Thank you for purchasing TPI brand products. The TPI 575 Vane/Hotwire Air
Velocity Meter is a state of the art, easy to use instrument designed to provide
temperature and air velocity readings. The instrument is ruggedly constructed and
comes with a 3 Year Guarantee.
This manual will guide you through the functions of the TPI 575 which will give
you many years of reliable service.
Your TPI 575 Vane/Hotwire Air Velocity Meter comes complete with the following
items as standard:
TPI 575 Instrument Hotwire Probe Head Vane Probe Head Rubber Boot Soft Carrying Case Batteries
Instruction Manual
Your TPI 575 Digital Vane/Hotwire Thermometer has the following options
available:
Serial Computer Interface RS232
3
Instrument Overview
Remote Hot
Wire Probe
Dual LCD
Unit Key
Hold Key
Power Key
Record Key
Hot/Vane Key
Zero Key
Recall Key
Battery Compartment
RS232 Output
Sensors
Remote
Vane Probe
°C or °F key
Operating Instructions
1. Select the Hot probe or Vane probe for location of measurement.
2. Connect the selected probe to the meter.
3. Push ON button to turn meter on.
4. Push HOT WIRE button or VANE button as per a s elected probe.
5. Pressing the 'C/'F button will toggle between 'C and 'F.
6. Push UNIT button to select the desired display units of the air
velocity.
7. The user can scroll through 5 units: - m/s, km/s, ft/min, knots,
mile/h.
8. If you selected a hot probe, pull down the sensor cover of the probe
(so that air velocity sensor can be seen) and position the probe at
desired location of measurement. The Probe should be positioned
so that a white spot will face the winds. In c ase the place is too far
and the antenna should be pulled long, do not hold the probe sensor,
but hold the antenna.
4
9. Read the velocity and temperature on the LCD.
10. It will take several minutes until the readings get stable after the
probe is positioned.
11. Press "HOLD" button to freeze the display after taking a measurement is finished.
12. "DH" will be displayed on the LCD.
13. Press "HOLD" button again to return to normal operation.
Battery should be replaced when "LBT" is displayed at the top left of the screen.
Volume Measurements
To determine CFM (cubic feet per minute) in a duct, the area of the duct
must first be measured (use the equations below). Then multiply an air
velocity measurement by the area measurement to obtain CFM.
CFM (ft3/min) = Air Velocity (ft/min) X Area (in square Inches)
Area Equation for Square Ducts:
144
Height (H)
Area (A) = Height (H) X Width (W)
Width (W)
Area Equation for Round Ducts:
Radius (R)
Area (A) = π X R
Where
R
2
π= 3.14
2
= (Radius x Radius)
Recording Data
If you want to record the reading changes, press "REC" button when the
reading gets stable. Once activated the meter will begin recording.
5
1. The REC annunciator will be displayed. The meter will record
minimum, maximum and average temperatures.
2. To recall the data after recording, press "RCL" button.
3. The "MAX", "MIN", "AVG" values will be recalled sequentially.
4. If you press "RCL" button, both temperature and wind velocity will
be displayed at the same time on the LCD. The screen will display
"MAX", "MIN", "AVG" sequentially.
5. Press "REC" button to return to normal operation.
The meter has auto power off feature on normal operation.( 10 minutes)
Auto power off is disabled on record mode.
RS232 Output
Holding down "RCL" button will display "MAX, "MIN", "AVG". And then
"RS-232" at the top right of the screen. This function prints the reading
currently being measured in ASCII code. RS232 cable is needed in order
to view the readings on your computer.
SPECIFICATIONS
Instrument General
Operating Temperature Range -10˚C to +50˚C
Operating Humidity Less than 80% Rh
Battery 1.5V Alkaline battery X6
Battery Life > 30 Hours Continuous Use
Display Backlit Dual LCD with function annunciators
Dimensions 74mm x 144mm x 29mm
Weight 150g
Casing Rubber Boot as Standard
Switch Off Auto Power Off after 10 minutes
6
Sensors
Temperature Measurement -20˚C to +80˚C (-5˚F to 175˚F)
Temperature Accuracy ±1% of reading ±0.5°C
±1% of reading ±1.0°F
Velocity Measurement Vane: 0.4 to 25 m/s ±2% of reading ±3 digits
Hot wire: 0.2 to 20 m/s ±5% of reading ±3 digits
Units of Measure m/s, km/h, ft/min, knots, mile/h
CALIBRATION & SERVICE
It is recommended that the instrument be calibrated every 12 months. Please
consult Test Products International for further details.
GUARANTEE
Your TPI 575 Hot wire/Vane Air Velocity Meter is guaranteed free from defects in materials and
workmanship for 3 Years from the date of purchase.
Covered by TPI: - Repair parts and labour; or replacement of the product at the option of TPI.
Normal transportation charges to the purchaser are also covered.
Not covered by TPI: - Damage to the product which are the result of abuse, improper use or maintenance are not covered. Any other expenses, consequential damages, incidental expenses including damages to property are not covered. Transportation expenses to the customer are not covered.
To obtain warranty performance: - Include with the product your name, address, phone number,
written description of the problem and proof of purchase date. Carefully package and return to TPI.
This guarantee does not affect your statuary rights.
Trouble Shooting Guide
Problem Solution
Unit will not turn on Battery voltage is low, change batteries.
7
Visit TPI, The Value Leadertm at:
www.tpi-thevalueleader.com
Test Products International, Inc.
Headquarters:
9615 SW Allen Blvd.
Beaverton, OR 97005
USA
503-520-9197 • Fax: 503-520-1225
e-mail: info@tpi-thevalueleader.com
Test Products International, Ltd.
342 Bronte St. South Unit #9
Milton, Ontario L9T 5B7
Canada
905-693-8558 • Fax: 905-693-0888
e-mail: info@tpicanada.com
Test Products International UK Ltd.
Longley House, East Park
Crawley, West Sussex RH10 6AP
England
Tel: +44 (0)1293 561212
Fax: +44 (0)1293 813465
e-mail: info@tpi-uk.com