Thermal flow switch PF series

for nitrogenfor airhorizontal

The sensors of the PF2M7 series, to measure the flow rate, exploit the physical principle of thermal conductivity: the fluid in contact with a foil feeds conductive material, in this case gold, removes a small amount of heat. The electric current used to keep the temperature of the plate constant, within the flow rate of the fluid in the pipeline. If properly measured and related to the type of fluid inside the pipeline, the current is able to return the flow rate value. The small size of the instrument allows parallel mounting with several instruments thus making assembly on the panel easier. The PNP type output allows a direct connection with the PLC while the 4...20 mA current analogue output allows a very accurate instantaneous flow rate value to be obtained. The response time for flow measurements can be set from 60 seconds up to 0.01 seconds. PRODUCT FEATURES Detection type - Continuous measurement Measurable media - Carbon Dioxide CO2, Nitrogen N2, Dry air, Argon, (the indications on liquids are indicative and vary with the configuration of the product) Explosion protection - Safe zone Measurement site - Bypass Measurement type - With contact Sensor type - MEMS Integrated temperature sensor - Automatic temperature compensation Bracket included - No Flow control valve - With regulating valve Certificate of calibration - No Direction of connection - Straight Reference conditions - Dry air at 1 bar at a temperature of 25°C Pressure characteristics - At 3,5 bar reference pressure: ± 5% Full scale Response time - Select between 0 - 0.10s (0.01s increments), 0.1 to 1.0s (0.1s increments), 1 to 10s (1s increments), 20s, 30s, 40s, 50s, or 60s