Flow Sensors

Monitoring of flow processes



  • Sensor and evaluation in a separate housing, or
  • Different thread types in stainless steel
  • Easy commissioning through teach-in
  • Safe state detection with maintenance-free operation
  • Corrosion resistant Vollkunstoffgehäuse
  • Easy commissioning through teach-in
  • Maintenance-free operation
  • M32 screw for pressure-resistant mounting possible
  • Adjustment by potentiometer or teach-in
  • Various versions available

Functions and applications of Proxitron flow sensors

Flow sensors Proxitron can monitor the flow rate of liquid or gaseous media, enabling a simple and effective control of flow processes. Basis of this sensor system is the calorimetric principle.Similar to the cold feel of a finger in the wind, the cooling of a surface is used by a medium flowing past. With a flow sensor, the sensor surface is heated to a defined temperature. If this surface is exposed to a flow, the Senor surface cools. A greater flow leads to a greater cooling and serves as a measure for the flow speed. The cooling effect of the flow is electronically evaluated and the flow sensor supplies depending on model a hereupon based output signal, which can be used for flow monitoring. The applications of flow sensors are diverse, ranging from the general air conditioning systems, exhaust systems, to monitoring of cooling and lubricant circuits. In contrast to the indirect flow control by controlling the rotational movement of a fan or pump, is on this principle directly controls the flow of the medium and thus enables the detection of dirty filters and blockages or blockages in the flow circuit. The adjustable flow value can be an early warning of falling below a minimum flow supply and so z. B. initiate timely maintenance of air conditioning. Due to an absolutely maintenance-free and wear-free operation Proxitron flow sensors in comparison with other sensor systems such as wind vanes and vane anemometers relays are superior and are preferably used where safe and trouble-free flow control is required.

flow sensors

The construction of the sensors in a seamless closed housing predestined these particularly suitable for use in environments withhigh contamination levels . Proxitron Air flow sensors (air flow monitor) in solid plastic housing are everywhere at home, where aggressive chemical atmospheres prevail. They resist even containing sulfuric exhaust of electroplating bathswork and many years of trouble free. flow sensors Proxitron are available in various designs. In principle, between sensors for monitoring gaseous and liquid media distinguished.

Flow sensors for gases (also called air flow monitor) are in most cases provided with a compact plastic housing that the easy installation allows in existing exhaust ventilation or ventilation systems. The Flow sensors for liquids have stainless steel process connections in the common pipe thread sizes. Available in both cases variants for AC or DC operating voltage , with different switching output types or with analog output . The units are delivered with a fixed connection cables of different lengths or with conventional M12 connector. Proxitron flow sensors are also characterized by their ease of use from. On push of a button , the sensor will detect the existing flow and represents the flow limit so that a stall is detected. This has diverse applications in different industries, but also in the HVAC and building automation. A matching accessories completes the program and also allows for the flameproof installation of the sensors. Wherever a powerful, yet cost-effective solution is required for flow monitoring, we provide you with our know-how.

Special Features

  • maintenance-free
  • wear
  • compact design
  • ease of use
  • low cost
  • AC and DC operating voltage
  • different circuit variations
  • 0-10 V or 0/4 to 20 mA output
  • various stainless steel process connections
  • chemically resistant solid plastic housing


  • Refrigerant circuits
  • Exhaust control
  • HVAC
  • Extraction
  • Injecting lubricants
  • Inflow and outflow of fluids
  • Pump control
  • Filter monitoring
  • Bearing cooling
  • Building
  • Electroplating
  • Chemical Industry
  • Laboratory and education institution
  • Sewage treatment plants
  • Offshore
  • Food industry
  • Shipbuilding
  • Woodworking
  • Cogeneration
  • Paper processing
  • Computer center
  • Nuclear Research
flow sensors