The thermal mass flow meter has appropriated the domain of low gas flows, where all other flow meter technologies have failed. It has thus conquered many niches in a number of sectors. And even more, it has been able to expand on ever higher gas flows, zoom on the MASS STREAM series of BRONKHORST.
The compact and robust thermal mass flow meters of the MASS-STREAM range are an ideal solution for industrial uses.
Thanks to CTA (Constant Temperature Anemometry) technology, these instruments are less sensitive to moisture or possible pollution in the measured gas thus ensuring robustness and longevity. A 316L stainless steel version allows the use of appliances with corrosive gases such as ammonia in the textile industry. Designed with an IP65 housing, they are waterproof and protected against dust.
The instruments exist in a measurement model alone as well as a regulator, this second version having the particularity of embarking on the same base the measuring element, the control board and the valve thus reducing costs, in particular the programming hours to establish control cycles on PLC. The master/slave function included in the electronic board makes it easy to manage gas mixing ratios such as those in furnace or burner installations.
Unlike the insertion flow meter which requires the probe to be mounted perfectly aligned in the pipe to maintain a good measurement accuracy, MASS-STREAM instruments are easily mounted by quick connections (double rings, plug-ins, etc ...)
The devices can be easily integrated: they include a digital interface with several protocol possibilities (PROFINET, MODBUS, RS232, etc.). Local control is possible with an integrated TFT screen for the management of setpoint / measurement and all digital parameters of the instrument.
A major asset for high flow rates
The MASS-STREAM series covers a wide flow range, from 10 mln/min (G 1/4'') with the D-6310 model to 600 m3n/h (G 2'') with the D-6390 model.
The memorization of up to 8 calibration curves allows the use of the device with different gases on the same process, for example several oxidizers such as natural gas, propane or butane. The other advantage of this feature is to pre-record several flow ranges thus extending the flow range of the instrument.
Many valve coefficients are offered for actuators, which increases the possibilities of flow and pressure range. If the Coriolis mass flow meters on the market generate high pressure drop, on the other hand the thermal mass flow meters in 1'' or 2'' assembly are an excellent alternative on low pressure installations.