TSI Instruments Alnor Model AXD620 Operation manual

Ventilation Testing
Micromanometer
Alnor®Model AXD620
AIRFLOWTM Model PVM620
Operation and Service Manual

Copyright©
TSI Incorporated / 2007-2008 / 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 Model AXD620/AIRFLOW PVM620 .. 3
Installing the Batteries ...............................................................3
Using the Optional AC Adapter .................................................3
Connecting to a Computer..............................................................3
CHAPTER 3 OPERATION .................................................................5
Keypad Functions ...........................................................................5
Common Terms ..............................................................................5
Menus .............................................................................................6
DISPLAY SETUP.................................................................................6
PRESSURE ZERO............................................................................... 6
SETTINGS .........................................................................................6
FLOW SET UP....................................................................................6
ACTUAL/STANDARD SETUP ................................................................7
DATA LOGGING .................................................................................7
Measurements...........................................................................7
Log Mode/Log Settings .............................................................7
Delete Data................................................................................7
% Memory .................................................................................7
LogDat2TM Downloading Software.................................................. 7
CHAPTER 4 MAINTENANCE............................................................9
Recalibration...................................................................................9
Cases.............................................................................................. 9
Storage ...........................................................................................9
CHAPTER 5 TROUBLESHOOTING................................................11
APPENDIX A SPECIFICATIONS.....................................................13

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. Pressure tubing
4. Static pressure tip
5. USB cable
6. CD-ROM with downloading software

3
Chapter 2
Setting-up
Supplying Power to the Alnor Model AXD620/AIRFLOW PVM620
The Alnor AXD620/AIRFLOW PVM620 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 AXD620/AIRFLOW
PVM620 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.
Connecting to a Computer
Use the Computer Interface USB Cable to connect the instrument to a
computer. Connect the end labeled “COMPUTER” to the computer USB
port and the other end to the data port of the Alnor AXD620/AIRFLOW
PVM620.
For information on how to download stored data see Chapter 3 LogDat2™
Downloading Software.
Caution: This symbol is used to indicate that the data port
of the Alnor AXD620/AIRFLOW PVM620 is not intended for
connection to a public telecommunications network.
Connect the USB data port only to another USB port.

5
Chapter 3
Operation
Keypad Functions
ON/OFF Key Press to turn the Alnor Model AXD620/AIRFLOW
PVM620 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 (ST) Keys Press to scroll through choices while setting a
parameter.
(Enter) Key Press to accept a value or condition.
Arrow (gor h) 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,
Pressure Zero, 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.

6 Chapter 3
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”.
Log Interval The logging interval is a frequency period that the
instrument will log readings. For example, if the
logging interval is set to 30 minutes, each sample
will be the average of the last 30 minutes.
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.
PRESSURE ZERO
To zero the pressure reading, select the Pressure Zero menu. The instrument
will indicate if the pressure zero was successful.
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 gor hsoft 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 K-Factor. Use the gor hsoft keys to scroll through the types and
then press the key to accept the desired type. To change the setting,
highlight the Enter Settings option and press the key.

Operation 7
NOTE: K-Factors are intended for use with diffusers with pressure taps
and a manufacturer-supplied K factor.
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.
DATA LOGGING
Measurements
Measurements to be logged are independent of measurements on the
display, and must therefore be selected under DATA LOGGING Æ
Measurements.
Log Mode/Log Settings
You can set Log Mode to Manual and Auto-save.
•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.
•The Log Interval setting is active during Auto-save mode
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.
LogDat2TM Downloading Software
The Alnor AXD620/AIRFLOW PVM620 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 AXD620/AIRFLOW PVM620, connect the
supplied computer interface USB cable to the Alnor AXD620/AIRFLOW
PVM620 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.

9
Chapter 4
Maintenance
The Alnor Model AXD620/AIRFLOW PVM620 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 Model AXD620/AIRFLOW PVM620
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]
The Alnor Model AXD620/AIRFLOW PVM620 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, multiple-point 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
Model AXD620/AIRFLOW PVM620. If the enclosure of the Alnor Model
AXD620/AIRFLOW PVM620 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.

11
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Alnor Model
AXD620/AIRFLOW PVM620. If your symptom is not listed, or if none of the
solutions solves your problem, please contact TSI.
Table 5-1: Troubleshooting the Alnor Model AXD620/AIRFLOW
PVM620
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.
Reading fluctuates
/ unstable
Fluctuating flow Reposition probe in
less-turbulent flow or use
longer time constant.
No response to
keypad
Keypad locked out Unlock keypad by
pressing ST keys
simultaneously.
Instrument Error
message appears
Memory is full Download data if desired,
then DELETE ALL
memory.
Fault in instrument Factory service required
on instrument.
WARNING!
The pressure sensor is protected from damage up to 7 psi (48 kPa or
360 mmHg). At higher pressure it can burst!

13
Appendix A
Specifications
Specifications are subject to change without notice.
Static / Differential Pressure:
Range1: -15 to +15 in. H2O (-28.0 to +28.0 mm Hg, -3735 to
+3735 Pa)
Accuracy: ±1% of reading ±0.005 in. H2O (±0.01 mm Hg, ±1 Pa)
Resolution: 0.001 in. H2O (1 Pa, 0.01 mm Hg)
Velocity From a Pitot Tube:
Range2: 250 to 15500 ft/min (1.27 to 78.7 m/s)
Accuracy3: ±1.5% at 2000 ft/min (10.16 m/s)
Resolution: 1 ft/min (0.1 m/s)
Duct Size:
Range: 1 to 250 inches in increments of 0.1 in.
(1 to 635 cm in increments of 0.1 cm)
Volumetric Flow Rate:
Range: Actual range is a function of actual velocity, pressure, duct
size, and K factor
Instrument Temperature Range:
Operating : 40 to 113°F (5 to 45°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
Data Storage Capabilities:
Range: 12,700+ samples and 100 test IDs (one sample can contain
fourteen measurement types)
Logging Interval:
Intervals: 1 second to 1 hour
Time Constant:
Intervals: User selectable
External Meter Dimensions:
3.3 in. ×7.0 in. ×1.8 in. (8.4 cm ×17.8 cm ×4.4 cm)
Meter Weight:
Weight with batteries: 0.6 lbs (0.27 kg)

14 Appendix A
Power Requirements:
Four AA-size batteries (included) or AC adapter (optional) 9 VDC, 300 mA,
4-18 watts (input voltage and frequency vary depending on which adapter is
used)
1Overpressure range = 7 psi (190 in. H2O, 360 mmHg, 48 kPa).
2Pressure velocity measurements are not recommended below 1,000 ft/min (5 m/s) and are best
suited to velocities over 2000 ft/min. Range can vary depending on barometric pressure.
3Accuracy is a function of converting pressure to velocity. Conversion accuracy improves when
actual pressure values increase.

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.
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Cressex Business Park
High Wycombe
Buckinghamshire
HP12 3QP England
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Web: www.airflowinstruments.co.uk
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Copyright © 2008 by TSI Incorporated