Ultrasonic gas flow meter FLOWSIC30 is designed for use in natural gas production applications such as coal seam gas. The dual-path meter comes with a robust carbon steel meter body and full-titanium transducers. The ultrasonic measurement technology has no moving parts and is virtually maintenance free. The rugged design with integrated wires protects the meter from harsh ambient conditions while the large turn-down ratio typically covers all flow rates from a gas production well. FLOWSIC30 is equipped with integrated diagnostics that monitor the meter status and indicate the presence of liquids in the gas stream. With integrated pressure- and temperature measurement and volume conversion according AGA 8 it provides standard flow readings and reduces installation efforts. Power consumption of only 65 mW and the two-wire loop powered concept make integration easy while HART® and Modbus communication provide versatility in data transfer.
At a glanceHigh turndown ratioDesigned for wet gas applicationsIntelligent meter diagnostics incl. wet-gas detectionPossibility for remote monitoring thanks to digital interfacesTwo-wire-transmitter with digital HART® interfaceFull integration of pressure- and temperature measurement, volume conversion and energy flow rate calculationYour benefitsNo plate changes required - one gas flow meter for the complete well lifetimeNo pressure loss - due to ultrasonic measurement principleOptimum availability - almost wearfree operation, no liquid build up in the meter and the possibility of remote monitoringHighly reliable - continuous measurement even under challenging process conditionsLong service life - wet gas capable ultrasonic sensors made of titaniumFull process control and predictable service - due to intelligent meter diagnosticsLow installation efforts - integration of pressure- and temperature measurement, HART®-interface and commissioning assistant
| Measured values | Gas volume s. c., gas volume a. c., volumetric flow s. c., volumetric flow a. c., gas pressure, gas temperature, sound velocity, methane content, energy flow rate |
| Number of measuring paths | 2 |
| Measurement principle | Ultrasonic transit time difference measurement |
| Measuring medium | Coal seam gas, natural gas, methane |
| Measuring ranges | | | 4" - operational volume flow: Qmin ... Qmax: | 20 ... 1,600 m³/h | | 4" - operational volume flow: Qt: | 100 m³/h |
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| Repeatability | ≤ 0.5 % of the measured value |
| Uncertainty of measurement | | | Wet-gas tolerant: Operational volume flow, Qt ... Qmax | ≤ ± 1.5 % | | Wet-gas tolerant: Operational volume flow, Qmin ... Qt | ≤ ± 3 % | | Wet-gas robust: Operational volume flow, Qt ... Qmax | ≤ ± 2 % | | Wet-gas robust: Operational volume flow, Qmin ... Qt | ≤ ± 4 % | | Reference conditions: Dry air at ambient pressure and ambient temperature | | Verified with pipe configurations according to OIML R-137:2012 Annex B (mild) |
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| Diagnostics functions | Integrated device diagnosis Wet gas detection |
| Gas temperature | | | –10 °C ... +80 °C |
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| Operating pressure | | | 0 bar (g) ... 19.6 bar (g) |
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| Nominal pipe size | | | DN100 / 4", schedule STD |
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| Ambient temperature | | | –25 °C ... +60 °C |
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| Storage temperature | –25 °C ... +70 °C |
| Ambient humidity | ≤ 95 %
Relative humidity |
| Ex-approvals | | | IECEx | Ex db eb ia [ia] IIA T4 Gb | | ATEX | II 2G Ex db eb ia [ia] IIA T4 Gb |
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| Enclosure rating | | | IP66 / IP67 |
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| Analog outputs | 1 output:
4 ... 20 mA |
| Modbus | ✔ | | Remark | Option | | Type of fieldbus integration | RTU RS-485 |
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| Dimensions (W x H x D) | See dimensional drawings |
| Weight | 4": 32 kg |
| Material | Meter body: LTCS (ASTM A352 Gr. LCC or ASTM 350 LF2 or equivalent) |
| Electrical connection | | | Voltage | 18 ... 30 V DC | | Via analog loop, 2-conductor concept | | Power consumption | < 65 mW |
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| Process connections | Connection flanges: 4″ ANSI B16.5, Class 150 RF |
