Data sheet - VD 500 - EN
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Data sheet - VD 500 - EN - 1

Flow VD 500 - flow sensor for wet compressed air For measuring immediately downstream of the compressor in moist air up to +180 °C FIELD OF APPLICATION: • Measurement immediately downstream of the compressor • Measurement at high temperatures • Measurement of fast processes Particularly suitable for extremely high flow rates Extremely fast response time: 100 ms Flow, total consumption, temperature and pressure Measurement at high temperatures, max. temperature 180 °C Measurement in various gases by selecting the gas type, on request Can be used in pipes from DN 20 to DN 500 Installation via 1/2″ ball valve under pressure RS 485 interface (Modbus-RTU), 4...20 mA, pulse output as standard Typical applications: • Measurement of the capacity of compressors • Compressed air audits • Efficiency measurement of compressed air systems Installation requirements: • After functioning water separator • In horizontal lines (recommended) or in risers TECHNICAL DATA VD 500 Measuring range: Measuring principle: Differential pressure Measuring span: Response time: Accuracy: (m.v.: of meas. value) (f.s.: of full scale) The integrated, precise differential pressure sensor measures the differential pressure/ dynamic pressure at the sensor tip. The pressure depends on the respective gas velocity. The flow is therefore easy to determine by means of the pipe diameter. The additional measurement of temperature and absolute pressure and calculation of the relevant density means that measuring can be carried out for various gases, a wide variety of temperatures and pressures. Measured medium: Operating pressure: Ambient temperature: Screw-in thread: Power supply: Signal outputs: As standard: RS 485 (Modbus-RTU), 4…20 mA, pulse Optional: Eth

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Data sheet - VD 500 - EN - 2

Example order code VD 500: 0690 5001_A1_B1_C1_D1_E1_F1_G1_K1 Measuring range A1 A2 Simple installation and removal under pressure with integrated display Recommended installation position M-Bus, 1 x 4…20 mA analogue output (not electrically isolated), RS 485 (Modbus-RTU) Reference standard VD 500 flow sensor for wet compressed air 20 °C, 1000 mbar 0 °C, 1013.25 mbar 15 °C, 981 mbar 15 °C, 1013.25 mbar Accessories: ISO calibration certificate Compressed air Additional gas on request High-pressure protection Signal outputs / bus connection option 1x 4…20 mA analogue output (electrically not...

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