Omega DPG4000 User Manual

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User’s Guide

DPG4000

Digital Test Gauge

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.

omega.com [e-mail]

Servicing North America:

U.S.A. Omega Engineering, Inc.
Headquarters: 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: [phone] Fax: [phone]
e-mail: [e-mail]

For Other Locations Visit omega.com/worldwide

1

Introduction

The DPG4000 combines the high accuracy of digital electronics with
the convenience and ease of use of an analog test gauge. Accurate to
± 0.05% FS, the DPG4000 can be used as a calibration reference, or
in any application where high accuracy pressure measurement is
required.

Many user

gurable functions have been designed into the
DPG4000 including sampling rate, TARE, damping, auto shut , and
min-max. Once the gauge is co gured, settings can be locked and
password protected to prevent unauthorized changes to co guration.

1.1 Customer Service

OMEGA Engineering

Tel: [phone]

Fax: [phone]

www.omega.com

email: [e-mail]

1.2 Standard Equipment

Check to see that your DPG4000 has arrived intact. Batteries are
factory installed unless you have purchased the optional 24V powered
version, in which case batteries are not supplied or installed. Save the
packing materials at least until you have that there is no
concealed damage.

1.3 Safety information

A Warning identi es conditions and actions that pose hazard(s) to the
user; a Caution identi es conditions and actions that may damage the
Calibrator or the equipment under test.

2

Symbols Used

The following table lists the International Electrical Symbols. Some or all
of these symbols may be used on the instrument or in this manual.

Symbol Description

Power OFF

Power ON

Earth ground

Risk of Danger. Important information. Refer to manual.

Battery

Hazardous Voltage

Conforms to ATEX requirements

Conforms to relevant European Union directives.

Wheeled bin, conforms to EC directive 2002/96/EC

Hazard Location Information

Ex Hazardous Areas

An Ex-hazardous area as used in this manual refers to an area made
hazardous by the potential presence of ammable or explosive vapors.
These areas are also referred to as hazardous locations, see NFPA 70

Article 500.

Misuse

Should the DPG4000 be exposed to overpressure or sudden physical
shock (i.e. being dropped) it should be examined for any damage that
may cause a safety concern. If in doubt please return the unit for
evaluation to OMEGA Engineering, Inc. Please refer to the Customer
Service Section for contact information.

Caution

To avoid possible damage to calibrator or to equipment under test:

• If the message changes to "OL" the range limit is exceeded and the

pressure source must immediately be removed from the DPG4000 to
prevent damage to the pressure transducer inside.

• Maximum torque allowed is 13,5 Nm = 10 ftlbs. NEVER exceed the

torque allowed.

DPG4000 Display and Controls

Operation

Power: The standard DPG4000 is supplied with 3 AA batteries
installed. If you purchased the optional 24Volt powered version,
batteries are not installed. Connect a 24V power supply to the terminal
block on the rear of the gauge, noting proper polarity.
Do not install batteries when external power will be used.

Push the power button momentarily to turn the unit on. Push it again
to turn it off.

Set-up and configuration:

Push the CONFIG button to access the user-settable functions on the
gauge. Each time the CONFIG button is pressed; the display advances

3

Pressure display

Engineering Units

0 - 100% bar graph

Selects an action in
configuration.
Also turns the
back-light on/off

Tur ns Power on/off

Enters set-up and

configuration menus

Zeros the display,

Scrolls forward through

menu displays

Recalls min and max

readings.

Scrolls backwards

through menu displays

4

to the next function. Once a function has been set, press ENTER to
exit the configuration menu, or CONFIG to continue with further
configuration. In order, the configuration menu and operation is as
follows:

1. Engineering Units set. The unit is shipped configured to display

PSI. By pressing the ▲ and ▼ (ZERO and MAX/MIN) keys you
can scroll forward and backwards through the 18 standard
engineering units plus a one custom unit/scale. When the desired
unit is displayed, press ENTER or CONFIG. Pressure will now be
displayed in the chosen engineering units.

See the Specifications section of this manual for a list of available
engineering units. See the Supervisory Mode section for details on
setting up custom units.

2. Set Auto Off. The auto-shut off can be set in 1 minute increments

from 1 to 30 minutes or “off” (continuous operation). The unit is
shipped set for 30 minutes. Use the ▲ and ▼ keys to set the
desired interval. The “off” setting is at the low end of the choices,
below 1 minute.

3. Display battery voltage. Actual voltage and a percent of life

bargraph indicate battery condition

4. Display actual temperature. The DPG4000 is temperature

compensated, this displays the temperature measured by the
internal sensor. The value can be set to degrees F or degrees C
using the arrow keys.

5. Set damping. Choices are “on” and “off” set with the ▲ and ▼

keys. Turning damping on will smooth readings from pulsating
pressure sources.

6. Set sample rate: This determines how often pressure is sampled

and the display is updated. Choices are 0.5, 1, 3, and 10
samples/second. Note that 10/sec provides the fastest response
time.

7. Set TARE. This allows you to set a constant offset value, which is

then subtracted from the measured pressure. For example if a
TARE is set at 30 PSI, and the measured pressure is 37 PSI, the
displayed value will be 7 PSI.
A pressure of 27 PSI would be displayed as –3 PSI.

The tare value is set manually with the ▲ and ▼ keys, and is
based on the engineering units and resolution selected for display.
TARE value can be set to the maximum range of the gauge.

The bar graph will always display the actual pressure based on the
full range of the gauge regardless of the tare setting. This is done