Outdoor Humidity Sensor (OHS)

The sensor device serves to control and monitor relative humidity (humidifying and dehumidifying equipment) and/or temperature (heating and cooling systems) e.g. in ventilation and air conditioning ducts, laboratories, production facilities, climate test chambers, indoor swimming pools, greenhouses, etc.

The universal surface-mounted humidity sensors are used to determine various measured variables of humidity measurement technology and convert them into a standard signal of 0-10 V or 4...20 mA. Many device groups can also display other parameters: relative humidity [% r. h.], absolute humidity [g/ m³], mixing ratio [g/ kg], dew point temperature [°C], enthalpy [kJ/ kg] and ambient temperature [°C].
Duct humidity- and temperature sensors (± 1.8 % ? ± 2.0 %), incl. mounting flange, for mixture ratio, relative ? absolute humidity, dew point, enthalpy and temperature, calibratable, with Modbus connection or W-Modbus (wireless)
Calibratable duct humidity and temperature sensor - Modbus - T3 (± 2.0%) or KFTF - 20 - Modbus - T3 (± 1.8%), with Modbus connection, in an impact-resistant plastic housing with quick-locking screws, optionally with ? without display, with a plastic sinter filter, sintered porous plastic materials offer excellent chemical compatibility, exceptional strength and are resistant to most acids, bases, (exchangeable), incl. mounting flange, to exactly detect the relative humidity (0…100% RH) and the temperature (-35...+80 °C) and to detect various parameters in humidity measurement. International system of units SI (default) can be switched to Imperial (via Modbus). With Modbus device version, the W-Modbus (wireless) replaces the RTU cable; the BMS connection is radio-based using a W-Modbus gateway. The duct sensor is applied in a non-aggressive, dust-free environment and is suitable for installation in ceilings, ducts and devices. It is used in the refrigeration, air conditioning and clean room technology, engineering rooms, hotels and conference facilities. A long-term stable, digital humidity and temperature sensor guarantee exact measurement results. These measurands are used to internally calculate the following parameters that can be retrieved via Modbus: relative humidity, absolute humidity, mixture ratio, dew point, enthalpy (ignoring atmospheric air pressure) and ambient temperature. Innovative Modbus sensor with galvanically isolated RS485 Modbus interface, switchable bus terminating resistor, DIP switch for setting in de-energised state, internal LEDs for telegram status indication, Push terminals and large three-line display (illuminated, individually programmable). The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.
WHY RELATIVE HUMIDITY SENSORS ARE SO IMPORTANT FOR HVAC