Dew point FA 500 - Dew point sensor from -80 to 20 °Ctd FA 500 is the ideal dew point measuring instrument with integrated display and alarm relay for refrigeration, membrane and adsorption dryers. Special features: • Integrated display • Threshold value adjustable via keypad, alarm relay (max. 60 VDC, 0.5 A) • Pressure-tight up to 500 bar (special version) • Extremely stable in the long term • Quick adaption time • 4...20 mA analogue output for dew point • Different refrigeration and adsorption dryer versions • NEW: Modbus-RTU interface • NEW: Higher resolution of sensor signal due to the improved evaluation electronics • NEW: Sensor diagnosis on site with a portable device or CS Service Software Readable via Modbus: - Pressure dew point [°Ctd.] - Temperature [°C] - rel. humidity [% RH] - abs. humidity [g/m³] - Degree of humidity [g/m³] - Moisture content V/V [ppmV/V] - Water vapour particle pressure [hPa] - Atmospheric dew point [°Ctd.atm] The integrated keys enable simple, menu-controlled operation Upper connection: Power supply, 4…20 mA output, Modbus-RTU output Lower connection: Alarm relay Option: Ethernet interface (PoE)

Dew point Easy operation via the keys on the display The integrated display shows the dew point in big figures as well as further humidity parameters on two more display pages. The arrow key can be used to scroll between the display pages. The alarm threshold value for the integrated relay can be freely entered via the keys. In addition to the alarm threshold, the hysteresis can also be freely entered. The 4…20 mA analogue output can be scaled freely or also allocated to one further parameter, e. g. g/m³. After entering the system pressure of the compressed air system and the reference pressure...