About Pressure Gauges
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About Pressure Transmitters
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Low-Pressure Differential Gauges with Color Indicator
A band of green, yellow, and red provides a clear indication of changes in differential pressure. Gauges are commonly used to indicate clogged filters.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, and Acetylene
- Accuracy: ±5% Full Scale (Not Graded)
Pressure Range, psi | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Green Band | Yellow Band | Red Band | Max. Pressure, psi | Environment Temp. Range, °F | Process Temp. Range, °F | Ht. | Wd. | Dp. | Case Color | Each | |
NPT Female | ||||||||||||
1/4 | 0-2 | 2-2.5 | 2.5-3.5 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 0000000 |
1/4 | 0-3 | 3-4.5 | 4.5-5 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 000000 |
1/4 | 0-6 | 6-9 | 9-12 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 000000 |
1/4 | 0-7.5 | 7.5-12 | 12-15 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 000000 |
1/4 | 0-13 | 13-20 | 20-30 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 000000 |
1/4 | 0-19.5 | 19.5-29.5 | 29.5-43 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 000000 |
High-Pressure Differential Gauges
These gauges are able to withstand line pressures up to 3,000 psi. They are commonly used to measure pressure differences in pumps and filters.
Gauges with 316 stainless steel case are more corrosion resistant than gauges with an aluminum case.
For technical drawings and 3-D models, click on a part number.
- For Use With: Water, Hydraulic Fluid, and Gasoline
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
2 1/2" Dial Diameter | ||
0 to 10 | 0.5 | 2 |
0 to 15 | 1 | 3 |
0 to 20 | 1 | 5 |
0 to 25 | 1 | 5 |
0 to 30 | 2 | 10 |
0 to 40 | 2.5 | 10 |
0 to 50 | 2.5 | 10 |
0 to 100 | 5 | 20 |
4 1/2" Dial Diameter | ||
0 to 10 | 0.5 | 2 |
0 to 15 | 0.5 | 3 |
0 to 20 | 1 | 5 |
0 to 25 | 1 | 5 |
0 to 30 | 1 | 10 |
0 to 40 | 2 | 10 |
0 to 50 | 2.5 | 10 |
0 to 100 | 5 | 20 |
- For Use With: Water, Hydraulic Fluid, and Gasoline
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
2 1/2" Dial Diameter | ||
0 to 10 | 0.5 | 2 |
0 to 15 | 1 | 3 |
0 to 20 | 1 | 5 |
0 to 25 | 1 | 5 |
0 to 30 | 2 | 10 |
0 to 40 | 2.5 | 10 |
0 to 50 | 2.5 | 10 |
0 to 100 | 5 | 20 |
4 1/2" Dial Diameter | ||
0 to 10 | 0.5 | 2 |
0 to 15 | 0.5 | 3 |
0 to 20 | 1 | 5 |
0 to 25 | 1 | 5 |
0 to 30 | 1 | 10 |
0 to 40 | 2 | 10 |
0 to 50 | 2.5 | 10 |
0 to 100 | 5 | 20 |
Medium-Pressure Differential Gauges
Popular for use with natural gas, these gauges measure pressure differences in pipelines and filters with a maximum pressure of 1,500 psi.
Gauges with 316 stainless steel case are more corrosion resistant than gauges with an aluminum case.
For technical drawings and 3-D models, click on a part number.
