Orange Research is a global leader in filtration, level and flow monitoring. The company’s rugged and reliable differential pressure gauges, flow meters, switches and transmitters are designed and manufactured in the U.S. and utilized in the most demanding environments. Orange Research provides mechanical and electronic solutions while maintaining exceptional service and low prices to customers worldwide.

With more than 50 years in business, Orange Research is a world-leader of innovative and quality products and designs with rapid response and the industry’s fastest deliveries. Their dedicated staff includes in-house engineers who are able to review applications and system requirements and custom produce instruments that will provide long life and reliable performance.

Gauges - Differential

1200 & 1300 Series

Orange Research
Best Seller
In Stock

Features: Our piston sensor models are for liquid applications where durability and long life are required. Their simple design has fewer parts to wear out and also keeps the price low. A magnet attached to the dial pointer shaft follows a spring-loaded sensor magnet that moves as differential pressure changes. In this way the DP displacement of the sensor is translated to our easy-to-read 2.5 to 6-inch diameter dials.

• Heavy duty — to 10,000 psi line pressure
• Weatherproof design and rugged construction
• Gauge, switch and transmitter versions
• Popular in filtration and flow measurements

1002 & 1020 MINI DP

Orange Research

Features: Our 1002 series piston models are the lowest cost option for liquid applications. Though small, they are the favorites for OEM requirements and measure from 0-1 to 0-100 psid. Our 1020 series diaphragm models are more sensitive and measure from 0-25” H2O to 0-30 psid

1002PI/PIS Series
Differential Pressure Range: 0-1 to 0-100 psid (0-0.07 to 0-7 bar)
Max line pressure: 3000* psig (200 bar)/200ºF (93ºC)
Accuracy: 5%
Porting: 1/8” NPT
Electrical available: 1 switch

1204, 1504 & 1804 XP Series

Orange Research

Features: Our Class 1, Div. 2 enclosures found throughout this catalog are popular for hazardous environments where explosive gases or vapors may be present. Our Class 1, Div. 1 Explosion-proof line, expands on that protection. The heavy-duty enclosures are designed to seal the electronics from environments where flammable gases or vapors often exist and to contain any potential explosions.

The switches and electrical connections are housed in special UL, CSA, FM and ATEX approved enclosures. The cast aluminum housings have two mounting lugs, two 3/4” NPT electrical conduit ports, and meet the following specifications: Class 1, Gr. B, C, & D; Class 2, Gr. E, F, & G; and Class 3. They also meet NEMA 3, 4X, 7, 9, & 12 specifications.

1500 & 1800 SERIES

Orange Research

Features: The popular 1516 model measures from 0-1 psid up to 0-50 psid. Our 1800 series models include our most sensitive diaphragm which can measure from 0-5”H2O to 0-8 psid.We also offer compound range models with a zero center. The diaphragm sensor separates the high and low pressure ports making them popular for gases as well as liquids. There is no bypass between these ports as with our piston models.

1516DG/DGS/DS Series
Differential Pressure Range: 0-1 to 0-50 psid
Max line pressure: 1500 psig (100 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 or 2 switches, Class 1 Div 2

1502 & 1533 SERIES

Orange Research

Features: Our 1502 and 1533 models have a heavy-duty diaphragm that is designed for high differential pressures, to 300 psid. This extends the range of our diaphragm sensor DP line – much higher than the more sensitive 1516 model. Though heavy-duty, the diaphragms are still flexible and repeatable enough to match the ±2% accuracy of our other DP gauges.

1502DG/DGS Series
Differential Pressure Range: 0-10* to 0-300 psid
Max line pressure: 3000* psig (200 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 switch

Switches - Differential

1200 & 1300 Series

Orange Research
Best Seller
In Stock

Features: Our piston sensor models are for liquid applications where durability and long life are required. Their simple design has fewer parts to wear out and also keeps the price low. A magnet attached to the dial pointer shaft follows a spring-loaded sensor magnet that moves as differential pressure changes. In this way the DP displacement of the sensor is translated to our easy-to-read 2.5 to 6-inch diameter dials.

