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    CS Instruments VA 550 - Thermal mass flow sensor for flow measurement

    Manufacturer:
    The immersion flow meter VA 550 is the ideal flow sensor for installation into existing compressed air resp. gas lines from 3/4“ up to DN 2000
    Part Number: VA 550
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    Flow meter for heavy duty industrial applications

    Reduce your energy costs and increase your sustainability with the VA 550. Monitor your consumption and analyze your leakage flows with just one measuring device. Due to its design, it is also ideal for mobile measurements.Special mechanical features


    Special Features

    • All wetted parts are made of stainless steel, especially for applications with high demands on cleanliness and surface quality
    • Rough industrial applications can be realized due to robust aluminum housing
    • Recommended for flammable gases such as natural gas, hydrogen, biogas, etc. due to ATEX or DVGW approval
    • Measurement of mass flow rate, direct output of standard volume flow rate
    • Highly accurate at small as well as large flows
    • Pressure and temperature compensated by the thermal mass flow principle
    • Quick and easy installation via a standard ½'' ball valve
    • No moving parts, therefore low maintenance
    • Vanishingly low pressure loss due to vanishingly low blockage of the diameter


    Technical details of the VA 550 flow meter

    • 04...20 mA, Pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces like Modbus TCP (Ethernet), PoE and M-Bus available
    • Pressure resistance up to 100 bars
    • Temperature range up to 180°C
    • Protection class IP 67
    • Integrated display for a visualization of the measured values
    • Can be used from DN 20 to DN 2000, larger diameters on request
    • Easy installation under pressure
    • Settings adjustable via the keys of the display
    • Main counter reading can be reset via the display
    • For velocities up to 224 Nm/s
    • Highly accurate with an accuracy of ± 1.5% or ± 1% of m.v. as well as ± 0.3% of f.s.

    Which compressed air flow meter should be used at which point?


    Technical Information
    Measuring range VA 550 up to 50 Nm/s, low-speed version*
    up to 92.7 Nm/s, standard version*
    up to 185 Nm/s, max. version*
    up to 224 Nm/s, high-speed version*
    * Measuring range Nm³/h for diff erent pipe diameters and gases, see table measuring ranges flow
    * All measured values related to DIN 1343 standard conditions 0° and 1013 mbar ex works
    Accuracy:
    Accuracy class
    (o. M. V. = of measured
    value)
    (o. F. S. = of full scale)    		 ± 1.5 % of m.v. ± 0.3 % of f.s.
    on request:
    ± 1.0 % of m.v. ± 0.3 % of f.s.
    Accuracy indications relative to ambient temperature 22 °C ± 2 °C, system pressure 6 bar
    Repeatability 0.25 % of m.v. in case of correct mounting (mounting aid, position, inlet section)
    Measuring principle Thermal mass flow sensor
    Response time t 90 < 3 s
    Operating temperature
    range sensor tube/display unit    		 40…180 °C standard version, sensor tube
    -20…70 °C display unit
    -20…120 °C for ATEX version
    Adjustment possibilities via display, external
    hand-held device PI 500, PC Service Software,
    remote diagnosis    		 Nm³/h, Nm³/min, Nl/min, l/s, ft/min, cfm, kg/h, kg/min, inner diameter, reference conditions ° C/° F, mbar/hPa,
    zero point correction, leak fl ow volume suppression, scaling analogue output 4...20 mA, pulse/alarm, error codes etc
    Outputs Standard: 1 x 4…20 mA analogue output (electrically not isolated), pulse output, RS 485 (Modbus-RTU)
    Optional: 2 x 4...20 mA active, Modbus TCP, HART, Profi bus DP, Profi net, M-Bus
    Burden < 500 ohm
    Additional average value calculation for all parameters freely adjustable from 1 minute up to 1 day, e. g. 1/2 hours average value, average day value
    Protection class IP 67
    Material Die-cast aluminum housing, sensor tube stainless steel 1.4571
    Screw-in thread G 1/2" ISO 228, NPT 1/2", R 1/2", PT 1/2"
    Operating pressure
    VA 550    		 50 bar, in special version 100 bar (with DVGW approval max. 16 bar)
    Power supply 18…36 VDC, 5 W
    Approval ATEX II 2G Ex db IIC T4 Gb, ATEX II 2D Ex tb IIC T90 °C, Db, DVGW

    Flow meter for heavy duty industrial applications

    Reduce your energy costs and increase your sustainability with the VA 550. Monitor your consumption and analyze your leakage flows with just one measuring device. Due to its design, it is also ideal for mobile measurements.Special mechanical features


    Special Features

    • All wetted parts are made of stainless steel, especially for applications with high demands on cleanliness and surface quality
    • Rough industrial applications can be realized due to robust aluminum housing
    • Recommended for flammable gases such as natural gas, hydrogen, biogas, etc. due to ATEX or DVGW approval
    • Measurement of mass flow rate, direct output of standard volume flow rate
    • Highly accurate at small as well as large flows
    • Pressure and temperature compensated by the thermal mass flow principle
    • Quick and easy installation via a standard ½'' ball valve
    • No moving parts, therefore low maintenance
    • Vanishingly low pressure loss due to vanishingly low blockage of the diameter


    Technical details of the VA 550 flow meter

    • 04...20 mA, Pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces like Modbus TCP (Ethernet), PoE and M-Bus available
    • Pressure resistance up to 100 bars
    • Temperature range up to 180°C
    • Protection class IP 67
    • Integrated display for a visualization of the measured values
    • Can be used from DN 20 to DN 2000, larger diameters on request
    • Easy installation under pressure
    • Settings adjustable via the keys of the display
    • Main counter reading can be reset via the display
    • For velocities up to 224 Nm/s
    • Highly accurate with an accuracy of ± 1.5% or ± 1% of m.v. as well as ± 0.3% of f.s.
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