Pressure

Pressure Sensing Products

Gems offers a wide range of industrial pressure sensors, transducers, and switches. Each is ruggedly designed to address customer measurement challenges in hydraulics and pneumatics; water and wastewater; HVAC; OEM compressors and pumps; refrigeration systems; oil and gas; off-highway; machine tooling; medical gases; in-process control; and other applications.

Industrial pressure transducers are available with ratiometric output for continuous real-time monitoring. They are also offered in gauge, absolute, differential, vacuum and compound types, and in standard ranges from vacuum to 10,000 PSI. High-temperature and submersible versions are also available.

The Gems portfolio includes sputtered thin film, capacitance, and micromachined silicon (MMS) pressure transducers. These technologies support a diverse range of requirements. Capacitance-based pressure transducers, for example, are ideal for higher volume use. Sputtered thin film pressure transducers are specified where the highest possible measurement accuracy must be achieved.

Rugged industrial pressure switches from Gems provide basic “On/Off” functionality, either factory set point or adjustable, for a broad range of price and performance compatibility. Depending upon selection, units can offer over 1 million cycles of reliable service. Repeatability ranges are typically from 0.25 percent to 5 percent of the set point. The unique design of Gems pressure switches incorporates a special diaphragm/piston mechanism. This feature combines the benefits of high proof pressure piston technology with high repeatability, along with added resistance to vibration, pressure spikes, and temperature variations. A full family of water pressure switches is also available, with high-reliability over a standard range of 2 to 6000 PSI.

Available pressure switch enclosure options include aluminum, stainless steel, brass, reinforced plastic and zinc-plated steel. Wetted parts include choice of Buna-n, Teflon® coated Kapton®, stainless steel, PTFE, EPDM or Viton® diaphragm. Standard pressure port options include stainless steel, brass, zinc or aluminum. Extended ranges or other features are available upon request.

Visit our standard product catalog for an up-to-date listing of immediately available models. Most standard catalog pressure transducers and switches can be easily modified with alternate connectors and housings. In addition, a custom solution can be designed and manufactured in OEM volumes, often with lead times shorter than many industry off-the-shelf solutions.

Standard catalog products for pressure include:

Pressure Switches
- Sensing ranges from 2 to 6,000 psi (40 mbar to 400 bar)
Pressure Transducers
- Sensing ranges from 25,000 psi (-1 to 1,600 bar)

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Featured

Articles

Pressure Regulator, Solid State – 3100 Series Pressure Sensor

Traditional pressure regulators use a combination of internal nozzles and springs to regulate how much pressure an application will be exposed to down the service line. As the operator turns the mechanical adjusting knob, a certain amount of pressure is allowed to pass thru the regulator.

Breathing Apparatus (SCBA) – 3100 Series Pressure Sensor

Human safety is the number one priority when working in oil fields or in underground mines. Providing fresh air to the workers in these environments relies on several critical systems working correctly to ensure no harm comes to the workers.

Air Compressor, 809 Series Pressure Sensor

Rather than running extra electrical wires around a job site, compressed air is a very common source of low-pressure energy used in industrial applications.

Bench Testing a 35x Series Pressure Sensor with a Voltage or Non-Ratiometric Output

When you are troubleshooting an issue with your sensor or device, we strongly recommend completely removing it from your system to bench test.

Difference Between Absolute & Gauge Pressure Measurement

The difference between PSIG and PSIA is what they use as their reference pressure. The reference is the base line from which the measured pressure is compared.

Bench Testing a 35xx Series Sensor with a 4-20 mA output

Troubleshooting an issue with your pressure sensor or device.

UL Approvals for Pressure Sensors (1100, 3100 & 3200 Series)

Machinery and equipment that is used today are manufactured to high standards to ensure that the equipment cannot harm anyone

1100 Series Pressure Sensor with Harsh Agricultural (Ag) Chemicals

Agricultural sprayers utilize many different types of fluids and chemicals that are sprayed on crops. These fluids fertilize the crops to help them grow as well as keep pests off the plants to keep them healthy.

Dual Output Pressure Sensors (Pressure and Temp)

Did you know that Gems makes a pressure sensor with dual outputs? Yes, we do!! In many applications, a customer will want to measure both the pressure and the temperature of their application.

Pressure Sensor Warm-Up Time

Warm-up time for pressure sensors is a characteristic defined as the amount of time needed for the sensor to produce an output AND be within specification.

PS11 on X-ray machine cooling loop

As X-ray machines are becoming more and more sophisticated, the manufacturers are adding high-power electronics to the machines to add extra features and options

Accuracy Explained 3100 Pressure Sensor

Accuracy is defined as how close a measurement is to the actual, real world value. In the field of pressure sensors, accuracy is described as how close a sensor can produce an output in relation to the pressure that it is reading

Wheelchair Lifts using the PS71 Pressure Switch

Adding wheelchair lifts to automobiles and busses has been taking place for many, many years.

1100 Series Pressure Sensor Total Error Band Explained & Benefits

Total Error Band (or TEB) is a characteristic in pressure sensors that takes into consideration ALL of the potential errors that the sensor might exhibit, not just one error in particular.

4-20 mA Two-Wire Current Loop Basics

Many Gems sensor products offer a linear 4-20 milliamp (mA) output signal for transmitting to a receiver (meter/display, PLC, etc.) when measuring level or pressure.

Electrical Noise: Various Causes and How to Avoid Effects

Electrical noise is the source of many problems in control circuits. Signal and sensing circuits usually operate at lower voltage levels, and the lower that voltage is, the more vulnerable it is to noise.

Pressure Switches, Gold versus Silver contacts

Gems Sensors offers their mechanical pressure switches with two different types of internal electrical contacts: silver and gold.

Pneumatic Pressure Sensors: 1100 and PS41 series

Rather than running extra electrical wires around a job site, compressed air is a very common source of low-pressure energy used in industrial applications.

2200 vs. 2600 Pressure Sensors - What is the difference?

We are often asked: “What is the difference between the 2200 and 2600 series pressure sensors?”

Small Pressure Sensors for Power Crimp/Cutting Tools

As our infrastructure grows at a steady rate, the need for more efficient job-site tools is always present.

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Pressure Sensors