TPI 575C1 User Manual

The Value Leadertm

www.tpi-thevalueleader.com

TPI 575

Vane/Hotwire Air Velocity Meter

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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 Troubleshooting Guide

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1. Introduction

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

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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.

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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.

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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

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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.

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Visit TPI, The Value Leadertm at:

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Test Products International, Inc.
Headquarters:
9615 SW Allen Blvd.
Beaverton, OR 97005
USA
503-520-9197 • Fax: [phone]
e-mail: [e-mail]

Test Products International, Ltd.
342 Bronte St. South Unit #9
Milton, Ontario L9T 5B7
Canada
905-693-8558 • Fax: [phone]
e-mail: [e-mail]

Test Products International UK Ltd.
Longley House, East Park
Crawley, West Sussex RH10 6AP
England
Tel: [phone]
Fax: [phone]
e-mail: [e-mail]

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575M © 2004