COMBIMASS® gas flow meters use thermal dispersion technology to directly measure the standard volumetric flow rate of the dry gas as per DIN 1343. Thermal mass flow meters are very precise as compared to other available technologies, in particular at low gas velocities and low pressures. Each instrument is individually calibrated in the CAMASS® Calibration Lab, taking into account all process and installation conditions. Pressure, temperature range, gas composition, pipe orientation and sensor installation (e.g. top or side mount) can all be simulated in the lab. This ensure high accuracy over the entire range of the instrument.
If the straight inlet and outlet pipe runs are insufficient, or if very high accuracy is required, the COMBIMASS® flow conditioner can be installed upstream of the flow meter to improve and stabilize the flow pattern. Otherwise, flow deviations due to due to unfavourable pipe runs can reduce measurement accuracy by 20% or more.
Multiple sensor systems can be used for large diameter pipes or rectangular ducts. Multiple local measurements are automatically averaged by a separate electronic module to calculate a more precise flow rate than would be possible with a single sensor. Individual and average measurements can be transmitted to the main PLC using any of the common bus protocols. Binder service specialists can measure flow profiles during start-up to confirm assumed or calculated profiles, and/or determine the optimal insertion depth for each flow sensor.
Thermal gas flow meter for process gases in industrial applications
The field transmitters of the COMBIMASS® eco series are suitable for gas flow measurement and cover a wide range of different applications. The flow transmitters apply thermal dispersion technology in order to measure directly in dry gases the standard volumetric or gas mass flow according to DIN1343, regardless of the operating pressure and temperature of the medium. The instruments can be employed for process temperatures up to 220°C and are available in explosion proof versions. COMBIMASS(R) convert transmits all data to the main PLC using all common types of communication. Inline measuring systems enable accurate measurements even in very small pipelines and at high pressures. A special version is the COMBIMASS® eco hydrogen, which with its FC6 technology enables accurate and reliable measurements even in pure hydrogen.
Flow sensor for measurement of compressed air and technical gases
The field transmitters of the COMBIMASS® series are suitable for flow rate measurement of compressed air and technical gases at medium temperatures up to 130°C. The flow transmitters apply thermal dispersion technology in order to measure in dry gases directly the normal volumentric or gas mass flow, regardless of the operating pressure and temperature of the medium. COMBIMASS(R) convert transmits all data to the main PLC using all common types of communication.
COMBIMASS® flow conditioner
Flow conditioner for short pipe sections and rectangular ducts
To achieve the desired accuracies using COMBIMASS® thermal gas flowmeter, a minimum inlet and outlet straight pipe runs must be considered when installing according to DIN ISO 5167-1 as a result of the actual piping, flow profile irregularities and the necessary calming distances. If no sufficient calming distances are available, the desired measuring accuracy can possibly be achieved with a special calibration of the mass flowmeter by simulating the actual site conditions in our CAMASS® Calibration Lab with the same field operating process conditions under real load conditions and even the same piping layout.
Multipoint measuring system with electronics
A COMBIMASS® multipoint system allows precise measurements of flow rate of pressurized air and technical gases even with short inlet and outlet pipe sections, nominal diameters larger than DN 500 or rectangular ducts. In such situations flow profile distortions may occur, which normally lead to errors in flow metering of gases.
COMBIMASS® AL100 / SS100
Thermal sensor for special applications with correction requirements during operation
The field transmitters COMBIMASS® AL100/ SS100 are suitable for flow rate measurement of compressed air and technical gases at medium temperatures up to 130°C. The flow transmitters apply thermal dispersion technology in order to measure directly in dry gases the normal volumentric or gas mass flow, regardless of the operating pressure and temperature of the medium (DIN1343). Additional signal inputs and outputs can be used for simultaneous correction of signals, if flow profile or gas composition change during operation. COMBIMASS® convert transmits all data to the main PLC using all common types of communication.
Flow meter for measurement of syngas
The COMBIMASS® syngas measuring system is a device combination in intermediate flange design and consists of two sensors: a heat conductivity sensor in the steady flow zone and a thermal sensor in the gas flow. The heat conductivity sensor determines the changing H2 concentration in the gas approximately and corrects the measurement signal of the thermal sensor accordingly.