- For Use With: Water, Hydraulic Fluid, Gasoline, and Natural Gas
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
0 to 2 | 0.1 | 0.5 |
0 to 5 | 0.25 | 1 |
0 to 10 | 0.5 | 2 |
0 to 15 | 1 | 3 |
- For Use With: Water, Hydraulic Fluid, Gasoline, and Natural Gas
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
0 to 2 | 0.1 | 0.5 |
0 to 5 | 0.25 | 1 |
0 to 10 | 0.5 | 2 |
0 to 15 | 1 | 3 |
Differential Pressure Transmitters with Dial Indicator for Liquids
- For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid, Water
- Accuracy: ±2%
- Pipe Connection: NPT Female
- Housing Material: Brass
- Connection Material: Brass
- Temperature Range: -20° to 200° F
View readings at the source with the dial indicator or remotely using a receiver—these transmitters measure the difference in pressure between two inputs in liquid applications. The dial indicator operates independently of the transmitter and shows differential pressure in real time for troubleshooting. Also known as transducers, these transmitters convert pressure to an electrical signal that is interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. You’ll sometimes see them used to indicate a filter is clogged in a pump or cooling system. Rated NEMA 4X, these transmitters protect against dirt, washdown, and corrosion. They are also rated IP65 for protection from dust and rinsing. All are CSA certified, so they meet Canadian safety standards.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. As differential pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
For technical drawings and 3-D models, click on a part number.
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA, 0-5V DC Output Signal—Screw Terminals | |||||||||||
0-25 in. of H2O | 1,500 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2" | 4 7/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 0000000 |
0-1 psi | 1,500 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2" | 4 7/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 000000 |
0-5 psi | 1,500 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2" | 4 7/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 000000 |
0-15 psi | 5,000 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2 5/8" | 2 15/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 000000 |
0-30 psi | 5,000 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2 5/8" | 2 15/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 000000 |
0-50 psi | 5,000 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2 5/8" | 2 15/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 000000 |
Differential Pressure Transmitters with Electronic Switch Outputs
- For Use With: Air, Hydraulic Fluid, Water
- Accuracy: ±0.5%
- Pipe Connection: NPT Female
- Housing Material: Glass-Reinforced Polyester
- Connection Material: 316L Stainless Steel
- Temperature Range: 14° to 158° F
Get the flexibility of a differential pressure transmitter and a switch in one. These transmitters can work as a traditional transmitter using an analog output but also have electronic switch outputs and IO Link compatibility, making them great for advanced automation applications. Also known as transducers, they measure the difference in pressure between two inputs and convert it to electrical signal. Connect them to your programmable logic controller or receiving device to monitor differential pressure remotely, activate automated controls, or trigger alarms when they reach the set pressure. A digital display lets you monitor the differential pressure and troubleshoot issues at the source. It rotates for readability.
You’ll often see these transmitters used to indicate a clogged filter or help maintain a certain pressure in HVAC systems, pumps, and cooling systems. NEMA and IP rated, they protect against dirt, dust, corrosion, weather, washdowns, and temporary submersion.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. As differential pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range.
For technical drawings and 3-D models, click on a part number.
Configurable Analog Transmitter Output | Configurable Digital Switch Output | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range, psi | Max. Input Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | No. of | Signal | No. of | Signal Type | Mounting Hardware Included | Dia. | No. of | Environmental Rating | Each | |
5-Pole Micro M12 Plug Connection | |||||||||||||||
0-15 | 2,500 | 15-32V DC | 1/4 | 4 13/16" | 3" | 1 | 0-10V DC, 4-20 mA | 2 | PNP, NPN | No | 3/16" | 2 | IP65, IP67, NEMA 4X, NEMA 6 | 0000000 | 000000000 |
0-100 | 2,500 | 15-32V DC | 1/4 | 4 13/16" | 3" | 1 | 0-10V DC, 4-20 mA | 2 | PNP, NPN | No | 3/16" | 2 | IP65, IP67, NEMA 4X, NEMA 6 | 0000000 | 00000000 |
0-500 | 2,500 | 15-32V DC | 1/4 | 4 13/16" | 3" | 1 | 0-10V DC, 4-20 mA | 2 | PNP, NPN | No | 3/16" | 2 | IP65, IP67, NEMA 4X, NEMA 6 | 0000000 | 00000000 |
Differential Pressure Transmitters for Liquids
Used with pumps, cooling systems, and other liquid applications, these transmitters remotely measure the difference in pressure between two inputs. They are also known as transducers. These transmitters convert differential pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. You’ll often see them used to indicate a filter is clogged.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
IP56 rated transmitters protect against some dust and washdowns. IP66 rated transmitters are dust tight and protect against washdowns. NEMA 4 rated transmitters protect against weather and washdowns. NEMA 4X rated transmitters protect against weather, washdowns, and corrosion.
