Endress+Hauser FLOWSIC500 Ultrasonic Gas Flowmeter
The Endress+Hauser FLOWSIC500 is a compact ultrasonic gas flowmeter designed for accurate and reliable custody transfer measurement of natural gas in gas distribution systems. It uses the ultrasonic transit-time difference measurement principle to determine gas flow without mechanical moving parts, providing a reliable solution for applications where measurement accuracy and long-term operational stability are essential.
FLOWSIC500 is specifically designed for natural gas distribution and custody transfer applications. It measures actual volume, actual volumetric flow and gas velocity, while the integrated volume correction function can additionally provide standard-condition volume and standard-condition flow. This makes the instrument suitable for gas metering stations and other natural gas measurement points where accurate volume calculation is required.
Accurate Natural Gas Custody Transfer Measurement
The FLOWSIC500 is designed to provide dependable measurement performance for commercial natural gas applications. Its accuracy is specified according to the operating flow range, with accuracy class 1 and maximum permissible error limits of ±1% from Qmin to 0.1 Qmax and ±0.5% from 0.1 Qmax to Qmax. After high-pressure flow calibration, accuracy can reach ±0.2% at test pressure. Repeatability is specified at ≤0.1%.
This measurement performance makes FLOWSIC500 suitable for applications where reliable gas volume measurement is important for custody transfer, billing, allocation and natural gas distribution.
Ultrasonic Measurement Without Moving Parts
Unlike traditional mechanical gas meters, FLOWSIC500 uses ultrasonic transit-time difference measurement. The absence of moving mechanical components helps reduce mechanical wear and supports long-term measurement reliability.
The ultrasonic measurement principle also allows the instrument to monitor gas velocity and flow conditions while maintaining a compact design suitable for integration into existing gas measurement stations.
Intelligent Diagnostics for Reliable Operation
FLOWSIC500 incorporates an intelligent diagnostics system for monitoring the condition of the flowmeter and its measurement performance. Diagnostic functions help operators identify potential measurement problems and support efficient maintenance.
The flowmeter can be integrated into existing measurement stations and is designed for reliable operation in gas distribution applications.
Flexible Power and Operation
The FLOWSIC500 can operate in a self-sufficient energy configuration or in failsafe network operation with battery backup. This provides additional flexibility for gas metering installations where reliable measurement availability is required.
Optional Volume Correction
With the integrated volume correction function, FLOWSIC500 can provide measurements at standard conditions in addition to actual-condition volume and volumetric flow. This is particularly useful for natural gas applications where gas volume needs to be converted to defined reference conditions for commercial measurement and reporting.
Typical Applications
The Endress+Hauser FLOWSIC500 can be used for:
Natural gas custody transfer
Natural gas distribution
Gas metering stations
Natural gas billing and allocation
Gas transmission and distribution networks
Commercial gas measurement
Actual and standard-condition gas volume measurement
The instrument is designed for dry, odorized natural gas and is available in nominal pipe sizes from DN50 to DN150 (2" to 6").
Key Features
Ultrasonic transit-time difference measurement
Designed for natural gas custody transfer
Accuracy Class 1
Repeatability ≤0.1%
Optional standard-condition volume correction
Measures actual volume, volumetric flow and gas velocity
Intelligent diagnostics
No mechanical moving parts
Self-sufficient energy or network operation with battery backup
DN50 to DN150 / 2" to 6"
Designed for integration into existing gas measurement stations
