Pendulum room humidity sensor HYGRASGARD® RPFF-SD-I

Item no. 1201-1172-0000-150

EAN 4251325610115

Product group: WG01

Pendulum room humidity sensor HYGRASGARD® RPFF-SD

The calibratable HYGRASGARD® RPFF - SD pendulum humidity transmitter with plastic sinter filter measures the relative humidity of the air. It converts the measurand into a standard signal of 4...20 mA. Relative humidity (in % r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature.

The measuring transducer is used in non-aggressive, dust-free environments, in refrigeration, air conditioning and cleanroom engineering, hotels, engineering rooms, meeting and conference facilities. It provides precise detection of humidity. A digital long-term stable sensor is used as measuring element for humidity. The sensor is suitable for duct installation, as a pendulum sensor, or for integration in equipment.

Voltage supply

15...36 V DC
depending on working resistance, residual ripple stabilised ± 0.3 V

Power consumption

< 1.1 VA/ 24 V DC

Working resistance

Ra (Ohm) = (Ub -14 V)/ 0.03 A
Ra < 500 Ohm

Measuring range, humidity

0...100 % RH
(output corresponding to 4...20 mA)

Operating range, humidity

0...95 % RH (without dew formation)

Deviation of humidity

typical ± 2 % RH (20…80 % RH ); at + 77 °F, otherwise ± 3 %