AIR VELOCITY METER
ALNOR® MODEL
AVM440/AVM440A
AIRFLOW™ INSTRUMENTS
MODEL TA440/TA440A
OPERATION AND SERVICE MANUAL
P/N 1980584, REV H
NOVEMBER 2020
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i
Copyright
TSI Incorporated / 2007-2020 / All rights reserved.
Limitation Of Warranty And Liability (effective February 2015)
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 warranty period is inclusive of
any statutory warranty. This limited warranty is 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. 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. 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 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
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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 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
Trademarks
TSI, the TSI logo, Alnor, Airflow Instruments, and LogDat2 are registered trademarks
and trademarks of TSI Incorporated in the United States and may be protected under
other country’s trademark registrations.
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iii
CONTENTS
CHAPTER 1 UNPACKING AND PARTS IDENTIFICATION ............ 1
CHAPTER 2 SETTING-UP ................................................................. 3
Supplying Power to the Alnor AVM440/Airflow
Instruments TA440 ......................................................................... 3
Installing the Batteries ............................................................... 3
Using the Optional AC Adapter ................................................. 3
Using the Telescoping Probe ......................................................... 3
Extending the Probe .................................................................. 3
Retracting the Probe.................................................................. 3
Connecting to a Computer .............................................................. 4
CHAPTER 3 OPERATION ................................................................. 5
Keypad Functions ........................................................................... 5
Common Terms .............................................................................. 5
Menus ............................................................................................. 6
DISPLAY SETUP ................................................................................. 6
SETTINGS ......................................................................................... 6
FLOW SET UP .................................................................................... 6
ACTUAL/STANDARD SETUP ................................................................ 6
DATA LOGGING ................................................................................. 7
Measurements ........................................................................... 7
Log Mode/Log Settings ............................................................. 7
Delete Data ................................................................................ 7
% Memory ................................................................................. 7
LogDat2™ Downloading Software .................................................. 8
CHAPTER 4 MAINTENANCE ............................................................ 9
Recalibration ................................................................................... 9
Cases .............................................................................................. 9
Storage ........................................................................................... 9
CHAPTER 5 TROUBLESHOOTING ................................................ 11
APPENDIX A SPECIFICATIONS ..................................................... 13
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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® Incorporated immediately.
1. Carrying case
2. Instrument
3. USB cable
4. CD-ROM with downloading software
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3
Chapter 2
Setting-up
Supplying Power to the Alnor® AVM440/Airflow™ Instruments TA440
The Alnor® AVM440/Airflow™ Instruments TA440 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® AVM440/
Airflow™ Instruments TA440 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 Optional AC Adapter
When using the AC adapter, the batteries (if installed) will be
bypassed. Be sure to provide the correct voltage and frequency,
which is marked on the back of the AC adapter. The AC adapter
will not recharge the batteries.
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.
N O T E
For temperature and humidity measurements, make sure that at
least 3 inches (7.5 cm) of the probe is in the flow to allow the
temperature and humidity sensors 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 pulling
gently on the probe cable with the other hand.
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4 Chapter 2
Connecting to a Computer
Use the Computer Interface USB Cable provided with the
Alnor® AVM440/Airflow™ Instruments TA440 to connect the
instrument to a computer for downloading stored data.
For more information on how to download stored data see Chapter 3
section titled LogDat2™ Downloading Software.
C A U T I O N
This symbol is used to indicate that the data port of the
Alnor® AVM440/Airflow™ Instruments TA440 IS NOT
intended for connection to a public telecommunications
network. Connect the USB data port only to another
USB port.
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5
Chapter 3
Operation
Keypad Functions
ON/OFF Key
Press to turn the Alnor® AVM440/TA440 on
and off. During the power up sequence the
display will show the following: Model Number,
Serial Number, Software Revision and Last
Date Calibrated.
Arrow () Keys
Press to scroll through choices while setting a
parameter.
(Enter) Key
Press to accept a value or condition.
Arrow ( or ) and
Menu Soft Keys
Press arrow keys to change choices while
setting a parameter. Press the Menu soft key to
select the Menu selections, which are Display
Setup, Settings, Flow Setup, Actual/Std Set up,
Data Logging and Calibration.
Common Terms
In this manual there are several terms that are used in different
places. The following is a brief explanation of the meanings of
those terms.
Sample
Consists of all of the measurement parameters stored at
the same time.
