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FLOWSIC600 Gas flow meters for custody transfer and process applications



Gas flow meters for custody transfer and process applications

The FLOWSIC600 measurement device is an ultrasonic gas flow meter and sets the standard in its market segment for custody transfer of natural gas as well as steam flow measurement. The visually technical design demonstrates that it is geared to the tough industry conditions. The compact design with integrated cable routing means that the measuring system is rugged, insensitive to interference, low-maintenance, and has long-term stability. The FLOWSIC600 features extensive diagnostics options to allow detection of malfunctions even before the measurement is affected. Versions with 2, 4, 4 + 1, or 4 + 4 measuring paths enable a variety of process applications, including custody transfer measurements.

At a glance
  • Highly efficient ultrasonic transducer - up to gas temperatures of 280 °C and pressures up to 450 bar

  • Direct path layout

  • Intelligent self-diagnostics

  • Compact, robust design

  • Integrated log book and data logger

  • Large measuring range 1:120

  • Bidirectional measurement

  • Low power consumption: <1 W


Fields of applications

Custody transfer applications (natural gas, N2, O2, air, ethylene)

Onshore and offshore applications

Steam flow measurement

Underground gas storage facilities (bidirectional measurement possible)

Cryogenic gas applications down to –194 °C

Also for process gases

For gas with high H2S component such as sour gas or biogas

Technical data overview

Measured valuesVolumetric flow a. c., volume a. c., gas velocity, sound velocity
Measurement principleUltrasonic transit time difference measurement
Number of measuring paths2, 4, 4+1, 4+4
Hazardous area



Class I Division 1

Class I Division 2

Measuring rangesMeasuring ranges depend on nominal pipe size
Gas temperature

–40 °C ... +105 °C

On request: –194 °C ... +280 °C

Operating pressure

0 bar (g) ... 250 bar (g)

On request: 450 bar (g)

Nominal pipe size2 ″ ... 48 ″
(DN 50 ... DN 1200)

AGA-Report Nr. 9

API 21.1

OIML D 11:2013

OIML R 137-1:2006

ISO 17089-1

BS 7965

Enclosure ratingIP65 / IP66 / IP67
Modbus✔ , ✔
Type of fieldbus integrationASCII RS-485 (2x)

RTU RS-485 (2x)
Diagnostics functionsIntegrated device diagnostics and enhanced diagnostics via MEPAFLOW600 CBM software

carton or wooden box