Omega DPG9000 User guide

User’s Guide

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Digital Industrial Gauge

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DPG9031
DPG9131
DPG9231
DPG9046
DPG9146
DPG9246
DPG9045
DPG9145
DPG9245
DPG9030
DPG9130
DPG9230

– 2–

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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 i

WARNING: These products are not designed for use in, and should not be used for, human applications.

t contains, and reserves the right to alter specifications without notice.

– 3–

Congratulations on your purchase of the Omega

®

digital industrial gauge. This feature-packed gauge

offers a menu-driven display for easy customization.

User selectable features include 12 units of measure-

ment, password protected calibration and disable

functions, adjustable bar graph and update rate. A

five digit display for maximum resolution is standard.

Optional 4-20mA output, switching and line- po

wer

add to the versatility of the gauge. With the range

printed on the keypad, Omega digital gauges meet

ASME B40.7 specification. See a complete listing of

product features and specifications on pages 18.

– 4–

TABLE OF CONTENTS

Quick Reference ............................................6-7

Keypad Functions ..........................................8-9

• ON/OFF KEY

• ZERO/CLEAR KEY

• MIN/MAX KEY



(down arrow key)

• MENU KEY

• BACKLITE KEY



(up arrow key)

• ENTER KEY

MENU Functions (MENU Mode) ..............................10-17

• Engineering Units

• CONFIG Mode

• Set Password

• Recalibration of Gauge

• Zero Key Adjustment

• Disabling Menu Options

• Bar Graph Options

• Auto Off Options

• Update Options for Displayed Pressure

• Dampen

ing O

ptions

• Backlite Options (Backlite Optional)

• Set Switch(es) Option(s) (Switches Optional)

Specifications ................................................18

Ranges ........................................................19

Display Messages ..........................................19

Wiring Diagrams ........................................20-30

Gauge Installation & Maintenance ....................32-34

• Mounting

• Battery Replacement & Installation

– 5–

.88˝ high digital display (41⁄2˝ case)

.60 high digital display(3˝ case)

Bar graph

% of full scale

Flashing display when unit

pressured below zero

Press to indicate minimum

or maximum pressure

gauge has measured

Press again to return to

pressure units

UNITS (Pressure)

ENGLISH

INHG

PSI*

INH2O

@ 4°C, 20°C, 60°F

FTW

FTSW

METRIC

BAR

MBAR

KPA

CMH2O

KG/CM2

QUICK RE

Press to read menu

UPDATE RATE

(Pressure measurement

per second)

10x (100 MS)*

5x (200 MS)
2x (500 MS)

1x (1 Sec)

BACKLITE

(Off options)

Never
2 SEC

5 SEC*

15 MIN
30 MIN

– 6–

FERENCE

Range on keypad;

complies with ASME B40.7

AUTO OFF

(Turns unit off after

option selected)

2 minutes

5 minutes
15 minutes
30 minutes

DAMPENING

(Takes pressure reading

and averages

process pressure

Press to turn unit on or off

While in unit of measurement mode (eg: psi),

press the ZERO CLEAR button to rezero the

gauge. This feature functions when displayed

pressure is within ±5% or 10% of zero value

Flashing display when unit

pressurized beyond full-scale

This bar graph indicates battery level;

the more segments, the closer the

battery is to full charge (only dis-

played on units with battery

Press to turn backlite on or off

(backlite optional)

Never*

None*

Avg 2
Avg 4
Avg 6
Avg 8

CALIBRATE

Zero and span

adjustments,

password

protected

DISABLE

Allows for

“lockout” of

MENU

options

*Indicates Default

– 7–

KEYPAD FUNCTIONS

Turns the gauge on and off. When pressing the

ON/OFF

ON/OFF key while in the off position, gauge start­up display first indicates the software version
followed by the model number and gauge pres­sure range. The gauge will then display indicated
pressure and be ready for use.

Press this key for one second prior to gauge

ZERO

usage to rezero any initial zero shift. If zero shift

CLR

is greater than programmed zero al
gauge will display OFSET (blinking) for 1 sec­ond, then return to the measure mode. To clear
minimum and maximum values, press
ZERO/CLR button (when min/max values are
indicated). Gauge will auto advance once zeroed.

lowance, t

he

MAX/MIN

The Max/Min key allows review of minimum and
maximum pressure values since unit start-up or
last push of the clear key. Press key to:

1) Indicate maximum pressure.

2) Indicate minimum pressure.

3) Exit MAX/MIN mode and return the unit to
pressure measurement mode. To clear mini­mum and maximum values press ZERO/CLR
key (must be in MAX/MIN mode).



(down arrow key) is used in the MENU

The
mode, see f

ollowing MENU key section.

– 8–

MENU

Key for gauge
with Backlite

Key for gauge
without Backlite
displayed with



(up arrow

icon only)

EYPAD FUNCTIONS

K

This key allows for customization of the gauge.

Pressing the MENU key allows cycling through
the main MENU items; UNITS, CONFIG, GRAPH,

OFF, UPDAT & DAMP. Any item changed in the
Menu become the new default setting(s).
Revised settings are saved in the event of power
loss.



