used to measure relative humidity or temperature or relative
humidity and temperature in air and other non-aggressive
gases in explosion hazardous arears and in locations with
inflammable dust.
The sensors comprise a sensor part with a sintered filter
mounted on a robust aluminium die-cast housing (transmitter
part), both made of stainless steel.
Connection to a non-intrinsically safe electric circuit for
humidity (F*C3.Ex/8) and for temperature sensors (T*C3.
Ex/8) is achieved with a 1-channel transmitter power
supply unit and for the combined humidity and temperature
sensors(K*C3.Ex/8) either with a 2-channel or with two
1-channel transmitter power supply units with galvanic
isolation between input-/output circuits and power supply.
Product info sheet no. C 4.8
Humidity/-temperature sensors
With „ATEX“ licence for locations with explosive gas atmosphere and for locations with inflammable dust
for use in atmospheric conditions
Technical data
Humidity
Measuring range .............................................. 0...100%rh
Accuracy (MR 5...95%rh at 10...40 °C) ................... ±2%rh
at T40°C ................. 0.1%/K additional
Output ................................................................ 4...20 mA
Temperature
Measuring element (ref. DIN IEC 751) ....... Pt 100 class B
Measuring range ........................................... -20...+80 °C
(special models with special measuring range on demand)
Accuracy at 23°C .................................................... ±0.2 K
other ranges .............................................. ±0.3 K
at T40°C ............ ±0.007 K/K additonal
Output ................................................................ 4...20 mA
Others
Storage temperature ............................... -40...+80°C
Approved operating temperature range .......... -40...+80°C
Maximum surface temperature of housing ................ 95°C
Sensor operating voltage .... 13...24V DC (intrinsically safe)
Maximum admissible input voltage Ui ................... 24V DC
Maximum admissible input amperage Ii ................ 100 mA
Maximum admissible input power Pi .................... 780 mW
Maximum inner capacity Ci ................................ negligible
Maximum inner inductivity Li .............................. negligible
Degree of protection ................................................. IP 66
