Dew Point Sensor FA 510/515

Residual Moisture Measurement in explosive areas

 FA 515 EX – Dew point sensor for refrigeration dryers

Dew point sensor from -20 to 50°c td for the typical use in refrigeration dryers – FA510/515

In addition to the previously common 4…20 mA analogue output the new generation of dew point sensors have a digital RS 485 interface (Modbus-RTU). All values like e. g. dew point, temperature, absolute humidity … which are measured and calculated by the dew point sensor can be retrieved via the Modbus protocol.

Compared with the previous models the sensorics and evaluation electronics have been improved once again, especially the integrated temperature compensation. This means: Increased accuracy at different ambient temperatures and an improved resolution of the sensor signal. Like the previous models the new dew point sensors have an excellent long-term stability and show reliable measured values. The sensor element is insensitive against condensation and due to the serial sintered cap made of stainless steel it is protected against direct contact with soiled particles.

II 2G Ex ib IIC T4 Gb Zone 1, gas, intrinsically safe, Temp. 135°C
II 2D Ex ib IIIC T80°C Db Zone 21, dust, intrinsically safe, Temp. 80°C
FA 515 Ex may only be used in connection with approved Ex-rated power supplies
or safety barriers or galvanic separating elements with max.:
U2 = 28 V max.
I2 = 93 mA max.
P2 = 0,65 W max.