The

(up arrow key) or (down arrow key)
on the keypad allows for scrolling through the
MENU options to increase or decrease numeric
values as required. If in the menu mode, gauge
will automatically advance to measure mode
once selected MENU item has been set.

This key manually turns the backlite on or off.
five options are available. They include NEVER,
10 sec, 30, sec, 1 min, 5 min*. With the NEVER

option, the gauge BACKLITE will remain lit
whenever the gauge is in the ON mode or until
the BACKLITE button is pushed again. Options,

sec, 30 sec, 1 min, 5 min*. allow the BACK-

10
LITE to automatically turn-off after a selected
period of time.

To use the BACKLITE option:
Step 1: Press the MENU key.



Step 2: Press the

(up arrow key) or (down

arrow key) until the word LITE appears.
Step 3: Press ENTER.



Step 4: Press the

(up arrow key) or (down

arrow key) to select the BACKLITE option.
Step 5: Press the ENTER key to finalize your

choice of LITE

options.

– 9–

KEYPAD FUNCTIONS

This key allows for selecting gauge features in the

ENTER

menu finalizing selection. Use of the enter key is
described throughout operating instructions.

MENU OPTIONS

UNITS: 12 units of measurement are available: psi, mmHG,

inH

O with three temperature options: 20°C, 60°F, 4°C*,

2

mBar, inHg, ftH

O, mPa, kPa, kg/cm2and bar.

2

Step 1: Press the MENU key until the word UNITS appears.
Step 2: Press Enter.



Step 3: Press the

(up arrow key) or  (down arrow

key) to select the required unit of measure.
Step 4: Press ENTER to finalize the UNIT selection.

Note: For inH
press the

0 range with three temperature options,

2



(up arrow key) and (down arrow key) to
select the desired temperature, then press ENTER to final­ize the UNIT selection.

CONFIG: This option allows access to additional Menu
options. Options include:

• ENTPW or enter password (this appears as a sub-menu

in the CONFIG mode if a user password has been set).

• RECAL (allows for zero, span and mid-scale calibra-

on of the gauge).

ti

• 0bUTN or zero key (allows for adjustment of % of

range that can be zeroed),

• dISAb, allows for disabling MENU options.

• SETPW: This feature allows for a user defined numer-

ic password. If a user password is not set, all features
in the CONFIG mode will be accessible without a
password. If a user password is set, all items in the
CONFIG menu options are accessible with or without

r password. If a user password is programmed,

a use
it will be required to access the CONFIG menu options.

*Indicates default.

– 10 –

K

EYPAD FU

NCTIONS

MENU FUNCTIONS

How to Use Your Menu Functions

To set a user password (SETPW):
Step 1: Press the Menu key on the keypad



Step 2: Press the

(up arrow key) or (down arrow

key) until the word CONFIG appears.
Step 3: Press Enter. The word SETPW appears on the

gauge display
Step 4: Press Enter. A five digit numeric password is now

required.
Step 5: Press the



(up arrow key) or (down arrow

key) on the keypad to select the first digit of the password.

Step 6: Press ENTER.
Step 7: Repeat until the five-digit password is shown on

the gauge display.
Step 8: Press ENTER.

Note: to erase password at any time while in the SETPW
(set password) mode, press the ZERO/CLEAR key. The
user will be prompted to reprogram the password once the
five-digit password is entered. The gauge will display SAVE.

Step 9: Press Enter to save the

password setting.

ENTPW: Once a user password has been established and
entry into the CONFIG mode is required, the user will be
prompted to ENTPW or enter password.

Follow setup steps 4-8 above.

RECAL: or recalibrate allows for zero, mid-scale, full-scale

and factory default calibration of the gauge. The RECAL
feature also allows for recalibration of gauges with
4-20mA output.

*Indicates default.

– 11 –

ENU FUNCTIONS

M
To use RECAL option:
Step 1: Press the Menu key on the keypad



Step 2: Press the

(up arrow key) or (down arrow

key) on the keypad until the word CONFIG appears.

Step 3: Press Enter.
Step 4: Enter user password if it has been programmed.



Step 5: Press

(up arrow key) or (down arrow key)

until the word RECAL appears.

Step 6: Press Enter.
Step 7: The gauge will now flash between INPUT and unit

of measure on the lower line and .00 on the top line. Apply
zero pressure to the gauge.

Step 8: Press Enter. Zero pressure is now set.
Step 9: The gauge will display full-scale pressure. Apply

full-scale pressure to the gauge.

Step 10: Press Enter. Full-scale pressure is now set.
Step 11: The gauge will now display mid-scale pressure.

Apply mid-scale pressure to the gauge.
Step 12: Press Enter. Mid-scale pressure is now set.

Note: For compound ranges this recalibration is zero,

(
full-scale, mid-scale and full-vac.)

