United Electric Controls introduces three new FM certified explosion-proof temperature sensor styles
Watertown, Massachusetts (November 6, 2025)
United Electric Controls introduces three new FM certified explosion-proof temperature sensor styles
UE’s Applied Sensor Technologies division is adding three FM certified explosion-proof styles to its temperature sensor portfolio. The styles are available as a 100Ω RTD or mineral insulated thermocouple. FM certification for hazardous areas applies to the complete assembly – both sensor and terminal head. This is an important distinction since common practice has been to pair an explosion proof rated terminal head with an unrated RTD or thermocouple, assuming suitability for hazardous locations. If installed in a hazardous area, this combination would require the unrated sensor with the rated terminal head to be certified as part of the overall system to ensure compliance. These three new FM Certified styles ensure hazardous location compliance as a stand-alone device.
The new styles are as follows:
Style 79 that is available as a 100Ω RTD. This is a new design derived from a popular temperature sensor model used on UE’s ONE Series electronic switch and transmitter product line. This is a temperature monitoring option for applications where a display and set point (i.e. ONE Series) are not required.
Style 83 that is available as either a 100Ω RTD or mineral insulated thermocouple with spring-loaded sheath.
Style 84 that is available as either a 100Ω RTD or mineral insulated thermocouple with a welded process connection.
Style 79 Style 84 Style 83
Related Documentation
Datasheets:
RTD: FM Certified Explosion Proof Assembly
Thermocouple: FM Certified Explosion Proof Assembly
Installation & Operation Manuals
Style 79 Explosion-Proof RTD Assembly with Remote Cable Assembly
Style 83 Explosion-Proof RTD and Thermocouple Assemblies with Spring Loaded Sheath
Style 84 Explosion-Proof RTD and Thermocouple Assemblies with Welded Process Connection
Certifications
Canadian Certificate of Conformity
Europe EU-Type Examination Certificate (ATEX)
Global IECEx Certificate of Conformity
Please contact Sales Application Engineering at +1 617 923-6977 or insidesales@ueonline.com for questions, and technical or application assistance.
About United Electric Controls
United Electric Controls (UE), and its divisions, Applied Sensor Technologies and Precision Sensors, are international manufacturers of durable and reliable WirelessHART® toxic and combustible gas detectors, pressure and temperature switches, transmitters, controls and sensors. UE is a privately held corporation headquartered in Watertown, Massachusetts, USA.
