| Delta Controls Limited http://www.delta-controls.com/ Instrumentation, process control, pressure switch, temperature switch, pressure transmitter, temperature transmitter, fibre optics, flow, switches, transmitters. A Concentric company. | |
| DP Systems http://www.dpsystems.nl/ Manufacturers instrument protection enclosures in glass re-inforced polyester. | |
| DP Measurement http://www.ttseries.com/ Manufacturers of manometers, balometers, anemometers and other instruments. Also repair and calibrate. | |
| DMP Ltd http://www.fugatron.com/ Develops and sells instruments for gas phase concentration measurement, mainly for oxygen, hydrogen, carbon dioxide and humidity, and for hydrogen and oxygen dissolved gas analyzers. Switzerland. | |
| Custom Control Sensors http://www.ccsdualsnap.com/ Pressure, temperature and flow switches for the industrial and aerospace industries worldwide. | |
| Countronics http://www.countronics.com/ Manufactures process control equipment for indication, data-monitoring and control of parameters like temperature, time, item count, RPM, humidity, pH, conductivity and ORP. | |
| Cosa Instrument http://www.cosa-instrument.com/ Supplies industrial instrumentation equipment, including dewpoint hygrometers, trace moisture analyzers, relative humidity meters, titrators, and elemental analyzers. Facilities in New Jersey and Texas. Product list with brochures and specifications. | |
| Control and Process Instrumentation Contractors (CaPIC), Inc http://capicinc.com/ Electrical and mechanical installation, calibration, and startup of industrial instrumentation systems. List of services and reference customers. Pennsylvania, USA. | |
| Consense Corporation http://www.consense.com/ Manufacturer of passive surface water vapor condensation sensor and detector. | |
| Chell Instruments Limited http://www.chell-instruments.co.uk/ Manufactures, services and supplies products for pressure, vacuum, gas flow measurement and control. | |
| Cecomp Electronics http://www.cecomp.com/ Manufacture digital pressure gauges, digital vacuum gauges, digital pressure switches and indicating 4-20mA transmitters. | |
| Canongate Technology http://www.canongatetechnology.co.uk/ Manufacturer of process instruments and analysers, process automation and control and SCADA and graphics packages to the food, beverage, chemical and general process industries. | |
| Cambridge Sensotec Limited http://www.cambridge-sensotec.co.uk/ Manufacturers of oxygen gas sensors and portable gas analysers for a wide range of environmental gas monitoring. | |
| COMECO http://www.comecogroup.com/ A Bulgarian manufacturer of industrial control instrumentation including sensors, transmitters, controllers, panel meters and control equipment for temperature, level and humidity. | |
| Bronkhorst High-Tech B.V. http://www.bronkhorst.com/ Production and sales of high quality massflow and pressure meters/controllers for gas and liquid fluids. | |
| Bristol Babcock http://www.bristolbabcock.com/ Manufacturer of programmable controllers, process control systems, SCADA systems, correctors, gauges, pneumatic controllers and regulators, pressure switches, recorders , electronic recording ammeters and voltmeters, transmitters for pressure, flow and level. | |
| Beckhoff http://www.beckhoff.de/ Manufactures components for automation and control including TwinCAT NT-realtime system, bus terminal, industrial PC, Beckhoff-Lightbus. New automation technologies. | |
| Barksdale http://www.barksdale-usa.com/ Manufacturer of temperature switch pressure. | |
| Banner Engineering http://www.bannerengineering.com/ Produces photoelectric switches, ultrasonic sensors, and safety light curtains. | |
| Balluff Inc. http://www.balluff.com/ Manufacturer transducers, precision switches, and industrial sensors for the metalworking, automotive and plastics industries. | |