FOR FACTORY CALIBRATED SETTINGS:
Step 13: To reinstate factory calibrated settings for zero,



full-scale and mid-scale press the

(down arrow key)

Menu key until the word FACT appears.
Step 14: Press Enter. Factory calibration settings are now

reinstated.
Step 15: After zero, full-scale and/or mid-scale or factory

ault calibration have been set, the word SAVE appears

def
on the gauge display.

Step 16: Press Enter to finalize calibration.

*Indicates default.

– 12 –

MENU FUNCTIONS

Note: Calibration of Zero, mid-scale or span can be set inde­pendently of each other. For instance, if only full-scale cali­bration is required, press the



(down arrow key) until the
gauge display indicates full-scale pressure. Press Enter and
proceed as indicated above. Calibration of zero, midscale and
full-scale is recommended when recalibrating the gauge.

ZERO KEY (0bUTN): This feature allows

the user to select
percent of full-scale at which the gauge can be rezeroed
using the Zero/Clear key on the keypad. Options include 5%
full-scale*, 10% full-scale or DISAB (disable of the zero key).

To use ZERO option:
Step 1: Press the Menu key on the keypad.
Step 2: Press the



(up arrow key) or (down arrow

key) until the word CONFIG appears.

Step 3: Press Enter.
Step 4: Enter user password, if it has been



Step 5: Press the

(up arrow key) or (down arrow

programmed.

key) until the word 0bUTN (zero key) appears.
Step 6: Press Enter.



Step 7: Press the

(up arrow key) or (down arrow
key) to select 5PCT (5% full-scale), dISAb (disable zero
key) or 10PCT (10% full-scale).

Step 8: Press Enter to finalize the selection.
DISAB: or disable: This feature allows the user to dISAb

(or disable) or ENAb (enable) items in

the MENU. Some
keypad keys can also be enabled or disabled. Any or all
MENU items can be enabled or disabled.

To use DISAB option:
Step 1: Press the Menu key on the keypad.



Step 2: Press the

(up arrow key) or (down arrow

key) until the word dISAb appears.

*Indicates default.

– 13 –

MENU FUNCTIONS

Step 3: press ENTER. The current setting (ENAB or dISAB)

will be displayed.



Step 4: Press the

(up arrow key) or (down arrow

key) on the keypad to select a setting.

Step 5: Press ENTER To finalize the setting.

GRAPH: This option allows the user to change the BAR

graph on the gauge display to correspond to any desired
pressure within the pressure limits of the gauge. This
option is useful w

hen identifying a select portion of the
full-scale range of the gauge. The default setting for the
GRAPH is zero and full-scale pressure. For compound
gauges, the default setting for zero is set at full-scale vacu­um. Full-scale pressure is set at the positive pressure as
displayed on the gauge keypad.

For gauges supplied with the 4-20mA output option, the
default is 4mA equals 0% of the bar graph and 2

0 mA

equals 100% of the bar graph.

Changing the bar graph to a pressure other than 0 and
100% of range will also change the 4-20mA output to cor­respond with the new bar graph pressures for 0 and 100%.

To use GRAPH option:
Step 1: Press the MENU key.



Step 2: Press the

(up arrow key) or (down arrow key)

on the keypad until the word until the word GRAPH appears.
Step 3: Press ENTER . The gauge display will

indicate the
set full scale pressure range setting on the top line. The
middle line indicates the bar graph at 100% of full-scale.
The bottom line of the display will indicate SETFS to set
the full-scale range as displayed by the bar graph and 4­20mA.



Step 4: Press the

(up arrow key) or (down arrow key)
on the keypad to increase or decrease gauge value at
100% of range.

*Indicates default.

– 14 –

MENU FUNCTIONS

Step 5: Press the ENTER key to finalize your choice. The

gauge display will now display SET. After two seconds the
screen will display the pressure value for 0% on the top
line. The middle line indicates the bar graph at 100% of
fullscale. The bottom line will display SET 0.

Step 6: Press the



(up arrow key) or (down arrow

key) on the keypad to increase or decrease gauge value at
0% of range.

Step 7: Press

the ENTER key to finalize your choice. The
new values for the bar graph and 4/20mA settings have
now been saved.

OFF: This option sets the amount of time before the gauge will
turn itself off. Offerings are Never*, 30MIN,10MIN, 5MIN, 2
MIN.

To use the OFF option:
Step 1: Press the MENU key.



Step 2: Press the

(up arrow key) or (down arrow

key) until the word OFF appears.
Step 3: Press ENTER.



Step 4: Press the

(up arrow key) or  (down arrow

key) to select the desired OFF time.

Step 5: Press the Enter key to finalize the OFF setting.

UPDATE: This option allows for changing the rate at which

pressure is updated on the display screen. This feature is
useful with rapid changes in process pressure that may
cause flutter of the display. Options are 100ms*, 1 sec,
500ms and 200ms, updates per second or 100ms*.

ustomer processes vary, update rates should be

Since c
selected based on the application.

To use the UPDATE option:
Step 1: Press the MENU key.

*Indicates default.

– 15 –

M

ENU FUNCTIONS

Step 2: Press the (up arrow key) or (down arrow

key) until the word UPDATE appears.
Step 3: Press Enter.