• Heavy duty — to 10,000 psi line pressure
• Weatherproof design and rugged construction
• Gauge, switch and transmitter versions
• Popular in filtration and flow measurements

1204, 1504 & 1804 XP Series

Orange Research

Features: Our Class 1, Div. 2 enclosures found throughout this catalog are popular for hazardous environments where explosive gases or vapors may be present. Our Class 1, Div. 1 Explosion-proof line, expands on that protection. The heavy-duty enclosures are designed to seal the electronics from environments where flammable gases or vapors often exist and to contain any potential explosions.

The switches and electrical connections are housed in special UL, CSA, FM and ATEX approved enclosures. The cast aluminum housings have two mounting lugs, two 3/4” NPT electrical conduit ports, and meet the following specifications: Class 1, Gr. B, C, & D; Class 2, Gr. E, F, & G; and Class 3. They also meet NEMA 3, 4X, 7, 9, & 12 specifications.

1500 & 1800 SERIES

Orange Research

Features: The popular 1516 model measures from 0-1 psid up to 0-50 psid. Our 1800 series models include our most sensitive diaphragm which can measure from 0-5”H2O to 0-8 psid.We also offer compound range models with a zero center. The diaphragm sensor separates the high and low pressure ports making them popular for gases as well as liquids. There is no bypass between these ports as with our piston models.

1516DG/DGS/DS Series
Differential Pressure Range: 0-1 to 0-50 psid
Max line pressure: 1500 psig (100 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 or 2 switches, Class 1 Div 2

1502 & 1533 SERIES

Orange Research

Features: Our 1502 and 1533 models have a heavy-duty diaphragm that is designed for high differential pressures, to 300 psid. This extends the range of our diaphragm sensor DP line – much higher than the more sensitive 1516 model. Though heavy-duty, the diaphragms are still flexible and repeatable enough to match the ±2% accuracy of our other DP gauges.

1502DG/DGS Series
Differential Pressure Range: 0-10* to 0-300 psid
Max line pressure: 3000* psig (200 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 switch

Transmitters - Differential

1200 & 1300 Series

Orange Research
Best Seller
In Stock

Features: Our piston sensor models are for liquid applications where durability and long life are required. Their simple design has fewer parts to wear out and also keeps the price low. A magnet attached to the dial pointer shaft follows a spring-loaded sensor magnet that moves as differential pressure changes. In this way the DP displacement of the sensor is translated to our easy-to-read 2.5 to 6-inch diameter dials.

• Heavy duty — to 10,000 psi line pressure
• Weatherproof design and rugged construction
• Gauge, switch and transmitter versions
• Popular in filtration and flow measurements

1204, 1504 & 1804 XP Series

Orange Research

Features: Our Class 1, Div. 2 enclosures found throughout this catalog are popular for hazardous environments where explosive gases or vapors may be present. Our Class 1, Div. 1 Explosion-proof line, expands on that protection. The heavy-duty enclosures are designed to seal the electronics from environments where flammable gases or vapors often exist and to contain any potential explosions.

The switches and electrical connections are housed in special UL, CSA, FM and ATEX approved enclosures. The cast aluminum housings have two mounting lugs, two 3/4” NPT electrical conduit ports, and meet the following specifications: Class 1, Gr. B, C, & D; Class 2, Gr. E, F, & G; and Class 3. They also meet NEMA 3, 4X, 7, 9, & 12 specifications.

1500 & 1800 SERIES

Orange Research

Features: The popular 1516 model measures from 0-1 psid up to 0-50 psid. Our 1800 series models include our most sensitive diaphragm which can measure from 0-5”H2O to 0-8 psid.We also offer compound range models with a zero center. The diaphragm sensor separates the high and low pressure ports making them popular for gases as well as liquids. There is no bypass between these ports as with our piston models.

1516DG/DGS/DS Series
Differential Pressure Range: 0-1 to 0-50 psid
Max line pressure: 1500 psig (100 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 or 2 switches, Class 1 Div 2

1502 & 1533 SERIES

Orange Research

Features: Our 1502 and 1533 models have a heavy-duty diaphragm that is designed for high differential pressures, to 300 psid. This extends the range of our diaphragm sensor DP line – much higher than the more sensitive 1516 model. Though heavy-duty, the diaphragms are still flexible and repeatable enough to match the ±2% accuracy of our other DP gauges.

1502DG/DGS Series
Differential Pressure Range: 0-10* to 0-300 psid
Max line pressure: 3000* psig (200 bar)/200ºF (93ºC)
Accuracy: 2%
Porting: 1/4″ NPT
Electrical available: 1 switch

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