Data sheet - VA 500/520
9Pages

Flow sensors for compressed air and gases incl. temperature measurement

What are the advantages of our flow measuring technology? 1) Even under pressure, the flow sensor VA 500 is mounted by means of a standard 1/2“ ball valve. During mounting and dismounting the safety ring avoids an uncontrolled ejection of the probe which may be caused by the operating pressure. For the mounting into different pipe diameters VA 500 is available in the following probe lengths: 120, 160, 220, 300, 400 mm. So the flow sensors are being mounted into existing pipelines with inner diameters of 1/2“ upwards. The exact positioning of the sensor in the middle of the pipe is granted...

VA 500 - Flow sensor for compressed air and gases The new VA 500 for flow measurement of compressed air and gases, optionally with display for flow in m3/h and total flow in m3. Contrary to the previously used bridge circuit the newly developed evaluation electronics records all measured values digitally. This leads to a better accuracy also in case of large measuring spans of 1:1000. Special features: RS 485 interface, Modbus-RTU as a standard Incl. temperature measurement Integrated display for mP/h and m3 Usable from 1/2“ to DN 1000 Easy installation under pressure 4...20 mA analogue...

Flow VA 520 The affordable flow meter for compressed air and gases incl. temperature measurement R 1/4“ (DN 8) With and without flange Intelligent solutions for accurate flow measurement for compressed air and gases The new affordable flow sensors VA 520 work according to the approved calorimetric measuring principle. An additional pressure and temperature compensation is not necessary. Contrary to the previously used bridge circuit the newly developed evaluation electronics records all measured values digitally. This enables very precise and fast measurements. Due to the new evaluation...

In most cases the compressed air is not free from oil, condensate, dirt and particles. In the course of time this leads to a soiling of the flow meters which may cause errors in measurement or even a total breakdown. The flow sensors which have been on the market up to now generally cannot be cleaned and will be exchanged if they are soiled. In case of compressed air meters with integrated measuring section the ..measuring device" cannot be removed. For this reason an expensive bypass line is necessary. The design of VA 520 enables the removal and cleaning of the .measuring device" with...

VA 520 - The advantages at a glance Display twist able by 180°C e.g. in case of reverse flow direction NEW: Modbus-RTU output Display shows 2 values at the same time: - Actual flow in m³/h, l/min,... - Total consumption (counter reading) in m³,l - resp. temperature measurement 4...20 mA output for actual flow Pulse output for total flow (counter reading), galvanically isolated or M-Bus (optionally) Values indicated in the display turnable by 180°C, e.g. in case of overhead installation Measuring device removable: Dismounting of the whole measuring section is not necessary, no bypass...

Flow measuring ranges VA 520 for compressed air (ISO 1217:1000 mbar, 20 °C) Technical data VA 520 Parameters: Units adjustable via keys at display: Meas. principle: m3/h, l/min (1000 mbar, 20°C) in case of compressed air resp. Nm3/h, Nl/min (1013 mbar, 0°C) in case of gases m3/h, m3/min, l/min, l/s, ft/ min, cfm, m/s, kg/h, kg/min Sensor: Meas. medium: Gas types adjustable via external device DS 400, DS 500, PI 500 Meas. range: Accuracy: (m.v.: of meas. value) (f.s.: of full scale) calorimetric measurement Thermal mass flow sensor air, gases air, nitrogen, argon, nitrous oxide, CO2, oxygen...

VA 520 - The advantages at a glance Display twist able by 180°C e.g. in case of reverse flow direction NEW: Modbus-RTU output 4...20 mA output for actual flow Pulse output for total flow (counter reading), galvanically isolated or M-Bus (optionally) Measuring device removable: Dismounting of the whole measuring section is not necessary, no bypass required Display shows 2 values at the same time: - Actual flow in m³/h, l/min,... - Total consumption (counter reading) in m³,l - resp. temperature measurement Values indicated in the display turnable by 180°C, e.g. in case of overhead...

Flow measuring ranges VA 520 for compressed air (ISO 1217:1000 mbar, 20 °C) Technical data VA 520 Parameters: Units adjustable via keys at display: Meas. principle: Description VA 520 flow sensor with integrated DN 15 measuring section with weld neck flange VA 520 flow sensor with integrated DN 20 measuring section with weld neck flange VA 520 flow sensor with integrated DN 25 measuring section with weld neck flange VA 520 flow sensor with integrated DN 32 measuring section with weld neck flange VA 520 flow sensor with...