Step 4: Press the

(up arrow key) or (down arrow

key) to select an update rate.

Step 5: Press ENTER to finalize the selection.

DAMP or dampening: with five different options, this mode

allows for taking process pressure readings and averaging

them. This option is particularly useful to stabilize m

inor
process fluctuations. The options are NONE*, AVG 8, AVG
6, AVG 4, AVG 2.

Step 1: Press the MENU key until the word dAMP appears.
Step 2: Press Enter



Step 3: Press the

(up arrow key) or  (down arrow

key) to select a dampening option.
Step 4: Press the ENTER key to finalize your Damp option.

(This Menu item is only seen on units with the switch option)

SWSET: Allows for setting switch setpoints. The gauge is
offered with one or two SPDT switches. If (one) SPDT
switch is ordered the menu option is SW1. If (two) SPDT
switches are ordered, the MENU options are SW1 and SW2.

Step 1: Press the MENU key.



Step 2: Press the

(up arrow key) or (down arrow
key) on the keypad to select the switch to be set. (If two
switches are present.)

Step 3: Press ENTER. The top line of the gauge display will
indicate pressure a

t 60% of the full-scale gauge range* or
the most recent switch setpoint. The middle line of the dis­play will indicate a bar graph that displays the pressure
position within the pressure range. The bottom line will
display SETPT (blinking).

*Indicates default.

– 16 –

M

ENU FUNCTIONS

Note: Setpoints are limited to the full-scale pressure range
of the gauge.

Step 4: Press the



(up arrow key) or (down arrow key)

on the keypad to increase or decrease switch set-point
Step 5: Press the ENTER key to finalize switch setpoint. The

gauge will display SET. After two seconds, the top line will
indicate RETRP pressure. The bottom line will read SET.

Step 6: Repeat above to set RETRP (ret

rip value) If the
gauge is supplied with (one) setpoint, the screen will
advance to the measurement mode. If (two) switches are
supplied the display will advance to SW2.

Repeat the aforementioned if the gauge is supplied with
two switches.

Notes: The bar graph will increase or decrease as any
setpoint pressure is adjusted. The bar graph indicates
switch setpoint position within the full-scale pressure
ran

ge of the gauge.

The switch setpoint unit of pressure measurement corre­sponds with the current set unit of measure of the gauge.
If gauge unit of measurement is changed after switch(es)
is set, switch setpoint(s) will automatically be updated to
correspond with revised unit of measurement. Switch
deadband is the difference between the SETPT (setpoint)
and the RETRP (retrip) pressure.

– 17 –

DIGITAL INDUSTRIAL GAUGE SPECIFICATIONS:

Type: Battery: DPG9030, DPG9032 (3˝)

Accuracy: .25% Full Scale, terminal point
Case Size: 3˝, 41⁄2˝
Case Material: 3˝ SS, 4

Case Encl. Rating: Weatherproof, IP65
Wetted Materials: 17-4 SS (sensor), 316SS (socket)
Socket Size:

Socket Location: Lower, 3, 9 and 12 o’clock
Ranges: Vac. thru 20,000 psi (see eng. units below for other units)
Operating Temp.: 14/140°F (10/60°C)
Storage Temp.: –4/158°F (-20/70°C)

DISPLAY

Type: LCD
Display Digits: Five (5)
Character Height: 3˝ .60˝, 41⁄2˝ .88˝
Backlite: Optional
Bar Graph: Yes
Battery Life: 3˝ >1000 hrs., 41⁄2˝ >3600 hrs.
Agency Approvals: CE, FM* (Intrinsically Safe Class1, Div 1), CSA and CENELEC

KEYPAD FUNCTIONS

On/Off: Manually turns unit on and off (auto off options in menu)
Zero/Clear: Zeros display or clears min. and max. values when displayed



Min/Max

(down) Stores min and max values, arrow key allows for

Arrow Key: scrolling thru menu items
Menu Key: Provides access to menu options



Backlite

(up) Manually turns backlite on and off (auto off options in
Arrow Key: menu), arrow key allows for five menu options.
(Backlite optional) arrow key allows for scrolling thru menu options

Enter: Selects items in the menu

MENU MODE

Engineering Units: 10 units of measurement are available; psi, In. H

Configuration Mode Allows for changes to default settings of gauge
(Config): Including zero disable feature

Bar Graph (Graph): Allows for adjustment of bargraph and 4-20 (optional feature)
Auto Off (Off): Allows for changes to auto off of gauge, five options:

Update Rate
(Update): Four options: 100 ms, 200 ms, 500 ms, 1 sec

Dampening (Damp): Six options: None, average, 2, 4, 6, 8 times per 100ms
Backlite: Five options: Never, 10 sec., 30 sec., 1 min., 5 min.
Field Recalibration: Allows for recalibration of zero, midscale and span

OPTIONS

4-20mA Display: 12-36 Vdc, mA with unlimited turndown (within gauge range)
Line Powered: 12-36 Vdc, 2VA max.

