CF12EX Proof Flow Switch
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EX Proof Flow Switch Characteristics - Explosion-proof housing (EX d). - Robust with no moving parts. - Corrosion resistant 316SS Body - Can be Halar coated to corrosive and aggressive media - Excellent sensitivity at low flow - Quick response time for flow or level - Protection Class: IP66 (IEC 60529) - Set-Point Range: 3cm/s to 3m/s (Liquids) 5cm/s to 5m/s (gas) - Signal Output: Relay 2x SPDT - Protection: Reverse Polarity Voltage Surge Electromagnetic Interference - Various types of process connections: Thread, Flange and Sanitary Description The CF12 Thermal Dispersion Flow Switch with Ex-Proof (GX) housing comes standard with either an AC or DC power supply (CF12AC or CF12 DC). This unit offers reliable liquid and gas flow detection ideally suited for just about any Flow/ No Flow application. Unlike the CF12 with either the small nylon housing (N1) or the small aluminum housing (G1), the CF12 with large aluminum housing (G2 & GX) comes with two independent SPDT relays. Like all of Sitron’s products, the CF12 can be configured to accommodate our customer’s unique process control requirements. All models can be ordered with a great variety of threaded, flange or sanitary process connections as well as Halar for aggressive mediums. The CF12 is also offered with extended necks for higher temperature applications up to 120ºC. And while the CF12 is designed to monitor flow status of liquids and gases, with its no moving parts technology it can also be an ideal solution for liquid level detection. The GX comes standard with a glass window which enables visualization of LED switch status. The GX housing comes with the following certifications: UL, cUL, IECEX and ATEX for installation in hazardous environments.

Power Supply: AC: 85...264Vac (50/60hz) and 125Vdc DC: 24Vdc (± 10%) Consumption: 130mA Output: Relay (2 SPDT) 5A - 250Vac Measuring Range: Liquids: 3cm/s...3m/s Gas: 5cm/s...5m/s Accuracy: ± 10% Response time: 1...10 sec Temperature Gradient: 15°C/min Indication: Bargraph 8 led´s Flow indication (LED): Red = Flow below the set point Yellow = set point (Relay ON) Green = flow above the set point Housing: Aluminum painted (blue) with glass viewing window Electrical Connection (cable entry): 2 x 3/4” NPT Process Connection: BSP, NPT, flange or Sanitary Body Material: 316S.S (Halar coating)...

Extended Neck for Higher Temperatures Insertion Length Providing the measure (L) as illustrated: Technology The CF12 line of flow switches utilize the principle of thermal dispersion. A typical configuration for this flow switch technology incorporates at least two temperature resistance detectors (RTD's), installed within the tip of the sensor. One of the sensors is heated and the other is used as a reference by monitoring the fluid temperature. As the medium (air or fluid) flows over the sensor tip, there is a dispersion of thermal energy which is inversely proportional to the flow. The...

Order Code MODEL Flow Switch / 2 SPDT / Power supply 85...264Vac (50/60hz) and 125Vdc Flow Switch / 2 SPDT / Power supply 24 Vdc PROCESS CONNECTION TYPE B BSP D FLANGE ANSI 150# - Carbon Steel Painted E FLANGE ANSI 150# - 316 SS F FLANGE ANSI 150# - PVC _G FLANGE ANSI 300# - Carbon Steel Painted _H FLANGE ANSI 300# - 316 SS J FLANGE ANSI 300# - PVC K FLANGE ANSI 150# - 304 SS L FLANGE ANSI 300# - 304 SS | M Metric Thread _N NPT R SMS Female _S SMS Male _J TRI-CLAMP Y FEMALE DIN - 316SS OTHER - SPECIFY INSERTION LENGTH GXALUMINUM w/ GLASS WINDOW (2 SPDT) 5A-250Vac (Ex d) ELECTRICAL...