VELOCICALC®
AIR VELOCITY METER
MODEL 5725
OPERATION AND SERVICE MANUAL
P/N 1980566, REVISION E
FEBRUARY 2016
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CONTENTS
CHAPTER 1 UNPACKING AND PARTS IDENTIFICATION ............ 1
CHAPTER 2 SETTING-UP ................................................................. 3
Supplying Power to the Model 5725 ............................................... 3
Installing the Batteries ............................................................... 3
Using the Optional AC Adapter ................................................. 3
Attaching the Handle ................................................................. 3
Using the Optional Articulating Extension ................................. 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
DATA LOGGING ................................................................................. 6
Measurements ........................................................................... 6
Log Mode/Log Settings ............................................................. 6
Delete Data ................................................................................ 7
% Memory ................................................................................. 7
LogDat2™ Downloading Software ................................................. 7
CHAPTER 4 MAINTENANCE ............................................................ 9
Recalibration ................................................................................... 9
Cases .............................................................................................. 9
Storage ........................................................................................... 9
CHAPTER 5 TROUBLESHOOTING ................................................ 11
APPENDIX A SPECIFICATIONS ..................................................... 13
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Chapter 2
Setting-up
Supplying Power to the Model 5725
The Model 5725 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 5725 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.
Attaching the Handle
To attach the handle, screw the handle into the bottom of the
rotating vane head until secure. Remove the handle after use to
prevent damage to either the head or the handle.
Using the Optional Articulating Extension
The articulating extension allows you to secure the vane head at
nearly any angle. Once you have attached the articulating
extension, you can unscrew the swivel adjustment bolt, and
adjust the angle of the elbow. You can then adjust the pivot
position of the head by partially unscrewing the head from the
handle and tightening it with the knurled knob, located
underneath the vane head.
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Using the Optional Air Cone Kit
Air Cone Flow Hoods are a fast and accurate method of
maximizing the usefulness of your 100 mm (4 in.) rotating vane
anemometer by turning it into an air volume balancing tool. Kit
comes with both rectangular 285 mm x 235 mm (11.2 in. x 9.2 in.)
and circular 180 mm (7.1 in.) diameter cones. Simply slide the
vane head into the Air Cone to perform supply or extract/return
measurements. Kit includes instructions for usage.
Connecting to a Computer
Use the Computer Interface USB Cable provided with the Model 5725
to connect the instrument to a computer for downloading stored data.
For information on how to download stored data see Chapter 3
section titled LogDat2™ Downloading Software.
Caution: This symbol is used to indicate that the data port
of the Model 5725 is not intended for connection to a
public telecommunications network. Connect the USB
data port only to another USB port.
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ON/OFF Key
Press to turn the Model 5725 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, Data Logging and
Calibration.
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”.
Chapter 3
Operation
Keypad Functions
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.
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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 3 types: Round Duct, Rectangle Duct
and Duct Area. 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.
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 or 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.
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.
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Auto-save and Cont-Key modes use Log Interval under the
Mode
Log Settings
Auto-save
Log Interval
Cont-key
Log Interval
Log Settings:
Use Cont-key mode with Log Interval set to 1 second to take
a Sweep measurement across an area.
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.
LogDat2™ Downloading Software
The Model 5725 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 CDROM.
To download data from the Model 5725, connect the supplied
computer interface USB cable to the Model 5725 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.
Operation 7
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U.S. & International
TSI Incorporated
500 Cardigan Road
Shoreview MN 55126-3996
Tel: (800) 874-2811
(651) 490-2811
Fax: (651) 490-3824
Chapter 4
Maintenance
The Model 5725 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 5725 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.
The Model 5725 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 5725. If the enclosure of the Model 5725 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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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 flow 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.
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended
solutions for common problems encountered with the Model 5725. If
your symptom is not listed, or if none of the solutions solves your
problem, please contact TSI.
Table 5-1: Troubleshooting the Model 5725
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in Appendix A, Specifications.
WARNING!
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Appendix A
Specifications
Specifications are subject to change without notice.
Velocity:
Range: 50 to 6,000 ft/min (0.25 to 30 m/s)
Accuracy: ±1.0% of reading 4 ft/min (0.02 m/s)
Duct Size:
Range: 0 to 500 ft2 (0 to 46.45 m2)
Volumetric Flow Rate:
Range: Actual range is a function of actual velocity and duct
area
Temperature:
Range: 40 to 113F (5 to 45C)
Accuracy: 2F (1C)
Resolution: 0.1°F (0.1°C)
Instrument Temperature Range:
Operating (Electronics): 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)
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