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| Technical specification |
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Measuring values |
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Actual volumetric flow rate; actual accumulated volume; gas velocity; velocity of sound in gases |
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Measuring principle |
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ultrasonic transit time difference |
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Maximum flow rate |
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400 ... 100 000 m³/h (14 125 ... 3 531 467 ft³/h); depending on nominal width |
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Repeatability |
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< 0.1 % of reading |
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Typical uncertainty |
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1 measuring path: +/- 2.0 %
2 measuring paths: +/- 1.0 %
4 measuring paths: +/- 0.5%, +/-0.2 % after high pressure calibration
(with straight inlet/outlet section 10D/3D or 5D/3D with flow straightener) |
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Number of measuring paths |
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1, 2 or 4 |
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Measured gas pressure |
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0 ... 250 barg (3625 PSI), up to 450 barg ( 6526 PSI) on request |
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Measured gas temperature |
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-30 ... +180 °C (-22 °F ... +356 °F), -194 °C ... +280 °C (-317 °F ... +536 °F) on request |
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Explosion protection |
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Europe (ATEX):
- II 1/2 G EEx de ib [ia] IIA T4 or II 1/2 G EEx de ib [ia] IIC T4
- ultrasonic transducers are intrinsically safe "ia"
USA/Canada (CSA):
- Class I, Division 1, Groups D T4; Class I, Division 2, Groups D T4
- Class I, Division 1, Groups B, C, D T4; Class I, Division 2, Groups A, B, C, D T4
- ultrasonic transducers are intrinsically safe "ia" |
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Measured value output |
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HF pulse (NAMUR or Open Collector); 4 ... 20 mA (active/passive); insulated |
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Interfaces |
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Modbus ASCII (RS485) and Modbus RTU (RS485): configuration, measured values, output and diagnosis or
HART: configuration, measured values, output and diagnosis |
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Installation length |
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3D/5D, 150 ... 2400 mm, depending on nominal size |
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Nominal size |
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DN 50 (2") ... DN1200 (48") |
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Material |
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meter size < or = DN600/24":
steel 1.1120 / ASME A216 WCC; stainless steel 1.4408 / ASME A351 Gr. CF8M
meter size > DN600/24":
steel 1.1120 / ASME A216 WCC, flanges ASTM A105; stainless steel 1.4408 / ASME A351 Gr. CF 8M, flanges 1.4404 / A182 Gr. F316L |
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Remarks |
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Options can be delivered as special versions on request. |
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