- For Use With: Hydraulic Fluid, Water
- Accuracy: ±1%
- Pipe Connection: NPT Female
- Connection Material: Brass
- Temperature Range: 32° to 122° F
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | |||||||||||
0-1 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000000 |
0-3 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
0-5 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
0-10 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
0-25 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
0-1 psi | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
- For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid, Water
- Accuracy: ±0.5%
- Pipe Connection: NPT Female
- Connection Material: 316 Stainless Steel
- Temperature Range: 0° to 200° F
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range , psi | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | |||||||||||
0-5 | 50 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 0000000 |
0-10 | 50 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
0-25 | 120 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
0-50 | 250 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
0-100 | 500 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
0-150 | 750 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
Hazardous Location Easy-Setup Differential Pressure Transmitters
- For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water
- Accuracy: ±0.075%
- Pipe Connection: NPT Female
- Housing Material: Aluminum
- Connection Material: Hastelloy
- Temperature Range: -40° to 185° F
Safe for use in environments where flammable gases and vapors are present, these transmitters measure the difference in pressure between two process lines without needing to program your receiving device to correct for errors. They meet NEC safety standards for protection against an explosion. These transmitters automatically compensate for errors caused by vibration and temperature changes. Set the pressure range with the keypad, select the unit of measure, and zero the transmitter. They convert differential pressure into an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers (PLCs), and motor speed controls, to monitor pressure or control equipment. You’ll often see them used to indicate a clogged filter or help maintain a certain pressure in heat exchangers, chillers, HVAC systems, and pumps. Rated IP66 and NEMA 4X, they protect against dirt, dust, corrosion, weather, and washdowns, and the hastelloy connection protects against harsh chemicals.
Transmitters will only provide accurate readings within the rated pressure range. Most often, these transmitters connect using two wires. The same wire that sends a signal to the receiver also powers the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices. Three- and four-wire configurations are also possible.
For technical drawings and 3-D models, click on a part number.
Mounting Holes | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Communication Protocol | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | ||||||||||||
0-25 in. of H2O | 3,625 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 000000000 |
0-200 in. of H2O | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 00000000 |
0-1,000 in. of H2O | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 00000000 |
0-150 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 00000000 |
0-450 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 00000000 |
0-1,500 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | NEC Class I Divisions 1, 2 Groups A, B, C, D; IP66; NEMA 4X | 0000000 | 00000000 |
Easy-Setup Differential Pressure Transmitters
- For Use With: Air, Hydraulic Fluid, Water
- Accuracy: ±0.075%
- Pipe Connection: NPT Female
- Housing Material: Aluminum
- Connection Material: Hastelloy
- Temperature Range: -40° to 185° F
Measure the difference in pressure between two process lines without needing to program your receiving device to correct for errors. These transmitters automatically compensate for errors caused by vibration and temperature changes. Use the keypad to set the pressure range, choose the unit of measure, and zero the transmitter. These transmitters convert differential pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. They're often used to indicate a filter is clogged or to maintain a certain pressure in HVAC systems, heat exchangers, chillers, and pumps. All transmitters meet IP66 and NEMA 4X for use in washdown and corrosive environments and have a hastelloy diaphragm to resist harsh chemicals.
Transmitters will only provide accurate readings within the rated pressure range. These transmitters connect using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices. They can also be configured using three or four wires.
For technical drawings and 3-D models, click on a part number.
Mounting Holes | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Communication Protocol | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | ||||||||||||
0-25 in. of H2O | 3,625 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 000000000 |
0-200 in. of H2O | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 00000000 |
0-1,000 in. of H2O | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 00000000 |
0-150 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 00000000 |
0-450 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 00000000 |
0-1,500 psi | 5,800 | 11-55V DC | 1/4 | No | 7/16" | 8 | 7 7/8" | 5 1/4" | HART | IP66, NEMA 4X | 0000000 | 00000000 |