TE Connectivity introduces the M3200 pressure transmitter

      The M3200 pressure transmitter from TE Connectivity (TE), a global leader in connectivity and sensing technology, uses advanced Microfused technology. As the latest member of TE's large family of pressure transmitters, the M3200 combines micromachined silicon piezoresistive strain gauges with high-temperature glass and stainless steel membranes to create a unique pressure transmitter front end that is more reliable than conventional products.

     Pressure transmitters are an integral part of most heating, ventilation and refrigeration (HVACR) systems, not only helping them maintain a comfortable indoor climate, but also improving the energy efficiency of HVAC systems. In addition, they enable integration of HVAC systems with building automation systems.

     Traditional HVAC systems use pressure and temperature sensors and switches to control basic system operations, such as opening or closing the system, opening or closing valves or vents. As HVAC systems have to become more efficient, there is a pressing need for more fine-grained control of different subsystems. This has led to numerous technological advances, such as variable refrigerant flow, variable speed motors and blowers, electronic expansion valves, and many other control methods for fine-tuning systems and reducing total energy consumption.

     The most common sensors in HVACR systems are temperature and pressure sensors, but now humidity sensors, gas sensors and other sensing technologies are also being used more frequently. The stable operation of the sensor can not only maintain a comfortable indoor temperature, improve the work efficiency of personnel, but also effectively save food and drugs that have strict requirements for environmental temperature. The importance of sensors in HVACR systems can be seen.

     In HVACR systems, on-board pressure sensors are used to detect pressure in filters and air-heated central systems, while heavy-duty pressure sensors are used to monitor refrigerant pressure, or water pressure in large commercial chiller or other liquid pressures. Whether commercial or domestic HVACR systems, sensors are exposed to harsh operating environments. With high temperature fluctuations, high humidity, and high noise, HVACR systems need sensors that are stable enough to maintain continuous operation and provide accurate, repeatable readings.