Omega Products DPG701 Installation Manual

User’s Guide

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Series DPG701

Room Pressure Monitor

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

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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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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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INSTALLATION, WIRING AND CALIBRATION

0 - 10V

0 - 5 V

4 - 20 mA

120/240 VAC

SEL. SWITCH

NO SELECTOR SWITCH WHEN POWERED FROM 24 VAC.

OF ROOM PRESSURE MONITOR

DPG701

1. GENERAL

The DPG701 monitors either positive or negative room pressures.
Refer to the Data Sheet for detailed specifications .

2. INSTALLATION

This instrument is designed for mounting on the surface of a wall by means of (3) #10 screws (5 mm screws).
Select a wall area which is reasonably flat to prevent stressing of the enclosure. A template is printed on a sepa­rate sheet to facilitate installation on a wall.

3. WIRING AND PIPING

3.1. Electrical connections

WARNING: Check setting of voltage selector

switch, 120/240 Vac, before applying power

to this instrument!

NOTE: There is no selector switch when this instrument is powered from a 24 Vac supply.
Connections are by means of a 3/8" terminal barrier with #6 screws.
Terminals 1 and 2 are the power supply connections.
Terminals 4, 5, and 6 are the relay output terminals.
Terminals 8 and 10 are the 0-5 V analog output. Terminals 8 and 9 are the 0-10 V analog output.
Terminals 11 and 12 are the 4-20 mA output, sourcing. Total loop resistance must be less than 580 Ohms.
It is recommended that the length of the signal wires connected to the voltage outputs be limited to about 18 feet
(6 m). The 4 - 20 mA output should be used if the signal wires are long.
A 15 volt supply with a maximum current of 13 mA is available from terminal 8 (COM) and terminal 3.
A light indicator status signal is accessible at terminal 7. The output is low (about 1 Volt) when pressure is within
normal condition (green led on).

120/240 VAC

SEL. SWITCH

RPTRMB01

J1

1 2 3 4

AC

POWER

AVAILABLE

SUPPLY

INPUT

NO SELECTOR SWITCH WHEN POWERED FROM 24 VAC.

15V

13mA

SUPPLY

Fig.1 T erminal connections

3.2. Pressure connections

To monitor the differential pressure between a room and a selected ref erence, connect the air line from the room to
be monitored to the fitting labeled "ROOM PRESSURE", and the air line from the reference area to the fitting
labeled "REFERENCE".
Three sets of barb fittings accomodate plastic tubing sizes from 1/8", to 7/32" I.D. (3 to 6 mm I.D.)

Do not overtighten the fittings, a 1/4 turn,

hand-tightening, is sufficient to insure

a leak-proof connection!

If the pressure in the room to be monitored is higher than the reference pressure, the digital display indicates a
positive pressure, and conversely, if the pressure in the room is less than the reference pressure, the digital display
indicates a negative pressure.

5

6 7 8 9 10 11 12

NO NC COM

RELAY OUT

LIGHT

INDICATOR

STATUS

SIGNAL

COM

0 - 10V

+

0-5V

+

+ -

4-20mA