Switching*: (1) or (2) SPDT switches,(max. contact 30Vdc, 1 amp,

DPG9045, DPG9046 (4.5˝)

Loop: DPG9130 , DPG9031 (3˝)

DPG9145, DPG9146 (4.5˝)

Line: DPG9230, DPG9231 (3˝)

DPG9245, DPG9246

1

⁄2˝ fiberglass reinforced thermoplastic or

black epoxy coated aluminum

1

⁄4 or 1⁄2 NPT, JIS, DIN, SAE, (1⁄2 NPT only with 41⁄2˝ case,

others on application)

*FM is not available with the following: 4
case, SPDT switch option(s) (XU1, U2) or Backlite (XBL) option)

three temp. options: 20°C, 60°F, 4°C*), Ft. H
kPa, kg/cm2, Bar, inHg and mmHg

1

⁄2˝ polypropylene



O (with

2

O, mPa, mBar,

2

(up)

Never, 2 min., 5 min., 15 min., 30 min.

(password protected)

125Vac .5 Amp, Switches adjustable to 100% of range

– 18 –

DIGITAL INDUSTRIAL GAUGE RANGES:

Comp. mmHg in.Hg In. mm ft. Bar/

psi (psi) (press.) (press.) H2OH2O mBar H2O mPa kPa ksc

-15/0/15

1500 60 800 60 250 30 6 200 2

-15/0/30

2000 100 1000 100 300 60 10 300 4

-15/0/60
30
60 300 300 600 300 800 16

100 400 400 1000 400 1000 25
160 600 600 1500 600 1600 40
200 800 800 2000 1000 2500 60
300 1000 1000 2500 4000 100
600 1600 4000 6000 160

800 2000 5000 8000 250
1000 3000 400
1500 6000 500
2000 800
3000 1000
5000
8000

10,000
15,000
20,000

3000 160 160 400 160 50 400 6

-15/0/100

200 200 500 200 600 10

DISPLAY MESSAGES:

Display/Problem Description Action

No Battery Icon
Display (applicable to
gauges with batteries

OFSET (blinking)

Menu button disabled

easure

m

Unit of

selected in Menu

displays N/A

I can’t set the

password I want

I can’t access items in

the main Menu

Gauge has <10%

battery life left

Zero/Clear button

pushed when pressure

displayed is beyond set

rezero pressure limit

Gauge is in

Max/Min mode

Resolution at full scale

pressure range

exceeds 50,000 counts

00000 is not a valid

password

Items that cannot be

accessed have been

disabled

Replace batteries

Only rezero the gauge within

limits of setting in Menu

Push Max/Min button until

unit of measure is displayed

on keypad

Choose another unit of

measure

Select a different password

Enable item(s) in the Menu.

See Menu/CONFIG and

diSAb or DISABLE

– 19 –

WIRING DIAGRAM
Loop Powered 4-20mA (Type DPG 9130, DPG 9131,

DPG 9145, DPG 9146)

2 conductor, 20 AWG shielded

Red (+ exec.) A

Black (– exec.) B

Q1

FID6
C1

R8

FO7

Q2

R1

C10

J3

C4

V+

V–

R5

L1

C9
R6

C6

R4

Keypad Input

C5

C8
DQ/TB 2003

Shield

J2

U4

Y2

GAUGE

FID2

Sensor Input

LOOP+

LOOP–

T9

D10

C14

T7

D9

D7

Y1

F1D1

V1

C3

J1
1

R2

C7

1

R7

J6

R22

R20 C17

D11

D14

D1

U7

R14R16

R24

R18

J3

D5

R23

1

D13

J7

Q4

D16

D6

D15

D12

D3

T12

–

POWER
SUPPL Y

–

METER
PLC
SCADA

T10

GND

+24V

+

+

Battery Input

Installation Procedure

U5

C15

Red

Black

R19

ECND

R21

V6

T8

Q3

C2

FID5

FID4

V2

R9

R10

R11

R12

R13

D8

J5

FID3

T11

321CO21–

EGND

(+)

(A)

(–)

(B) (–)

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the red wire (A) to the positive power terminal.

3. Connect the black wire (B) to the positive terminal on the
meter.

4. Connect the negative side of the meter to
power terminal.

the negative

Note: Meter should be installed on the black wire only.

– 20 –

Load Limitations 4-20mA Output Only

1000

750

500

OPERATING

250

RL-Loop Resistance in Ohms

REGION

0

0 362010

Loop Supply Voltage (Vdc)

30

Vdc MIN = 12V + [0.022A X (RL) ]

= RS+ R

R

L

W

RL= Loop Resistance (ohms)

= Sense Resistance (ohms)

R

S

= Wiring Resistance (ohms)

R

w

– 21 –

WIRING DIAGRAM

POWER

Line Powered (Type DPG 9230, DPG 9231, DPG 9245,
DPG 9246)

2 conductor, 20 AWG shielded

Y1

F1D1

Battery Input

SUPPL Y

–

J1
1

R2
1
J6

R22

R14R16

J3
1
J7

Q4

D16

D12

C3

C7

R7

R20 C17

D14

D1

R24

R23

D13

T10

+24V

+

V1

U7

D5

D6

D15

D3

T12

GND

Red (C)

Black (D)

C2

FID5

FID6
C1

FID4

D11

C15

R18

R8

V2

FO7

R1

C10

Q1

R9

R10

R11

R12

R13

D8

T11

EGND

FID3

321CO21–

(+)

C9
R6

Q2

J5

J3

C4

V+

( – )

V–

R5

L1

C5

C8

DQ/TB 2003

C6

R4

Keypad Input

Shield
Black (–exec.) D

Red (+exec.) C

FID2

J2

U4

Y2

GAUGE

Sensor Input

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the red wire (C) to the positive power terminal.

