/min (0.15 m/s through 50 m/s).
3Accuracy with instrument case at 77°F (25°C), add uncertainty of 0.05°F/°F (0.03°C/°C) for
change in instrument temperature.

TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126 USA
Toll Free [phone]
Telephone [phone]
Fax: [phone]
E-mail: [email protected]
Web: www.alnor.com
TSI Instruments Ltd.
Lancaster Road
Cressex Business Park
High Wycombe
Buckinghamshire
HP12 3QP England
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Web: www.airflowinstruments.co.uk
France Tel: [phone] E-mail: [email protected] Website: www.tsiinc.fr
Germany Tel: [phone] E-mail: [email protected] Website: www.tsiinc.de
Sweden Tel: [phone] E-mail: [email protected] Website: www.tsi.se
Quality Assured to ISO 9001:2000
Part No. 1980575 Rev. A
Copyright © 2007 by TSI Incorporated