VA 550/570
12Pages

Precise flow measurement for compressed air and gases

VA 550 Precise flow measurement for compressed air and gases Application range: • Ideal also for the outdoor area • Compressed air measurement and distribution • Leakage measurement of compressed air and gases • Flow measurement of gases like e. g. nitrogen, argon, carbon dioxide, oxygen and so on • Flow measurement in vacuum systems • Flow measurement of explosive gases like natural gas, methane, propane, hydrogen with ATEX approval Applicable in all sectors like e. g.: • Flow measurement of corrosive, acid gases like e. g. biogas with different gas mixtures • Measurement of oxygen and...

VA570 is supplied with an integrated measuring section. The measuring sections are available in flanged version orwith R resp. NPT thread. A special feature is the removable measuring head. So the measuring unit can be removed easily and quickly for calibration or cleaning purposes without having to dismount the measuring section intricately. During this period the measuring section is sealed by a closing cap (accessory). The screwing with centring device ensures that the sensor is positioned accurately in the centre when screwing it into the measuring section furthermore it grants an exact...

VA 550 - immersion sensor Flow sensor for heavy duty industrial applications The immersion sensor VA 550 is the ideal flow sensor for installation into existing compressed air resp. gas lines from 3/4“ up to DN 500. Housing twistable, display twistable by 180° (upside down). Settings adjustable via display, consumption counter resettable All medium-touching parts are made from stainless steel 1,4571 Special measurement technology features: 4 values in the display: Nm3/h, Nm3, Nm/s, °C units freely adjustable Min/max values and daily/hours/minutes average values freely adjustable Special...

- without disconnection ofthe line - without emptying the line Mounting depth =x + y dA= outer diameter x = dA 2 Engraved depth scale for precise installation If there is no suitable measuring site with 1/2“ ball valve there are two simple possibilities to set up a measuring point: A Weld on a 1/2“ screw neck and screw on a 1/2“ ball valve B Mount spot drilling collar including ball valve By means ofthe drilling jig it is possible to drill under pressure through the 1/2“ ball valve into the existing pipeline. The drilling chips are collected in a filter. Then the sensor can be mounted. B...

Configuration of VA 550 via PC Service Software In general all configurations can be done via the integrated display. For sensors without display there is a PC Service Software available. The following adjustments can be carried out directly at the display resp. by means ofthe PC Service Software: • Adjustment of inner diameter of pipe • Selection of gas type • Selection of units: e.g. m3/h, m3/min, l/min, kg/s,... • Reset of counter • Setting of reference conditions (reference temperature/pressure) • Zero point adjustment / leak flow volume suppression • Scaling of 4...20 mA output /...

Operation / configuration also in explosive areas The optical keys integrated in the display also function through the glass pane. Advantage: The sensor VA 550 can also be configured in explosive areas without having to open the housing. In case of conventional keys the housing has to be opened for operation. In an explosive area this is often not possible. Modbus interface ingetrated as a standard Modern building management systems require modern sensors with digital Modbus interface. In case of the flow sensors VA 550 the measured values like: • Volume flow in Nm3/h, Nm3/min and so on • 3...

Technical data VA 550/ 570 Measuring range 0.1...92,7 Nm/s, atandard version* VA 550: 0.1...185 Nm/s, max. version* 0.1...224 Nm/s, high speed version* Accuracy: accuracy class LI* (m.v. of meas. value) (f.s. of full scale) * please see page 11 Accuracy: accuracy class L2* (m.v. of meas. value) (f.s. of full scale) * please see page 11 Accuracy indications Repeatability: Measuring principle: Response time: Operating temperature range probe tube/display unit: Adjustment possibilities via display, external hand-held meter PI 500, PC Service Software, remote diagnosis: Outputs: Burden: 3...

Accuracy class

Screw-in thread Mounting length / shaft length Option display Option additional temperature measurement Option signal output / Bus connection Maximum pressure Operating pressure Surface condition Accuracy class Maximum gas temperature at the sensor tip

Order number VA 550 Description VA 570 flow sensor with integrated 1/2“ measuring section VA 570 flow sensor with integrated 3/4“ measuring section VA 570 flow sensor with integrated 1“ measuring section VA 570 flow sensor with integrated 1 1/4“ measuring section VA 570 flow sensor with integrated 1 1/2“ measuring section VA 570 flow sensor with integrated 2“ measuring section VA 570 flow sensor with integratedDN 15 measuring section with weld neck flange VA 570 flow sensor with integrated DN 20 measuring section with weld neck flange VA 570 flow sensor...