Sitron introduced our first Thermal Dispersion Flow Switch in 1995.  Thermal Dispersion technology provides liquid and gas flow detection with no moving parts and a much greater working life-span when compared to other technologies.  While our original flow switch has been updated and improved upon over the years, one thing has not changed; the CF12 series continues to offer maintenance free reliability for most liquid flow or gas flow applications at a very reasonable price.

Like all of Sitron’s products, the CF12 can be configured to accommodate our customer’s unique process control requirements.  Offered in either glass filled nylon, aluminum or 316SS housings, all models can also be ordered with a great variety of threaded, flange, or sanitary process connections as well as Halar or epoxy coating for aggressive mediums or even with separate electronics and process sensor.  While the CF12 is designed to monitor flow status of liquids and gases, it is often used to detect the level of liquid mediums as well.

CF12 - Chave de fluxo thermal por dispersão térmica

Application: Flow Switch for Liquids and Gases /
Operating Voltage: CF12 AC: 85-240Vac (50/60hz) ou CF12 DC: 24Vdc (+/-10%)
Current Consumption: +/- 100mA
Output: Relay (SPDT)
Set Point Range: Liquid: 3 cm/s to 3 m/s - Gas: 5 cm/s to 5 m/s
Accuracy: +/- 10%
Repeatability: +/- 1% setpoint
Response Time: 1 to 10s
Gradient Temperature: 15ºC/min
Flow Rate Indication: Red led - flow is below setpoint Yellow led - flow is at setpoint Green led - flow is above setpoint
Enclosure Material: N1-Glass filled nylon, G1/G2/G3-Aluminum, A1/A2-316S.S.
Electrical Connection: Cable gland w/ 2000mm cable, M12 connector or ½” NPT
Process Connection: BSP or NPT, adjustable, sanitary or flanged connections
Wetted Material: 316 Stainless Steel or Halar Coating
Operating Temperature: 14 to 176º F (-10 to 80ºC) or extended neck to 248ºF (120ºC)
Max Pressure: 100 Bar (others upon request)
Class Protection: IP65 to IP67 (IEC 60529) (see models)

Documentation for download

  • Pump protection
  • High flow alarm
  • Low flow alarm
  • HVAC monitoring
  • Leak detection
  • Supply line control
  • Fill/Drain control
  • Lubricant monitoring
  • Cooling water monitoring
  • Heat exchanger control
  • On/Off valve monitoring
  • Oil flow detection
  • Air flow monitoring

No video is available at this time for this item.

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