Omega Products HHP-401 Installation Manual

User’s Guide

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HHP-401 Series

Digital Manometer

Servicing North America:

USA: One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford CT 06907-0047

TEL: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

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Customer Service: 1-800-622-2378 / 1-800-622-BEST

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Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

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TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: Tel: [phone] FAX: [phone]

En Espan˜ol: [phone]-7803 e-mail: [e-mail]

[e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Rudé armády 1868, 733 01 Karviná

TEL: [phone] FAX: [phone]
Toll Free in Czech Rep.: 0800-1-66342 e-mail: [e-mail]

France: 9, rue Denis Papin, 78190 Trappes

TEL: [phone] FAX: [phone]
Toll Free in France: 0800-4-06342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

TEL: [phone] FAX: [phone]
Toll Free in Germany: 0800 TC-OMEGA

SM

e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5EX, United Kingdom
TEL: [phone] FAX: [phone]
Toll Free in the United Kingdom: 0800 488 488
e-mail: [e-mail]

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OMEGAnet®On-Line Service Internet e-mail

www.omega.com [e-mail]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

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DIGITAL MANOMETER, HHP-401 Series

Specifications

Ranges, in inches of water column : .1", .2", .5", 1.0", 2.0", 5.0", 10.0"

Accurracy +/- 1% of range plus 1 digit

Resolution .001" for ranges to 1.0", .01" for ranges from 2.0" to 10.0"

Connections Metal fittings for 3/32" or 3/16" flexible tubing

Display LCD, .5" digit height

Low battery indicator The symbol "BAT" appears on display

Battery One 9 Volts, alkaline

Battery life 200 hours

Operating temperature range0o

Storage temperature

Standard accessories 9V batter y

Optional accessories Carrying case with two lengths of rubber tubing, one

Warning: This device is for use with air or non corrosive, non explosive gases only.

Warning: Care should be taken not to exceed the maximum overpressure.

Maximum Safe Momentary Overpressure Table

Range Overpressure

English Metric English Metric

0.100 - 1.00" H2O 25 to 250 Pa 8" H2O2 kPa

2.00 - 10.0" H2O 0.5 to 2.5 kPa 5 psid 35 kPa

11.00" H2O - 5 psid 2.7 to 35 kPa 20 psid 140 kPa

C to +50oC (+32oF to +122oF)

-20oC to +70oC (-4oF to +160oF)

insertion tube, two static pressure tips, one 6 " insertion
length Pitot tube. Longer Pitot tubes to 60" are available

General instructions

1) Turn manometer on.

2) If low battery signal is displayed, replace battery located in compartment on back of
manometer.

3) Turn zero adjustment thumbwheel until display indicates zero.

4) Manometer is now ready to operate. Use as follows:

Static pressure

For measurements of static pressure in d ucts, it is recommended that a static pressure t ip or the
static connection of a Pitot tube be used (see f ig.1). Run tubing from stat ic tip to high pressure
port of manometer. A positive readin g i ndica tes pr es sur e a bov e atm os pheric pr ess ur e; a neg ativ e
reading, a pressure below atmospheric pressure.

Insertion tube

The insertion tube may be used to measure static pressure wher e flow is re latively s low, smooth
and without turbulence. The op eni ng of th e tu be must be perpendicular to the direc ti on of t he f low
(see fig.1). If turbulenc e exists, impingement, aspir ation or unequal distribut ion of moving air at
the opening can reduce accuracy of readings significantly.

Air filter test

Connect manometer diff erentially across filter w ith static tips pointin g upstream to eliminat e the
possibility of error due t o air velocity. Connect the tubing fr om the static tip downstream of the

HHP-401 M-3490 / 0899