Omega HHF82 User guide

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User’s Guide

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e-mail: [email protected]

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HHF82

Mini Digital Airflow Meter

Page 2

omega.com [email protected]

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

Stamford, CT 06907-0047 USA

Toll-Free: 1-800-826-6342 (USA & Canada only) Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only) Tel: (203) 359-1660 Fax: (203) 359-7700 e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

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MINI DIGITAL AIRFLOW METER

USER’S MANUAL

HHF82

Please read this manual carefully and thoroughly before using this product.

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TABLE OF CONTENTS

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Key Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 –3

What’s In the Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Setup Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Install Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 –6

Measuring Real-time Air Speeds. . . . . . . . . . . . . . . . . . . . . . 4 –5

Recording and Displaying Maximum and Minimum Speeds

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintenance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

. . 5 –6

INTRODUCTION

Thank you for purchasing OMEGA’s HHF82 Mini Digital Airflow Meter. Please read this user’s manual carefully and thoroughly before using the product.

The HHF82 is an inexpensive one-piece vane anemometer that can accurately measure airflow speeds in ducts and at input and output grilles of HVAC/R systems.

KEY FEATURES

• Five available air velocity units: ft./min, m/sec, kmph, mph, knots

• Low-friction ball vane wheels provide high accuracy at all air speeds

• Min/max memory + data hold

• 10-minute Auto Power Off (disabled during Min/Max recording sessions)

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• Small and light enough for one-handed operation

• Includes wrist strap

• CE and RoHS approved

• 1 year limited warranty

WHAT’S IN THE BOX

The meter comes in a white box along with this user’s manual.

PRODUCT OVERVIEW

The figure below shows all controls and components on the front of the meter as well as the location of the battery compartment, which is accessible from the back of the unit.

A. Vane sensor B. LCD C.

Power

button

Hold

button

Max./Min.

Unit

button

button G. Wrist strap H. Battery compartment

(on back)

C F

D E

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SETUP INSTRUCTIONS

INSTALL BATTERY

To open the battery compartment, turn the meter over and use a small Phillipshead screwdriver to loosen and remove the single screw securing the battery compartment cover. Plug a “9V” battery into the wired socket inside the compartment. The terminals of the battery and the socket mate in only one way, with the smaller male terminal plugging into the larger female terminal.

Secure the battery compartment by replacing its cover and reinstalling and tightening the Phillips-head screw.

Complete setup by carefully removing the plastic film protecting the LCD.

OPERATING INSTRUCTIONS

MEASURING REAL-TIME AIR SPEEDS

To begin, press the front-panel sounding a single beep. Then press the to choose from among five widely used air speed units. The options are (in the button-press sequence):

Km/h

•

The meter will “remember” your last selection when it is powered off and will resume using that unit upon restart. So if you always use the same unit, you will never have to press the

To extend battery life, when operating in real-time mode the HHF82 will automatically power itself off following any 10-minute period in which no frontpanel button is pressed. The meter will sound two beeps twice when this Auto

(kilometers per hour)—the factory default unit

M/S

(meters per second)

fpm

(feet per minute)

mph

(miles per hour)

Knot

(knots)

Power

Unit

button again.

button. The meter will respond by

Unit

button below it one or more times

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Power Off (APO) function is activated. The APO function is disabled when operating in Min/Max recording mode (see next section).

To make a measurement

, position the vane at the top of the meter perpendicular to the source of air or wind. Allow time for the reading to stabilize. It makes no difference whether the front of back of the vane faces the wind or air flow.

To hold any reading

the hold and resume displaying real-time values, press the

(“freeze” the display), press the

Hold

button. To release

Hold

button again. This function is very useful for making measurements in low light or when the source of air or wind is above your head, below your knees or around a corner. You can make a measurement, hold it, and then read the display up to 10 minutes later after positioning the LCD at eye level.

RECORDING AND DISPLAYING MAXIMUM AND MINIMUM SPEEDS

The HHF82 can record the maximum and minimum (fastest and slowest) air speed values measured over a user-selectable period of time. The Min/Max recording function is handy for noting fluctuations in the output of a fan over time.

During these recording sessions, the meter’s Auto Power Off function is disabled to enable recording for longer than 10 minutes. The only limit on recording duration is remaining battery life.

To begin recording Max and Min readings

air or wind and then press the

Max./Min.

, first position the vane in the flow of

button on the right side of the front panel. If you begin recording before positioning the vane, your Min. reading will always be recorded as

Pressing the

Max./Min.

0.0

(zero).

button will cause the term

REC

to appear at the top left of the LCD. The meter will continue to record Max and Min values—but display real-time values—until you press the

To display the maximum air speed

session, briefly press the

Max./Min.

measured during the current recording

Max./Min.

button. (

button again.

Do not

press and hold the button;

this will stop recording). The LCD will display the maximum value below the

Max

term

on the top line.

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To display the minimum air speed

session, briefly press the hold the button.) The LCD will now display the minimum value below the term

Min

on the top line.

Once you have pressed the cannot resume displaying real-time readings without ending the recording session.

To end the recording session, press and hold the

REC

cause the real-time air speed measurements.

term to disappear. The meter will then resume displaying

Max./Min.

measured during the current recording

button again. (Again, do not press and

Max./Min.

button with

REC

on the top line, you

Max./Min.

button. This will

SPECIFICATIONS

Measurement Ranges1.4 to 108 km/hr, 0.4 to 30m/sec,

80 to 5910 fpm, 0.9 to 67 mph, 0.8 to 58.3 knots

Measurement Accuracy±3% of full-scale value below 20m/sec;

±4% of full-scale value above 20m/sec

Measurement Resolutions 0.1 km/hr, 0.1m/sec, 1 fpm, 0.1 mph, 0.1 knots

Display Size 1.3 in. (33mm) diagonal

Digit Height 3/8 in. (10mm)

Auto Power Off Trigger 10 minutes of front-panel inactivity (disabled in

Min/Max recording mode)

Current Consumption 17mADC

Dimensions 6.15 x 2.36 x 1.29 in. (156 x 60 x 33mm)

Weight (including battery) 5.6 oz. (159g)

Power Source1 “9V” battery

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MAINTENANCE TIPS

When the icon appears in the upper left corner of the LCD, it’s time to change the meter’s “9V” battery (although measurements will remain valid for several hours after the icon first appears). To change the battery, follow the Setup Instructions on p. 4.

Remove the battery if you do not expect to use the meter for an extended period of time (months or years).

Do not drop or disassemble the meter or immerse it in water. To clean the housing or LCD, use a dry or damp cloth. Avoid using chemical

cleaners.

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OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a

WARRANTY/ DISCLAIMER

period of 13 months from date of purchase. OMEGA’s Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modiﬁcation. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper speciﬁcation; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemniﬁcation, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return pack age and on any corr esponde nce. The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product

was PURCHASED,

2. Model and serial number of the product under

warranty, and

3. Repair instructions and/or speciﬁc problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

RETURN REQUESTS/ INQUIRIES

FOR NON-WARRANTY REPAIRS, for current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or speciﬁc problems

relative to the product.

consult OMEGA

Page 11

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Process Measurement and Control?

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