3. Connect the black wire (D) to the negative power terminal.

– 22 –

WIRING DIAGRAM

Line Powered with (1) SPDT switch (Type DPG 9230_-S1,
DPG 9231_-S1, DPG 9245_-S1, DPG 9246_-S1)

5 conductor, 22 AWG shielded

(–exec.) F
(+exec.) E

POWER
SUPPL Y

+

–

Red (E)

Black (F)

White (NO)

Brown (Common)

Green (NC)

(+)

V+

(–)

GAUGE

V–

•

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the red wire (E) to the positive power terminal.

3. Connect the black wire (F) to the negative power terminal.

Wiring the Switch:

ally Open: Use the white and brown wires.

Norm
Normally Closed: Use the green and brown wires.

– 23 –

WIRING DIAGRAM

Line Powered with (2) SPDT switches (Type DPG 9230_-S2,
DPG 9231_-S2, DPG 9245_-S2, DPG 9246_-S2)

8 conductor, 22 AWG shielded

SWITCH 1

(N.O .) White

(N. C. ) Green

(COM) Brown

FID2

SWITCH 2

T5

(N.O.) Yellow

T6

(N.C.)

Blue

(COM) Orange

T4

J2

Sensor Input

Y2

Battery Input

J1
1

R2
1
J6

R22

R14 R16

J3
1
J7

Q4

D16

POWER
SUPPLY

–

Switch 1

Switch 2

Y1

F1D1

V1

C3

C7

R7

R20 C17

D14

D1

U7

R24

D5

R23

D13

D6

D15

D12

D3

T12

T10

GND

+24V

Red (G)

+

Black (H)

Blue (NO)

Brown (Common)

Orange (NC)

Violet (NO)

Grey (Common)

Yellow (NC)

T2

T3

FID6
C1

R8

FO7

C10

Q1

Q2

J3

C4

D2

C11

C13

C12

R5

R1

L1

C9
R6

C6

R4

Shiel d
Blac k (–exec.) G

Red (+exec.) H

V+

V–

T1

K1

K2

K2

U4

C5

C8
DQ/TB 2003

Ke ypad Input

GAUGE

•

ISO 1

R15

ISO 2

R17

C2

FID5

FID4

D11

V2

C15

R1 8

R9

R10

R11

R12

R13

D8

J5

FID3

T11

321CO21–

EGND

(+)

(–)

•

– 24 –

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the red wire (G) to the positive power terminal.

3. Connect the black wire (H) to the positive meter terminal.

Wiring Switch 1:

Normally Open: Use the white and brown wires.
Normally Closed: Use the green and brown wires.

Wiring Switch 2:

Normally Open: Use
Normally Closed: Use the blue and orange wires.

the yellow and orange wires.

– 25 –

WIRING DIAGRAM

Line Powered/Loop Powered 4-20mA (Type DPG 9230_-A,
DPG 9131_-A, DPG 9245_-A, DPG 9246_-A)

4 conductor, 20 AWG shielded

Red (I)

Black (J)

LOOP–

D10

C14

V1

U7

D5

D6

D15

D3

T12

GND

Red (I)

White (K)

Green (L)

Black (J)

+

R19

ECND

R21

T9

D11

V6

T8

Q3

U5

C2

FID5

FID6
C1

FID4

R8

V2

FO7

C15

R18

T11

EGND

R1

C10

Q1

R9

R10

R11

R12

R13

D8

FID3

321CO21–

C9
R6

Q2

J5

J3

C4

FID2

R5

J2

U4

L1

C5

C8

DQ/TB 2003

C6

R4

Sensor Input

Y2

Keypad Input

Shield

Green (L)

White (K)

(+)

V+

(+)

(–)

(–)

GAUGE

V–

Battery Input

–

POWER
SUPPLY

–

METER
PLC
SCADA

J1
1

R2
1
J6

R22

R14R16

J3
1
J7

Q4

D16

D12

LOOP+

T7

D9

D7

Y1

C3

C7

R7

R20 C17

D14

D1

R24

R23

D13

T10

+24V

+

F1D1

– 26 –

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the white wire (K) to the positive power terminal.

3. Connect the green wire (L) to the negative power terminal.

4. Connect the red wire (I) to the positive power terminal.

5. Connect the black wire (J) to the positive meter terminal.

6. Connect the n
meter terminal.

Note: Meter should be installed on the black wire only.

