Differential Pressure Gauge Selection Guide – Features & Models

Differential Gauges, Switches and Transmitters

  • Designed to measure the difference in pressure between two points in a system and present the resultant differential pressure directly on a single gauge dial
  • A magnetic movement allows the simultaneous sensing of both pressures while completely isolating the gauge function from the pressure chamber without the use of mechanical seals
  • Recognized for leading durability and performance
  • Differential gauge products designed and manufactured in the U.S.

Selecting the right differential pressure (DP) gauge is key to keeping your systems running smoothly – whether you are measuring flow, filter performance, or liquid levels. With so many options to consider, it can be a challenge to know where to start. Explore our DP models below, along with tips from our experienced DP gauge experts about how to choose the ideal model for your application.

Differential Pressure Gauge Products: Features & Specifications

Click on View Model Page to access differential pressure gauge details. Comparison of piston vs. diaphragm differential pressure gauges.

Model

DP Range Min

DP Range Max

Max Line Pressure

Max Line Temperature

Accuracy

Electrical Availability

Specifications,
Instructions & Drawings

1002 PI/PIS

PSID 0-4
bar 0-0.28

PSID 0-100
bar 0-7

3000 psig
(200 bar)

200°F (93°C)

5%

1 Switch

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1002 PVC

0-10 PSID

0-30 PSID

150 psig
(10 bar)

140°F (60°C)

5%

1 Switch

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1020 DI/DIS

PSID 0-1
In. H2O 0-25

PSID 0-30
In. H2O 0-830

1000 psig
(200 bar)

200°F (93°C)

5%

1 Switch

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1201 PG/PGS

PSID 0-5
bar 0-0.4
KPA 0-40

PSID 0-150
bar 0-10
KPA 0-1000

3000 psig
(200 bar)

200°F (93°C)

2%

1 Switch

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1201 PVC

0-5 PSID

0-30 PSID

200 psig
(13 bar)

200°F (93°C)

2%

1 Switch

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1203 PG/PGS/PGT

PSID 0-5
bar 0-0.4
KPA 0-40

PSID 0-150
bar 0-10
KPA 0-1000

5000 psig (400 bar)

200°F (93°C)

2%

1 or 2 Switches
Transmitter
Nema 4X Enclosure

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1204 PGS/PGT

PSID 0-5
bar 0-0.4
KPA 0-40

PSID 0-150
bar 0-10
KPA 0-1000

5000 psig
(340 bar)

176°F (80°C)

2%

1 or 2 Switches
1 or 2 relays
Transmitter
Class 1 Div. 1

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1206 PG

PSID 0-5
bar 0-0.4
KPA 0-40

PSID 0-150
bar 0-10
KPA 0-1000

10,000 psig
(690 bar)

200°F (93°C)

2%

No Electrical

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1303 PG/PGS/PGT

PSID 0-100
bar 0-7
KPA 0-700

PSID 0-1000
bar 0-70
KPA 0-7000

5000 psig
(340 bar)

200°F (93°C)

2%

1 or 2 Switches
Transmitter
Nema 4X Enclosure

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1306 PG

PSID 0-100
bar 0-7
KPA 0-700

PSID 0-1000
bar 0-70
KPA 0-7000

7,500 psig
(517 bar)

200°F (93°C)

2%

No Electrical

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1502 DG

PSID 0-8
bar 0-0.6
KPA 0-60

PSID 0-300
bar 0-20
KPA 0-2000

3000 psig
(200 bar)

200°F (93°C)

2%

No Electrical

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1504 DGS/DGT

PSID 0-10
bar 0-0.7
KPA 0-70

PSID 0-300
bar 0-20
KPA 0-2000

3000 psig
(200 bar)

176°F (80°C)

2%

1 or 2 Switches
1 or 2 relays
Transmitter
Class 1 Div. 1

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1514 DGS/DGT

PSID 0-1
bar 0-0.07
KPA 0-7
In. H2O 0-30
mmH2O 0-700
kg/cm2 0-0.07
SQ. RT. Contact us

PSID 0-50
bar 0-3.5
KPA 0-350
In. H2O 0-1400
mmH2O 0-35000
kg/cm2 0-3.5
SQ. RT. Contact us

1500 psig
(100 bar)

176°F (80°C)

2%

1 or 2 Switches
1 or 2 relays
Transmitter
Class 1 Div. 1

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1516 DG/DGS/DGT

PSID 0-1
bar 0-0.07
KPA 0-7
In. H2O 0-30
mmH2O 0-700
kg/cm2 0-0.07
SQ. RT. Contact us

PSID 0-50
bar 0-3.5
KPA 0-350
In. H2O 0-1400
mmH2O 0-35000
kg/cm2 0-3.5
SQ. RT. Contact us

1500 psig
(100 bar)

200°F (93°C)

2%

1 or 2 Switches
Nema 4X Enclosure
Transmitter

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1518 DG/DGS

PSID 10-0-10
bar 0.7-0-0.7
KPA 70-0-70
In. H2O 275-0-275
kg/cm2 0.7-0-0.7

PSID 50-0-50
bar 3.5-0-3.5
KPA 350-0-350
In. H2O 1400-0-1400
kg/cm2 3.5-0-3.5

1500 psig
(100 bar)