Test ID
A group of samples. The statistics (average, minimum,
maximum, and count) are calculated for each test ID. The
maximum number of test IDs is 100.
Time
Constant
The time constant is an averaging period. It is used to
dampen the display. If you are experiencing
fluctuating flows, a longer time constant will slow
down those fluctuations. The display will update every
second, but the displayed reading will be the average
over the last time constant period. For example, if the
time constant is 10 seconds, the display will update
every second, but the displayed reading will be the
average from the last 10 seconds. This is also
referred to as a “moving average”.
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6 Chapter 3
Menus
DISPLAY SETUP
Display setup menu is where you will setup the desired parameters to
be displayed on the running screen. With a parameter highlighted you
can then use the ON soft key to have it show up on the running
screen or select the OFF soft key to turn off the parameter. Use
PRIMARY soft key to have a parameter show up on the running
screen in a larger display. Only one parameter can be selected as a
primary, and up to 2 secondary parameters can be selected at one
time.
SETTINGS
Settings menu is where you can set the general settings. These
include Language, Beeper, Select Units, Time Constant, Contrast,
Set Time, Set Date, Time Format, Date Format, Number Format,
Backlight and Auto Off. Use the or soft keys to scroll through the
settings for each option and use the key to accept settings.
FLOW SET UP
In Flow Setup mode, there are four types: Round Duct, Rectangle Duct,
Duct Area, and Horn. Use the or soft keys to scroll through the
types and then press the key to accept the desired type. To
change the value, highlight the Enter Settings option and press the
key. Use the instructions below to change the value of the type that
you selected.
NO T E
The horn numbers are the models of the horns. For example, 100
refers to a horn model number AM 100. Only horns with Model
numbers as follows can be used with this function: AM 100, AM 300,
AM 600 and AM 1200. If a horn model number is chosen, the
instrument will return to measuring mode and use a preprogrammed
curve to calculate flow rate from velocity.
ACTUAL/STANDARD SETUP
Choose Actual/Standard measurements and parameters in the
Act/Std Setup menu. Within this menu, the user can also select
Standard Temperature, Standard Pressure and a source for the
actual temperature. The actual barometric pressure must be entered
to convert air velocity and volume measurements to actual conditions.
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Operation 7
DATA LOGGING
Measurements
Measurements to be logged are independent of measurements
on the display, and must therefore be selected under
DATA LOGGING → Measurements.
Log Mode/Log Settings
You can set Log Mode to Manual, Auto-save, or Cont-key.
• Manual mode does not automatically save data, but instead
prompts the user to save a sample.
• In Auto-save mode, the user manually takes samples that are
automatically logged.
• In Cont-key mode, the user starts taking readings and logging
by pressing the key. The instrument will continue taking
measurements until the key is pressed again.
• Auto-save and Cont-Key modes have the following additional
Log Settings:
Mode
Log Settings
Auto-save
Log Interval
Cont-key
Log Interval
• Pressing the keys simultaneously will lock the keypad to
prevent unauthorized adjustments to the instruments. To
unlock the keypad, press the keys simultaneously.
Delete Data
Use this to delete all data, delete test or delete sample.
% Memory
This option displays the memory available. Delete All, under
Delete Data, will clear memory and reset the memory available.
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8 Chapter 3
LogDat2™ Downloading Software
The Alnor® AVM440/Airflow™ Instruments TA440 comes with special
software called LogDat2™ Downloading Software, which is designed
to provide you with maximum flexibility and power. To install this
software on your computer, follow the instructions on the label of the
LogDat2™ CD-ROM.
To download data from the Alnor® AVM440/Airflow™ TA440, connect
the supplied computer interface USB cable to the Alnor®
AVM440/Airflow™ Instruments TA440 and to a computer USB port.
Then run the LogDat2™ downloading software. Within the LogDat2™
software, either select the tests to be downloaded or double-click on
a test to open it.
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9
Chapter 4
Maintenance
The Alnor® AVM440/Airflow™ Instruments TA440 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® AVM440/Airflow™
Instruments TA440 to TSI® Incorporated for annual recalibration.
Please contact one of TSI’s offices or your local distributor to make
service arrangements and to receive a “Service Request” number.
U.S. & International
UK
TSI Incorporated
TSI Instruments Ltd.