If red/black wires are connected prior to the green/white
and power is connected, output may be damaged due to
overloading.

Warning: Using multiple power sources for line and loop
power is not recommended as it may cause damage to
the unit.

egative power terminal with the negative

– 27 –

WIRING DIAGRAM

Line Powered/Loop Powered 4-20mA with (1) SPDT switch
(Type DPG 9230_-AS1, DPG 9231_-AS1, DPG 9245_-AS1,
DPG 9346_-AS1)

7 conductor, 22 AWG shielded

Red M

Blac k N
(N.O.) Blue

(N.C.) Orange

(COM) Brown

FID2

J2

Sensor Input

Y2

Battery Input

–

POWER
SUPPLY

–

METER
PLC
SCADA

Switch

J1
1

R2
1
J6

R22

R14R16

J3

1
J7

Q4

D16

LOOP+

T7

D9

D7

Y1

C3

C7

R7

R20 C17

D14

D1

R24

R23

D13

D12

T10

+24V

LOOP–

ECND

T9

D10

C14

F1D1

U5

V1

C2

D11

U7

C15

R18

D5

D8

D6

D15

D3

T12

T11

GND

EGND

Red (M)

+

White (P)

Green (O)

Black (N)

+

Blue (NO)

Brown (Common)

Orange (NC)

T8

R19

Q3

R15

FID5

R9

R10

FID3

321CO21–

T2

T3

FID6
C1

R8

FO7

Q1

Q2

J5

C11

R5

R1

C10

C9
R6

J3

C4

R4

V+

V–

T1

D2

K1

K2

U4

L1

C5

C8
DQ/TB 2003

C6

Keypad Input

Shield
Green (–exec.) O
White (+exec .) P

GAUGE

R21

V6

ISO1

ISO2

R17

FID4

V2

R11

R12

R13

(+)

(+)

(–)

(–)

•

– 28 –

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the white wire (P) to the positive power terminal.

3. Connect the green wire (O) to the negative power terminal.

4. Connect the red wire (M) to the positive power terminal.

5. Connect the black wire (N) to the positive meter terminal.

6. Connect the n
meter terminal.

Note: Meter should be installed on the black wire only.

If red/black wires are connected prior to the green/white
and power is connected, output may be damaged due to
overloading.

Wiring the Switch:

Normally Open: Use the blue and brown wires.

ormally Closed: Use the orange and brown wires.

N

egative power terminal with the negative

– 29 –

WIRING DIAGRAM

Line Powered/Loop Powered 4-20mA with (2) SPDT switches
(Type DPG 9230_-AS2, DPG 9231_-AS2, DPG 9245_-AS2,
DPG 9246_-AS2) 10 conductor, 22 AWG shielded

SWITCH 1

Red Q

Blac k R

(N.O .) Blue

(N.C .) Orang e

Battery Input

LOOP+

T7

D9

D7
Y1

C3

J1
1

R2

C7

1

R7

J6

R22

R20 C17

D14

D1

R14 R16

R24

J3

R23

1

D13

J7

Q4

D16

D12

T10

+24V

LOOP–

D10

F1D1

D5

D15

D3

GND

–

–

Switch 1

Switch 2

T9

C14

V1

D11

U7

R18

D6

T12

POWER
SUPPLY

METER
PLC
SCADA

ECND

T8

U5

C2

C15

D8

T11

EGN D

+

R19

T3

R21

V6

ISO1

Q3

R15

C11

ISO2

R17

FID5

FID6

C13

C1

C12

FID4

R8

V2

R5

FO7

R1

C10

Q1

R9

R1 0

R1 1

R1 2

R1 3

C9
R6

Q2

J5

J3

FID3

C4

321CO21–

R4

Red (Q)

White (T)

Green (S)

Black (R)

+

Blue (NO)

Brown (Common)

Orange (NC)

Violet (NO)

Grey (Common)

Yellow (NC)

T2

T1

D2

K1

K2

K2

U4

L1

C5

C8
DQ/TB 2003

C6

Ke ypad Input

Shiel d

Green

Whit e

(+)

Y2

(-exec.) S

(+exec.) T

(+)

(–)

(–)

(COM) Br ow n

FID2

SWITCH 2

T5

(N.C.) Violet

T6

(N.O .) Ye llo w

(COM) Gre y

T4

J2

Sensor Input

V+

GAUGE

V–

•

•

– 30 –

Installation Procedure

 ESD precautions should be taken. See page 33 for details.

1. Ensure all power is off/disconnected from the circuit.

2. Connect the white wire (T) to the positive power terminal.

3. Connect the green wire (S) to the negative power terminal.

4. Connect the red wire (Q) to the positive power terminal.

5. Connect the black wire (R) to the positive meter terminal.

6. Connect the negati
meter terminal.

Note: Meter should be installed on the black wire only.

Wiring Switch 1:

Normally Open: Use the blue and brown wires.
Normally Closed: Use the orange and brown wires.

