Omega DPG5000 User Manual

User’s Guide

http://www.omega.com

e-mail: [e-mail]

DPG5000

PRESSURE GAUGES

M3366/0606

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA...Of Course!

TEMPERATURE

✓ Thermocouple, RTD & Thermistor

Probes, Connectors, Panels &
Assemblies

✓ Wire: Thermocouple, RTD &

Thermistor

✓ Calibrators & Ice Point References
✓ Recorders, Controllers & Process

Monitors

✓ Infrared Pyrometers

PRESSURE,
STRAIN AND FORCE

✓ Transducers & Strain Gages
✓ Load Cells & Pressure Gages
✓ Displacement Transducers
✓ Instrumentation & Accessories

FLOW/LEVEL

✓ Rotameters, Gas Mass Flowmeters

& Flow Computers

✓ Air Velocity Indicators
✓ Turbine/Paddlewheel Systems
✓ Totalizers & Batch Controllers

pH/CONDUCTIVITY

✓ pH Electrodes, Testers &

Accessories

✓ Benchtop/Laboratory Meters
✓ Controllers, Calibrators,

Simulators & Pumps

✓ Industrial pH & Conductivity

Equipment

DATA ACQUISITION

✓ Data Acquisition & Engineering

Software

✓ Communications-Based

Acquisition Systems

✓ Plug-in Cards for Apple, IBM &

Compatibles

✓ Datalogging Systems
✓ Recorders, Printers & Plotters

HEATERS

✓ Heating Cable
✓ Cartridge & Strip Heaters
✓ Immersion & Band Heaters
✓ Flexible Heaters
✓ Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

✓ Metering & Control

Instrumentation

✓ Refractometers
✓ Pumps & Tubing
✓ Air, Soil & Water Monitors
✓ Industrial Water & Wastewater

Treatment

✓ pH, Conductivity & Dissolved

Oxygen Instruments

M3366/0606 DPG5000

Table of Contents

Warranty/Disclaimer ........................................................................2

Return Requests/Inquiries

................................................................3

Instructions ......................................................................................4

Zero Trimming

Use of Auto-Tare Feature

Battery Replacement

Re-Calibration

Use Of Peak-Hold Feature (Optional)

Analog Output Option (0 To 2 VDC)

4-20 mA Transmitter Option

External Power (24 VDC) and
0 to 5 VDC Analog Output Option

External Power Without Other Options

...............................................................................4

..............................................................4

.....................................................................4

..............................................................................5

..........................................5

............................................5

.........................................................6

................................................7

........................................7

1

DPG5000 M3366/0606

• Warranty/Disclaimer

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials
and workmanship for a period of
adds an additional one (1) month grace period to the normal
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 which wear are not warranted, including but not limited contact points,
fuses, and triacs.

OMEGA is please 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 it will be as specified and free of defects.
OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF
ANY KIND WHATSOEVER, EXPRESS 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 even 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.

13 months from date of purchase. OMEGA’s Warranty

one (1) year product

2

M3366/0606 DPG5000

• Return Requests/Inquiries

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 package and on any
correspondence.

The purchaser is responsible for shipping charges, freight, insurance and
proper packaging to prevent breakage in transit.

Warranty Returns

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 problem relative to the product.

Non-Warranty Repairs

For NON-WARRANTY REPAIRS, consult OMEGA for current repair
charges. Have the following information available BEFORE contact 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 problem relative to the product.

3

DPG5000 M3366/0606

• Instructions

NOTE: All units are factory calibrated prior to shipment.

1. Zero Trimming

NOTE: Some units are equipped with zero “knob”.

If it becomes necessary to re-adjust the “Zero” on the display, this can be
accomplished by turning the trimpot marked “Z” just to the left of the On/Off
push button. On the DPG5000 there is either a zero adjustment knob or a black
nylon cover screw. If the gauge has a cover screw, it is necessary to remove the
cover screw to access the zero adjustment pot. An ideal zero is indicated by a
reading of 000 with an intermittently flashing “-” sign.

NOTE: A jewelers screwdriver or an eyeglass repair screwdriver (supplied)
is a suitable instrument. Do not make changes to the Span adjustment (the “S”
pot to the right of the push button) as part of the zero trimming. The Span should
only be changed as part of the re-calibration of a gauge with a known pressure
source.

2. Use of Auto-Tare Feature

When the DPG5000 is first turned on you will notice that the display flashes
for the first 4 seconds. If the On/Off button is pushed and held during this
period, any existing reading will be re-set to zero. This allows the user to “Tare­Out” a starting weight in hydraulic weighing applications. To remove the Tare
feature turn the unit off and back on again and do not push the On/Off button
during the flashing period.

3. Battery Replacement (9 Volt Type)

The battery can be replaced simply by removing the single screw at the top of
the battery door. Remove the old battery, unplug the cable connector and replace
with Eveready type 216 or equivalent. Replace the battery door and secure with
the self-tapping screw. (Do not overtighten)

NOTE: For best accuracy, re-calibration per step 4 should be performed at the
time batteries are replaced.

