Calorimetric flow sensor SL870020

air

sensor flow, Air, Calorimetric, G1/2 inch, 18-36V DC, 4-20mA, Plug-in connection M12 5pin, Plastic PC, With display, Parameterization, RS-485 Flow sensors - Consumption measurement for compressed air The function of the flow sensor is based on the calorimetric principle. The probe is heated up from the inside a few degrees Celsius in relation to the flow medium, in which it protrudes. When the medium flows, the heat generated in the probe is dissipated through the medium. The temperature within the sensor is measured and compared with the likewise measured medium temperature. From the obtained temperature difference the flow state of each medium can be derived. These sensors are applied in areas such as monitoring of cooling systems, ventilation systems, pump dry running by checking the presence of liquid or gas flows. Electrical features Betriebsspannung (DC) 18 - 36V No-load current 140mA Switching voltage 48V Type of analog output 4 mA ... 20 mA Flow measurement yes Short-circuit protection yes Reverse polarity protection yes Mechanical features Medium temperature -30 - 110°C Ambient temperature for évaluation electronics -20 - 80°C Type of process connection G1/2 Inch Degree of protection (IP) of évaluation electronics IP65 Housing material Plastic PC Otherfeatures Reference medium Air Rated switching current 150mA Number of pins 5 Type of interface RS-485 Type of electrical connection Plug-In connection M12 Setting procédure Parameterlzatlon Measuring principle of flow Calorlmetrlc Optional: PoE (Power over Ethernet) yes