- ACT Corporation
 - Manufacturer and supplier of pressure switches for hydraulic, pneumatic, and vacuum applications. - ACT Liquid Level Sensors
- Manufacturers of sensors for liquid level, temperature, pressure, flow, speed, position, and conductivity.
- Alltemp Sensors - WIKA Instruments
- Manufacturer of thermocouple and RTD sensors, explosion-proof assemblies, and thermowells. Other products include: temperature transmitters and gauges, pressure gauges, wire and cable, and instrumentation.
- Analog Devices: Temprature Sensors
- Offers analogue and digital temperature sensors with I2C, SPI, mark-space, and trip-point interfaces.
- Atmos Engineering, Inc.
- Digital output, tilt, humidity, and pressure sensors.
- BEI Edcliff Instruments Division
- Makes pressure sensors and transmitters, transducers, and more, designed for the industrial, medical, energy, and aerospace industries.
- Bimet Corporation
- Appliance thermostats and thermal controls.
- C & G Industrial Supply
- CGS Thermodynamics
- Manufactures semiconductor and industrial temperature sensing devices.
- Comark LTD & Comark Inc
- Manufactures thermometers, probes, and loggers for general use and food safety.
- Crystal Engineering Corporation
- High quality, easy-to-use, portable digital pressure calibrators.
- Dacell
- Load cell manufacturer offering a complete range of load cells and related products for manufacturers.
- Danfoss Comfort Controls Division
- Manufacturer of radiator thermostats, offering climate control products such as floor and solar heating controls.
- Druck Group, The
- Pressure sensors, tranducers, transmitters, portable calibrators, primary and secondary standards, aviation test equipment, deadweight testers.
- Dynisco Instruments
- Manufacturer of pressure/temperature transducers, transmitters, and instrumentation.
- Ebtron Incorporated
- Electronic sensors for IAQ and building pressurization.
- Engineered Sensors Tedeco Products
- Manufactures condition monitoring equipment for lubrication, hydraulic, and fluid systems.
- Falmouth Scientific, Inc.
- Develop and manufacture conductivity, temperature, pressure, thermosalinographs, acoustic current meters, water samplers, telemetry systems, dataloggers.
- Fiso Technologies
- Fibre optic temperature sensor ideal in presence of high voltage (transformers), EMI (thermotherapy), microwave and induction heating.
- Futek Advanced Sensor Technology, Inc
- Manufacturers of load cells, force, torque, and pressure sensors. Services include instrumentation, calibration, and design consultation.
- Gems Sensors
- Liquid level sensors, flow sensors, and pressure sensors.
- George Ulanet Company
- Specialises in bimetal thermostats, immersion heaters, and electric heating elements.
- Gulf Sensors, Inc.
- Design and manufacture of thermocouples, RTD's, and thermowells for the petrochemical, refining, and process industries. Featuring an online catalogue.
- Hot Little Therm
- >200 remote temperature probes per serial port, with free Unix/DOS software
- Integrated Sensor Solutions, Inc. (ISS)
- Pressure sensors for automotive and industrial applications. ASIC products for sensor signal conditioning.
- Intersema Sensoric SA
- Range of silicon pressure sensor products for the consumer and industrial markets.
- JLC International
- Supplier of humidity sensors and transmitters, hygrometers and dewpoint meters, gas and liquid flowmeters, air velocity transmitters and switches, and pressure, differential pressure and level transmitters.
- Lifetime Filter
- Offers electrostatic air filters, thermostats, and smoke alarms.
- Marathon Products, Inc.
- Manufacturer of temperature recording instruments for stationary and in-transit temperature monitoring.
- Minco Products
- Temperature sensors, flexible heaters, controllers, transmitters and flexible printed circuits.
- Precision Measurement Company
- Manufactures miniature pressure transducers and load cells, extensometers, as well as transducer and strain indicators for academic institutions, research laboratories, as well as industry.
- Pyromation Inc.
- Fire safety products, thermocouples, resistance temperature detectors, and special purpose temperature sensors.
- RTD Company
- Designs custom temperature sensors, RTDs, thermocouples, and components.
- Sensatronics
- Makers of TempTrax, a temperature tracking device that connects to computers via serial port. Runs on Linux or Windows. Use included software or embed in another application.
- Sensing Devices
- Manufactures platinum resistant temperature detectors (RTD's) and industrial transfer standard thermometers in addition to calibration services.
- Sensonetics, Inc.
- Manufactures silicon on sapphire temperature and pressure sensors for plastic melt, index, downhole, oilwell, submersible, transmitter, and transducer applications.
- Sensorsoft Corporation
- Low cost temperature monitoring of remote locations (PC/Unix)
- Silvertree Engineering, Ltd.
- Temperature and humidity monitoring using wireless connections (radio-linked sensors).
- Tekscan
- Specialises in thin-film tactile pressure and force sensors, systems, and enabling electronics.
- Temp-Pro, Inc.
- Temperature sensing products.
- Texas Instruments Sensors and Controls
- Manufactures pressure sensors for HVAC/R, automotive, and industrial markets.
- Therm-O-Disc, Incorporated
- Manufacturer of bimetal disc thermostats, temperature controls, thermal cutoffs, PTC and NTC thermistors, temperature sensors and electric switches in standard and custom designs.
- ThermoProbe, Inc.
- Precision portable electronic thermometers for inventory control of bulk petroleum, etc.
- Thermostat Shack
- Sells replacement thermostats and gaskets for Yamaha marine engines.
- Thermtrol
- Manufacturer of thermostats and thermal protedtors, including probe thermostats, SH7AM and 7AM thermal protectors, bulb and capillary thermostats.
- Transducers Direct
- Provides positioning and pressure transducers, pressure switches, Time to Digital Converters (TDC), and more for a wide range of industrial applications.
- Uptime Devices, Inc.
- Offers network enabled sensors including temperature, humidity, water, security, and power with e-mail alerts, snmp traps, data collection, and graphing.
- Vatell Corporation
- Development and production of high precision thermocouples and heat flux sensors.
- Warren G-V
- Solid state air flow and temperature sensors for thermal control utilized in commercial and military applications.
- White-Rodgers
- Makers of residential thermostats, air cleaners, control valves, and igniters for gas appliances.
- Wooree Electronics
- Manufactures digital and custom temperature controllers, thermostats, thermocouples, and sensors.
- XCO International Incorporated
- New temperature sensing devices.
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