Duct humidity and temperature sensor incl. pressure and differential pressure transmitter PREMASGARD® 814x - Modbus
Maintenance-free microprocessor-controlled pressure transmitter PREMASGARD® 814x - Modbus (series) for exact measurement of relative humidity (0...100 % r.H). and temperature (-35...+80 °C) in ducts as well as for measurement of differential pressure (max. -7000...7000 Pa) in air. With Modbus connection, impact-resistant plastic housing with quick-release screws, optionally with/without display, with plastic sinter filter (replaceable). Incl. mounting flange and connection set ASD-06 (2 m connection hose, two pressure connection nipples, screws).
The pressure sensors are used to measure overpressure, underpressure or differential pressure in clean air and gaseous media. They are used in clean room, medical and filter technology, in ventilation and air-conditioning ducts, in spray booths and canteen kitchens, for filter monitoring and level measurement or for controlling frequency converters.
A long-term stable digital humidity and temperature sensor as well as a pressure sensor with piezoresistive measuring element guarantee exact measuring results. The following parameters are calculated internally from these measured variables and can be called up via the Modbus: Temperature [°C], relative humidity [% r.h.], dew point [°C], absolute humidity [g/m³], mixing ratio [g/kg], enthalpy [kJ/kg] (neglecting atmospheric air pressure), differential pressure [Pa], volume flow [/m3/h], air density [kg/m3].
Innovative Modbus sensors with galvanically isolated RS485 interface, switchable bus terminating resistor, DIP switches for setting bus parameters and bus address in de-energised state, LEDs for telegram status display, two separate push-in terminals and large three-line display (illuminated, individually programmable in 7-segment and dot-matrix range). The sensors are calibrated at the factory; fine adjustment by a specialist is possible depending on the environment.