The robust, microprocessor-supported electronic pressure switches in the FEMA Smart series measure relative pressures in ranges from -1 to +1 bar and 0-40 bar. They are particularly suitable for controlling system pressures in the fields of mechanical engineering, supply engineering, environmental technology and HVAC. The equipment can be installed directly in the pressure line using the G1/2 external thread. Entering switching points is easy with the generously proportioned keyboard and graphic display. For OEM applications, devices can be supplied with fixed parameter and switching point adjustment.

* HMI = Human Machine Interface (digital display + data input via buttons).

Functions

• Configuration of open collector switching output as:
  • minimum pressure monitor
  • maximum pressure monitor
  • pressure window monitoring
• Configuration of switching contact as:
  • normally closed
  • normally open
• Setting the switching and reset point over the entire pressure range
• Switch on/off delay
• Simulation mode
• Easy configuration via display and buttons
• Optional CFT1 software allows simple configuration via PC computer
• Rotatable graphic display in 90º steps
• Current pressure display
• Switching state display
• Two-colour background lighting for warning signals
• Restore function
• Warning function for implausible switching points, sensor fault, overload and overheating
• Manual zero adjustment
• 4-digit code enables locking

 Technical

• Measuring Ranges (relative): 1 to +40 bar
• Ambient Temperature: -20 to +70ºC
• Storage Temperature: -30 to +80ºC
• Medium Temperature: -20 to +70ºC
• Relative Humidity: 0 to 95% non-condensing
• Overall Accuracy: 0.5% of full scale
• Weight: 350g
• Parts In Contact With Medium: Stainless Steel (1.4571)
• Process Connection: Pressure gauge connection G1/2 external thread
• Electrical Connection: 4-prong M12x1 plug connector, Form A (M12x1 connector included)
• Protection Class: II as per EN 61010, IP65
• Power Supply: 18 to 35 Vdc
• EMC: as per EN 61326
• Switching Output: Open collector
• Open collector switching output
• Contact Load: 250 mA (protected against excess current)
• Upper Value (min.): Supply -2 V
• Lower Value (max.): GND + 0.5V
• Hysteresis: SP and RP in the menu free choice
• Warning Output: Pin 2
• Housing and Cover: PA66 GF25

Also Available: Differential Pressure Transmitter (SNDP).

Contact sales for further information.

Related Product(s)

(PSD-30) Wika Electronic Pressure Switch

(DWR) FEMA Pressure Monitor (Tested to PE Directive 97/23 EC)

(DCM) FEMA Pressure Switch (Liquids and Gases)