Pressure Transmitters and Switches operate in hazardous areas.

Press Release Summary:

Available in 7 ranges from 0–10,000 psi, Model 3800 Series Pressure Transmitters offer 5 ms response times with choice of loop-powered 4–20 mA or low-power 1–5 Vdc output. Units have NEMA4X/IP66 housings, stainless steel wetted parts, and hermetically sealed enclosures without O-rings. Providing 4–20 mA standard output and optional 1–5 Vdc output, all stainless steel Model 3820 Series OEM Pressure Switch-Transmitters add 30 V, 120 mA normally open solid state relay switch with ±2% URL accuracy.

Original Press Release:

Gems Sensors & Controls Announces Global Market Launch of High-Reliability OEM Pressure Transmitters and Switches for Hazardous Area Environments

Plainville, CT, USA – Gems Sensors & Controls (Gems) (, an ISO9001:2008 and ISO13485 certified leading supplier of standard and custom liquid level, flow and pressure switches, miniature solenoid valves, and preassembled fluidic systems, has announced the global market launch of its Model 3800/3820 Series.

The new Gems Model 3800/3820 Series is a family of reliable, accurate, compact OEM pressure transmitters and switches for hazardous area and other hostile environments.

The new Model 3800 Series pressure transmitter is available in seven unique ranges from 0 to 10,000 PSI (0 to 689 bar), with choice of loop powered (4-20 mA) or low power (1-5 VDC) output. They offer a ±0.25% URL (BFSL) linearity, hysteresis and repeatability specification, with less than 5 millisecond response times. Depending upon selected range, burst pressures extend from 4x up to 40x FSPR, with 2x or 3x overpressures. Model 3800 Series units also feature NEMA4X IP66 housings, all stainless steel wetted parts and hermetically sealed enclosures without O-rings. Dual seal approval and flush mounting are optional. They are also field adjustable with a 5:1 turndown ratio (2:1 for 100 PSI). Zero and span calibration adjustments may be achieved via a Gems calibration kit and a USB communication cable, sold separately.

The new Model 3820 Series is an all stainless steel OEM pressure switch-transmitter. Featuring a standard 4-20 mA output and optional 1-5VDC output, it builds upon the many performance attributes of the Model 3800, with the addition of a 30V, 120 mA normally open solid state relay switch with ±2% URL accuracy. Both the pressure switch set points and pressure measuring range are field adjustable via the optional calibration kit.

All Model 3800/3820 Series units are CE, FM and ATEX approved and are accompanied by a three-year comprehensive product line warranty. Optional cleaning for oxygen service prior to shipment is also available. As standard catalog product, the Model 3800/3820 Series is available for online order via Test samples can typically ship within a few business days. Gems also has full in-house capabilities for custom OEM volume design and manufacturing to meet unique requirements. Custom sensors can often be produced in shorter lead times than can be found among many other industry off-the-shelf solutions.

For more information about the new Model 3800/3820 Series or other pressure sensing instrumentation offered by Gems Sensors & Controls, please contact the company on +1-855-877-9666, via email at, or visit

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