Wiring Switch 2:

Normally Open: Use the violet and grey wires.
Normally Closed: Use the yellow and grey wires.

ve power terminal with the negative

– 31 –

GAUGE INSTALLATION:

The Ashcroft digital industrial gauge comes standard with

1

either

⁄4 or 1⁄2 NPT connection. Good piping practices rec­ommend using teflon tape or a pipe sealant on the gauge
threads. Utilize a

9

⁄16˝ (3˝ case), 5⁄8˝ (41⁄2˝ case) wrench on
the wrench flat of the gauge to tighten the gauge to the
process.

NEVER TIGHTEN GAUGE THREADS BY HOLDING THE
BODY OF THE GAUGE. DOING SO MAY DAMAGE THE
GAUGE AND MAKE

HE GAUGE INOPERABLE.

T

Battery Installation and Replacement:

The Type 2074 comes standard with batteries installed.
The 3˝ case uses qty (2) AA alkaline batteries, the 41⁄2˝ case
uses qty (2) C alkaline batteries. Use either Duracell
MN2400, MX2400 or Energizer E92BP, X92RP AAA alka­line, non-rechargeable batteries.

Batteries have a life of approximately 1500 hours (3˝ case).
3600 hours (4

1

⁄2˝ case). Battery life is dependent on gauge
usage, backlite settings and power off settings. When the
lower bar of the battery icon of the gauge display flashes,
the gauge has approximately 7 hours of life remaining.

To replace the batteries (3˝ case):

1) Remove the single screw on the back of the gauge case.

2) Hold the keypad in the palm of hand.

3) Carefully remove the two batteries from the ho

lder and
replace batteries. Use only AA alkaline non-rechargeable
batteries

1

To replace the batteries (4

⁄2˝ case):

1) Remove the ring on the front of the gauge case.

2) Looking at the gauge case, carefully pull the front face
out of the case.

3) Lay the gauge, face down on a flat surface.

4) Carefully remove the two batteries from the holder and
replace the batteries. Use only C alkaline non-recharge-

e batteries.

abl

– 32 –

 ESD PRECAUTIONS

Care should be taken to minimize exposure to ESD.
Proper proto-call should be followed as outlined in:

ANSI/ESD S20.20-2007
ESD ADV1.0-2009
ANSI/ESD S541-2008

Additional ESD Precautions on Proper Handling:

Avoid carpets in cool, dry areas as well as other static
generating materials such as plastic, cellophane, paper, or
cardboard.

Leave digital gauges in their anti-static packagi
ready to be installed.

Dissipate static electricity before handling the digital
gauge or using keypad by touching a well-grounded metal
object, such as the system unit unpainted metal chassis.

If possible, use antistatic devices, such as wrist straps and
floor mats.

When installing batteries, avoid touching (including cloth­ing) the contacts and components.

When making wiring connection to dig
nals, place digital gauge on grounded mat prior to making
connection, and take care to avoid touching (including
clothing) any components.

Take care when connecting or disconnecting cables. A
damaged cable can cause a short in the electrical circuit.

When disconnecting a cable, always pull on the cable con­nector, case, or strain-relief loop, not on the cable itself.

ital g

ntil

ng u

auge termi-

– 33 –

4.00

1.860

.17

CLAMPING RING (1278G ONLY)

WASHER

SPACER POST

(3 REQ’D)

“B” (3 REQ’D)

PANEL

MOUNTING

RING

6˝ RING 
DIA.

5.65˝ 
PANEL
OPENING

5/16˝ MAX PANEL 
THICKNESS

Notes:

1) Do not mix ages or brands of batteries.

2) Do not replace batteries in hazardous areas.

3) To provide maximum battery life, replace both batteries

4) To provide maximum battery life, replace both batteries.

 Pipe to which gauge is attached must be properly

grounded.

PANEL MOUNTING DIMENSIONS:

HOLE

CUTOUT

DIAMETER

3.406

13

⁄32±1⁄32)

(3

3˝ CASE

41⁄2˝ CASE

– 34 –

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a 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 O
wear are not warranted, including but not limited tocontact 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 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 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 bas ic WARRANTY / DISCLAI MER la nguage, and, ad ditionally, 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.

Direc t al l warr anty and r epair requests/ inquiries to the OMEGA Customer Service
Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST
OBTAI N AN AUT HORIZ ED R ETURN (A R) N UMBER FR OM O MEGA’S CUSTOM ER
SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR
numbe r shou ld the n be marked on the outside of the re turn p ackage and o n any
correspondence.

The purchas er i s res ponsibl e for shi pping charges, freig ht, insurance and prope r
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.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2004 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, pho-

tocopied, 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.

WARRANTY/DISCLAIMER

MEGA’s control. Components which

RETURN REQUESTS/INQUIRIES

FOR NON-WARRANTY REPAIRS,
sult OMEGA 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 prod-

uct, and

3. Repair instructions and/or specific

problems relative to the product.

con-

– 35 –

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 Wat

˛

er & Wastewater Treatment

pH, Conductivity & Dissolved Oxygen Instruments

– 36 –

M-4226/0711