Alnor® Products
Stirling Road
500 Cardigan Road
Cressex Business Park
Shoreview MN 55126-3996
High Wycombe
Tel: (800) 680-1220
Buckinghamshire
(651) 490-2860
HP12 3ST United Kingdom
Fax: (651) 490-3824
Tel: +44 (0) 149 4 459200
The Alnor® AVM440/Airflow™ Instruments TA440 can also be
recalibrated in the field using the CALIBRATION menu. These field
adjustments are intended to make minor changes in calibration to
match a user's calibration standards. The field adjustment IS NOT
intended as a complete calibration capability. For complete, multiplepoint calibration and certification, the instrument must be returned to
the factory.
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® AVM440/Airflow™ Instruments TA440. If the enclosure of
the Alnor® AVM440/Airflow™ Instruments TA440 or the AC adapter
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.
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11
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended
solutions for common problems encountered with the Alnor®
AVM440/Airflow™ Instruments TA440. If your symptom is not listed,
or if none of the solutions solves your problem, please contact TSI®.
Table 5-1: Troubleshooting the Alnor® AVM440/
Airflow™ Instruments TA440
Symptom
Possible Causes
Corrective Action
No Display
Unit not turned on
Switch unit on.
Low or dead batteries
Replace batteries or
plug in AC adapter.
Dirty battery contacts
Clean the battery
contacts.
Velocity reading
fluctuates /
unstable
Fluctuating flow
Reposition probe in
less-turbulent section
or use longer time
constant.
Instrument Error
message appears
Memory is full
Download data if
desired, then
DELETE ALL memory.
Fault in instrument
Factory service
required on instrument.
W A R N I N G !
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in Appendix A, Specifications.
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13
Appendix A
Specifications
Specifications are subject to change without notice.
Velocity Probe:
Range: .............. 0 to 6000 ft/min (0 to 30 m/s)
Accuracy
1&2
: ..... ±3% of reading or ±3 ft/min (±0.015 m/s),
whichever is greater
Resolution: ....... 1 ft/min (0.01 m/s)
Duct Size:
Range: .............. 1.0 to 500 inches in increments of 0.1 in.
(2.5 to 1270 cm in increments of 0.1 cm)
Volumetric Flow Rate:
Range: .............. Actual range is a function of actual velocity, and duct
size
Temperature from Velocity Probe:
Range: .............. 14 to 140°F (-10 to 60°C)
Accuracy3: ........ ±0.5°F (±0.3°C)
Resolution: ....... 0.1°F (0.1°C)
Relative Humidity from Velocity Probe:
Range: .............. 5 to 95% RH
Accuracy4: ........ ±3% RH
Resolution: ....... 0.1% RH
Wet Bulb Temperature from Velocity Probe:
Range: .............. 40 to 140°F (5 to 60°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 When Using the Optional
AC Adapter:
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
Data Storage Capabilities:
Range: .............. 12,700+ samples and 100 test IDs (one sample can
contain fourteen measurement types)
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14 Appendix A
Logging Interval:
Intervals: ................. 1 second to 1 hour
Time Constant:
User selectable
Response Time:
Velocity: .................. 200 msec
Temperature: .......... 2 minutes (to 66% of final value)
Humidity: ................ <1 minute (to 66% of final value)
External Meter Dimensions:
3.3 in. 7.0 in. 1.8 in. (8.4 cm 17.8 cm 4.4 cm)
Meter Probe Dimensions:
Probe length: ................................. 40 in. (101.6 cm)
Probe diameter of tip: .................... 0.28 in. (7.0 mm)
Probe diameter of base: ................ 0.51 in. (13.0 mm)
Articulating Probe Dimensions:
Articulating section length: 6.0 in (15.24 cm)
Diameter of articulating knuckle: 0.38 in (9.5 mm)
Meter Weight:
Weight with batteries: 0.6 lbs (0.27 kg)
Power Requirements:
Four AA-size batteries (included) or AC adapter (optional) 9 VDC,
300 mA min.
1
Temperature compensated over an air temperature range of 40 to 150°F (5 to
65°C).
2
The accuracy statement of ±3.0% of reading or ±3 ft/min (±0.015 m/s), whichever is
greater, begins at 30 ft/min through 6000 ft/min (0.15 m/s through 30 m/s).
3
Accuracy with instrument case at 77°F (25°C), add uncertainty of 0.05°F/°F
(0.03°C/°C) for change in instrument temperature.
4 Accuracy with probe at 77°F (25°C). Add uncertainty of 0.1% RH/°F (0.2% RH/°C)
for change in probe temperature. Includes 1% hysteresis.
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