About Pressure Gauges
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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 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 | 0-13 | 13-20 | 20-30 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 0000000 |
Hazardous-Location Submersible Liquid-Level Transmitters


FM and C-FM approved, these transmitters safely measure liquid levels where explosive gas or dust may be present. Set them at the bottom of your tank in applications that make traditional mounting difficult. They sense liquid levels by measuring the pressure from the weight of the liquid above them. All continuously send measurements, so you can monitor status and manage components in your system. Also known as level loggers, level sensors, and pressure transducers.
Transmitters for liquids with solids have an unobstructed sensing element that resists clogging and sludge buildup in water with particulate and sewage.
For Pressure Range | Overall | Temp. Range, °F | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ft. of H2O | psi | Accuracy | Max. Pressure | Lg. | Dia. | Min. | Max. | Cable Lg., ft. | Input Voltage | For Container Type | Electrical Connection | Environmental Rating | Each | |
4-20mA Output Current | ||||||||||||||
For Liquids | ||||||||||||||
0-30 | 0-13 | ±0.25% | 125 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 0000000 |
For Liquids with Solids | ||||||||||||||
0-30 | 0-13 | ±0.25% | 125 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |