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TSI Instruments AIRFLOW Instruments ProHood PH721 - User Manual

TSI Instruments AIRFLOW Instruments ProHood PH721
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OWNER’S MANUAL
Alnor
®
Electronic Balancing Tool
Models EBT720/EBT721
and
AIRFLOW Instruments ProHood
Capture Hood Models PH720/PH721
EBT720/PH720 Shown with all
accessory options
EBT721/PH721 Shown with
all accessory options

Table of Contents

Questions and Answers

  • J
    Jasmine GreenSep 13, 2025
    What does error code 51 mean on my TSI Instruments Power Tool?
    • R
      Ricardo GomezSep 13, 2025
      If your TSI Instruments Power Tool displays Error Code 51, it indicates that the pressure sensor gain is out of range. You can attempt to perform user calibration.
  • L
    Laura CarlsonSep 12, 2025
    What does Error Code 74 mean on a TSI Instruments Power Tool?
    • B
      Benjamin GonzalesSep 12, 2025
      If your TSI Instruments Power Tool displays Error Code 74, it means the pressure voltage for user pressure calibration is out of range. You should re-do the user calibration.
  • J
    Joshua RichardsonSep 12, 2025
    What does Error Code 64 mean on a TSI Instruments Power Tool?
    • E
      emaloneSep 12, 2025
      If your TSI Instruments Power Tool displays Error Code 64, it indicates that the pressure sensor gain factor C is out of range. Try performing user calibration.
  • S
    sbartlettSep 10, 2025
    What does Error Code 63 mean on a TSI Instruments Power Tool?
    • Z
      Zachary MorrisSep 10, 2025
      If your TSI Instruments Power Tool displays Error Code 63, it indicates that the pressure sensor gain factor B is out of range. Try performing user calibration.
  • Q
    qwhiteSep 9, 2025
    What does Error Code 62 mean on a TSI Instruments Power Tool?
    • J
      Jeremy HurleySep 9, 2025
      If your TSI Instruments Power Tool displays Error Code 62, it indicates that the pressure sensor gain factor A is out of range. Try performing user calibration.
  • S
    Scott JacksonSep 8, 2025
    What does Error Code 61 mean on a TSI Instruments Power Tool?
    • D
      Dakota SmithSep 8, 2025
      If your TSI Instruments Power Tool displays Error Code 61, it means the humidity sensor voltage at 80% RH is out of range. You can try performing user calibration.
  • S
    scottturnerAug 23, 2025
    How to fix a TSI Instruments Power Tool with no display?
    • R
      Richard HuntAug 23, 2025
      If the TSI Instruments Power Tool's display is not showing anything, there could be several reasons: * The unit might not be turned on. Try pressing the I/O key. * The batteries could be low or dead. Replace them with fresh ones. * The battery contacts might be dirty. Clean them carefully. * The AC adapter might not be connected. Ensure it is properly plugged in.
  • M
    Matthew CooperSep 6, 2025
    What does Error Code 59 mean on a TSI Instruments Power Tool?
    • M
      Morgan SchmidtSep 6, 2025
      If your TSI Instruments Power Tool displays Error Code 59, it means the slope factor for user temperature sensor calibration is out of range. You can try re-doing the user calibration or setting the temperature sensor calibration to FACT.
  • A
    April JosephSep 5, 2025
    What does Error Code 58 mean on a TSI Instruments Power Tool?
    • A
      Anthony JohnsonSep 5, 2025
      If your TSI Instruments Power Tool displays Error Code 58, it means the offset factor for user temperature sensor calibration is out of range. You can try re-doing the user calibration or setting the temperature sensor calibration to FACT.
  • T
    Tammie PattonSep 4, 2025
    What does Error Code 33 mean on my TSI Instruments Power Tool?
    • C
      christopher24Sep 4, 2025
      If your TSI Instruments Power Tool shows Error Code 33, it means that while performing user calibration of the hood temperature sensor or accessory temperature sensor, the accessory temperature/humidity probe was found instead. Plug in the selected probe.

Summary

LIMITATION OF WARRANTY AND LIABILITY

Service Policy

Information on contacting customer service for instrument issues and repairs.

Chapter 1. Introduction

Instrument Description

Provides a detailed overview of the components included with the EBT/PH models.

Chapter 2. Unpacking and Setting Up

Preparing the Instrument for Use

Guides on preparing the instrument before operation, including power source selection.

Power the Micromanometer with the AC Adapter

Instructions on how to power the micromanometer using the AC adapter.

Power the Micromanometer with Batteries

Details on powering the micromanometer using AA-size batteries.

Chapter 3. Getting Started

Keypad Operation

Explains the function of each key on the micromanometer keypad for operation.

Chapter 4. How To

Select a Tool;Probe

Guides on selecting the appropriate measurement device or probe for the task.

Delete Sample Data

Options for deleting all sample data, data for a specific Test ID, or a single sample.

Select;Set a K-factor for a Tool

How to enter or adjust K-factors to calibrate velocity and flow measurements.

Turn Back Pressure Compensation On and Off

Instructions on enabling or disabling back pressure compensation for accurate flow readings.

Take Back Pressure Compensated Hood Readings

Step-by-step procedure for performing back pressure compensated flow measurements.

Calibrate the Micromanometer (User Calibration)

Procedures for performing user calibration of the micromanometer's sensors.

Select User Calibration or Factory Calibration

Option to switch between user-calibrated and factory-calibrated settings.

Connect and Download Data to a Computer

Instructions for connecting to a PC and downloading data using software.

Data Acquisition (Polling)

Details on using the polling command for real-time data acquisition.

Chapter 6. Flow Measurements Using the Capture Hood

Non-Backpressure Compensated Measurements

Procedures for taking flow measurements without back pressure compensation.

Single Measurements

How to initiate and take individual flow measurements.

Running Average Measurements

Steps for taking and holding running average flow measurements.

Backpressure Compensated Measurements

Detailed steps for performing accurate flow measurements with back pressure compensation.

Chapter 7. Maintenance and Troubleshooting

Calibration

Information on annual calibration services and shipping procedures.

Troubleshooting the Instrument

Common symptoms, possible causes, and corrective actions for instrument issues.

Error Codes

Lists specific error codes, their causes, and recommended corrective actions.

Appendix A. Back Pressure

Verifying Flow Measurements

Recommended practices for verifying flow measurements using alternate methods.

Specifications

TSI Instruments AIRFLOW Instruments ProHood PH721 Specifications

General IconGeneral
Data LoggingYes
Storage Temperature14 to 140 °F (-10 to 60 °C)
Battery TypeFour size AA batteries or optional AC adapter
Measurement Range50 to 2500 fpm (0.25 to 12.7 m/s)
Accuracy (Air Velocity)±3% of reading
DisplayLCD

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