TSI Instruments VelociCalc 9545 Operation manual

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VelociCalc®
Air Velocity Meter
Model 9545/9545-A
Operation and Service Manual
P/N 1980564, Revision F
July 2022

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Copyright
TSI Incorporated / 2007-2022 / All rights reserved.
Address
TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA
Fax No.
[phone]
LIMITATION OF WARRANTY AND LIABILITY (effective February 2015)
(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 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
anyfuses, batteries or other consumable materials. Only the original manufacturer's
warranty applies;
e. This warranty does not cover calibration requirements, and seller warrants onlythat 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 bySeller, Seller makes no warrantywith 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 BYLAW, 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 THE CASE OF SOFTWARE, SELLER WILL REPAIR OR REPLACE DEFECTIVE
SOFTWARE OR IFUNABLE 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 WARRANTYAND
LIABILITY, which contains the complete and exclusive limited warranty of Seller. This
LIMITATION OF WARRANTYAND 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 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] (USA) or
(1) 651-490-2860 (International).
Trademarks
TSI, the TSI logo, and VelociCalc are registered trademarks of TSI Incorporated in the
United States and may be protected under other country’s trademark registrations.
LogDat2 is a trademark of TSI Incorporated.

iii
CONTENTS
CHAPTER 1 UNPACKING AND PARTS IDENTIFICATION............ 1
CHAPTER 2 SETTING-UP...............................................................3
Supplying Power to the Model 9545/9545-A..................................3
Installing the Batteries...............................................................3
Using the Optional AC Adapter.................................................3
Using the Telescoping Probe .........................................................3
Extending the Probe..................................................................3
Retracting the Probe..................................................................4
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

iv
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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. Downloading software (available on TSI®website:
http://www.tsi.com/SoftwareDownloads).

Chapter 1
2
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3
Chapter 2
Setting-up
Supplying Power to the Model 9545/9545-A
The TSI®Model 9545/9545-A VelociCalc®Air Velocity Meter 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 Model 9545/9545-A 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.
NOTICE
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.

4Chapter 2
Retracting the Probe
To retract the probe, hold the handle in one hand while pulling
gently on the probe cable with the other hand.
Connecting to a Computer
Use the Computer Interface USB Cable provided with the Model
9545/9545-A 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
Model 9545/9545-A 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 Model 9545/9545-A 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”.

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 4 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.
NOTICE
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.

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.

8 Chapter 3
LogDat2™Downloading Software
The Model 9545/9545-A comes with special software called
LogDat2™Downloading Software, which is designed to provide you
with maximum flexibility and power.
LogDat2™ software and updates are available from the TSI®website
at http://www.tsi.com/SoftwareDownloads. Follow online instructions
to download software.
To download data from the Model 9545/9545-A, connect the supplied
computer interface USB cable to the Model 9545/9545-A and to a
computer USB port. Then run the LogDat2™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 Model 9545/9545-A 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 Model 9545/9545-A 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. To fill out an online “Service
Request” form, visit TSI’s website at tsi.com/service.
U.S. & International
TSI Incorporated
500 Cardigan Road
Shoreview MN 55126-3996
Tel: [phone]
[phone]
Fax: [phone]
The Model 9545/9545-A 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 Model 9545/9545-A. If the enclosure of the Model 9545/9545-A 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.

10 Chapter 4
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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 Model
9545/9545-A. If your symptom is not listed, or if none of the solutions
solves your problem, please contact TSI®Incorporated.
Table 5-1: Troubleshooting the Model 9545/9545-A
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.
WARNING
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in Appendix A, Specifications.

12 Chapter 5
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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)
Accuracy1&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

14 Appendix A
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:
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.
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 6000 ft/min (0.15 m/s through 30 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.
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.