4

M3366/0606 DPG5000

4. Re-Calibration

This procedure requires a known pressure source of at least ±0.1% accuracy in
order to fully utilize the accuracy potential of the DPG5000 (If not available, the
gauge can be returned to OMEGA for re-calibration.)

Procedure:

A. Ensure the Gauge is at 0 psig (or vacuum if absolute), and adjust the zero

as per instructions in step 1.

B. Apply full scale pressure to the pressure port and adjust the span (“S”) pot

until the display reads the correct pressure.
C. Re-check the zero and re-adjust the zero (“Z”) pot if required.
D. Repeat steps B and C, until no further adjustment is required.

5. Use Of Peak-Hold Feature (Optional)

After initially turning the gage on (wait until the display stops flashing), a
second push of the On/Off button energizes the peak-hold feature and causes
an arrow to appear in the display. In this mode, only the highest reading sensed
will be shown (until a higher reading comes along). This “peak” reading will be
retained until the unit is reset by turning it off with a third push of the button.
The sequence can then be re-initiated; one push for on in normal mode, two
pushes for “peak-hold” mode and a third push for Off/Re-set.

6. Analog Output Option (0 To 2 VDC)

The 0–2 VDC analog output is accessed through a miniature “Phone Jack”
(mate supplied) on the back of the unit (see External Power and 0-2 VDC
Output Plug drawing on the last page). The “Tip” connection is “+ Output”
and the center connection is “- Output”. DO NOT CONNECT TO THE CASE
CONNECTION. This should only be used as a cable restraint. To minimize the
effect on the battery life, the output should not be loaded with less than 100,000
ohms.

0 to 2 VDC Table

0-2 VDC Output

Tip + Output

Center – Output

Body No connection

5

A

B

C

D

– EXCITATION

+ EXCITATION

Gauge
Connector

Typical 4-20 mA Circuit

4-20 mA

CURRENT

LOOP

E

F

Controller

Process

L

R

+Vin

DPG5000 M3366/0606

7. 4-20 mA Transmitter Option

When equipped with this option the gauge no longer operates from batteries
but instead is “Loop Powered”. The loop connection is made to a 6 pin
receptacle located at the rear of the unit (a mating plug is supplied). A voltage of
between 9 and 32 VDC must be maintained at this connection (Pin A is “+” and
Pin B is “-” see sketch) to insure proper operation. Completion of the earth or
system ground (Pin F) is recommended for proper circuit protection.

Power supply voltage must be sufficient to maintain a minimum of 9 VDC
at the gauge terminals after “dropping” voltage across RL at full scale current
(20 mA). Example: If RL = 250 ohm then “drop” is 0.02 Amps X 250 ohm = 5
volts. Therefore power supply minimum is 5 V + 9 V = 14 V.

RE-CALIBRATION: The procedure is the same as in step 4, except that
there are 2 sets of zero and span adjustments. The front panel controls affect the
display and the rear controls (remove “battery” door) affect the 4/20 mA signal.

6

A

F

B

E

C

D

6 Pin Connector

Body Center Tip

(Note: Not to scale)

External Power Plug

M3366/0606 DPG5000

8. External Power (24 VDC) and 0 to 5 VDC Analog Output
Option

When equipped with this option the gauge no longer operates from batteries
but instead is “externally powered”. Both the 24* VDC input power and the 0 to
5 VDC Analog Output are connected to the 6 pin circular connector on the rear
of the unit. Pin connections are as follows:

*Actual range of input voltage is 12 to 31 VDC.

24 VDC External Power and 0-5 V Analog Output

PIN -A- PLUS (+) 24 VDC POWER IN

PIN -B- PLUS (+) ANALOG OUTPUT

PIN -C- MINUS (-) ANALOG OUTPUT

PIN -D- MINUS (-) 24 VDC POWER IN

PIN -E- NO CONNECTION

PIN -F- CASE GROUND

9. External Power Without Other Options

The external power input is accessed through a miniature “Phone Jack”
(mate supplied) on the back of the unit. The “Tip” connection is “+ Power”
and the center connection is “- Power”. DO NOT CONNECT TO THE CASE
CONNECTION. This should only be used as a cable restraint.

It is important that you never remove or insert the “Phone Jack” connector
into the gauge with the power turned on. This can damage the gauge and cause
it to fail. Only turn the power on after the “Phone Jack” has been inserted

into the external power connector.

External Power and 0-2 VDC Output Plug

7

DPG5000 M3366/0606

Notes

8

Thank You for Purchasing

OMEGA Products

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.

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.

Again, thank you for your interest in OMEGA.

We welcome the opportunity to help you achieve your application goals.

OMEGAnet® On-Line Service Internet e-mail

www.omega.com [e-mail]

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SM

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© Copyright 2005 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied,
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