TPI 575 User Manual

Copyright © 2006, Test Products International, Inc

The Value Leader

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www.tpi-thevalueleader.com

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Test Products International, Inc.

9615 SW Allen Blvd

Beaverton, OR 97005-4814 USA

Ph: 503-520-9197 Fax: [phone]

e-mail: [e-mail]

Test Product International Ltd.

342 Bronte Street South, Unit 9

Milton, Ontario L9T 5B7

Ph: 905-693-8558 Fax: [phone]

e-mail: [e-mail]

Test Products International Europe Ltd.

Longley House, International Drive

Crawley, West Sussex RH10 6AQ

Ph: [phone] Fax: [phone]

e-mail: [e-mail]

Contents

3 Introduction
4 Instrument Overview
4 Operating Instructions
5 Volume Measurements CFM
5 Recording Data
6 RS232 Interface
6 Specifications
7 Calibration & Service
7 Guarantee
7 roubleshooting Guide

1. Introduction

Thank you for purchasing TPI brand products.
The TPI 575 Vane/Hotwire AirVelocity Meter is a state of the
art,easy to use instrument designed to provid temperature and
air velocity readings.
The in strument 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:

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TPI 575 Instrument

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Hotwire Probe Head

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Vane Probe Head

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Rubber Boot

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Soft Carrying Case

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Batteries

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Instruction Manual

Your TPI 575 Digital Vane/Hotwire Thermometer has the follow­ing options available:

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Serial Computer Interface RS232

2 3

9. 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

10. Read the velocity and temperature on the LCD

1 1 . It will take several minutes until the readings get stable

after the probe is positioned.

12. Press "HOLD" button to freeze the display after taking

a measurement is finished.

13. "DH" will be displayed on the LCD.

14. 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.

Area Equation for Square Ducts:

Height (H) Area(A)=Height(H) X Width(W)

Width(W)

Area Equation for Round Ducts:

Radius (R)Area (A) = pX R2
Where p = 3.14
R2 = (Radius x Radius)

CFM (ft3/min) =

Air Velocity (f/min) X Area (in square Inches)

144

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.

1. The REC annunciator will be displayed. The meter will record

Instrument Overview

Operating Instructions

1. Select the Hot Wire probe or Vane probe for location of mea
surement.

2. Connect the selected probe to themeter.

3. Push ON button to turnmeter on.

4 . Push HOT WIRE button or VANE button as per a selected 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. "Zero setting : Do not follow normal velocity measurement
procedure.On the sensing head, slide the sensor cover
to the up positionure.On the sensing head, slide the cover to
the up position to let the air velocity sensor isolated from
the environment. Push the zero button to let the reading of
air velocity show zero."
will face the winds.

4

5

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

veloctity 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

And then "RS-232" at the top right of the screen. This function
prints the reading curreently being measurd in ASCII code.
RS232 (p/n A500) cable is needed in order to view the readings
on your computer.

SPECIFICATIONS

Instrument General

Operating Temperature Range 0˚C to +50˚C (32˚F to 122˚F)
Operating Humidity Less than 80% Rh
Battery 1.5V Alkaline battery X 6
Battery Life > 30 Hours Continuous Use
Display Dual LCD with function

annunciators
Dimensions 74mm x 144mm x 29mm
Weight 580g
Switch Off Auto Power Off after 10 minutes

Sensors

Temperature Measurement -20˚C to +80˚C (-5˚F to 175˚F)
Temperature Accuracy ±1% of reading ±0.5˚C ±3 digits

±1%ofreading±1.0˚F ±3 digits

Velocity MeasurementVane: 0.4to25m/s±2%

of reading±3digits
Hot wire:0.2to20m/s ±5.0%
of reading±3digits

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 workman ship 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 main-tenance 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 B a t t e ry v o l t a g e i s l o w, c h a n g e b a t t e r i e s .

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