200°F (93°C)

2%

1 or 2 Switches
Nema 4X Enclosure

View Model Page →

1533 DGS/DGT

PSID 0-8
bar 0-0.6
KPA 0-60
In. H2O 0-225
Ft. H2O 0-18
kg/cm2 0-0.6
SQ. RT. Contact us

PSID 0-300
bar 0-20
KPA 0-2000
In. H2O 0-8000
Ft. H2O 0-680
kg/cm2 0-20
SQ. RT. Contact us

3000 psig
(200 bar)

200°F (93°C)

2%

1 or 2 Switches
Transmitter
Nema 4X Enclosure

View Model Page →

1536 DG

PSID 0-1
bar 0-0.06
KPA 0-6
in H2O 0-25
mmH2O 0-640
kg/cm2 0-0.06
SQ. RT. Contact us

PSID 0-50
bar 0-3.5
KPA 0-350
in H2O 0-1400
mmH2O 0-35000
kg/cm2 0-3.5
SQ. RT. Contact us

750 psig
(50 bar)

200°F (93°C)

2%

No Electrical

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1831 DG/DGS

PSID 0-0.2
bar 0-0.02
KPA 0-2
In. H2O 0-5
Ft. H2O 0-0.5
mmH2O 0-130
kg/cm2 0-0.02
SQ. RT. Contact us

PSID 0-8
bar 0-0.6
KPA 0-60
In. H2O 0-225
Ft. H2O 0-18
mmH2O 0-6000
kg/cm2 0-0.6
SQ. RT. Contact us

150 psig
(10 bar)

200°F (93°C)

2%

1 or 2 Switches
No Enclosure

View Model Page →

1833 DGS/DGT

PSID 0-0.2
bar 0-0.02
KPA 0-2
In. H2O 0-5
Ft. H2O 0-0.5
mmH2O 0-130
kg/cm2 0-0.02
SQ. RT. Contact us

PSID 0-8
bar 0-0.6
KPA 0-60
In. H2O 0-225
Ft. H2O 0-18
mmH2O 0-6000
kg/cm2 0-0.6
SQ. RT. Contact us

150 psig
(10 bar)

200°F (93°C)

2%

1 or 2 Switches
Transmitter
Nema 4X Enclosure

View Model Page →

D=Diaphragm   G=Gauge   S=Switch   T=Transmitter   P=Piston

What is a Differential Pressure Gauge?

A differential pressure gauge measures the difference in pressure between two points in a system. Unlike standard pressure gauges that measure pressure at a single point, DP gauges display the pressure drop across equipment like filters, pumps, or flow elements, helping monitor performance, detect clogs, and ensure systems run efficiently.

Using a differential pressure gauge offers several benefits, including improved system efficiency, early fault detection, and reduced maintenance costs all crucial for keeping industrial operations running smoothly. Learn more about the advantages of differential pressure monitoring.

Orange Research differential pressure solutions, including gauges, switches and transmitters, are built to withstand the tough demands of industrial environments, delivering precise and dependable measurement and control. From monitoring fluid flow and filter performance to tracking tank and vessel levels, our products are tailored to fit your unique application requirements. Talk to our experts about your application specifications and we will help you select the ideal DP gauge to meet your needs.

How to Select the Right Differential Pressure Gauge

Choosing the right DP gauge for your industrial application ensures accurate measurements, reliable performance, and long-term durability. When selecting a differential pressure gauge, key factors to consider include:

  • Pressure Range: The gauge should cover your system’s operating pressures without exceeding maximum limits.
  • Material Compatibility: Select materials that are compatible with the type of gas or liquid you are measuring to prevent corrosion or damage.
  • Process Conditions: Consider temperature extremes, vibration, and other environmental factors that may impact DP gauge performance.
  • Mounting and Connection Style: Choose the right configuration – panel mount or inline, for easier installation and visibility.
  • Application Type: Whether you are measuring flow, monitoring filter conditions, or tracking liquid levels, select the gauge that is designed for the task.

If you are unsure of which DP gauge is right for your setup, our team is here to help. With decades of experience, we will guide you through the selection process and help you choose a differential pressure gauge tailored to your system’s exact needs. Contact us to get started.

Why Choose Orange Research for DP Gauges for Industrial Applications?

As a leading manufacturer of flow meters and differential pressure gauges, we design our products for precision, durability, and performance, even in the most demanding environments. Whether you need to monitor flow, level, or filter condition in industries like oil and gas, hydraulics or flow measurement, our DP gauges offer reliable, easy-to-read measurements to keep your operations running smoothly.

With a wide range of models, materials, and custom options available, the experts at Orange Research will help you find the right fit for your application. Contact us today to get expert guidance on selecting the ideal differential pressure gauge for your needs.

WARNING: Some of our products contain Nickel, a chemical known to the State of California to cause cancer. For more information go to: www.p65warnings.ca.gov

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