The latest additions are the Type 8007 and Type 8008 flow meters designed for measuring especially large flow rates.
The main issue with measuring the flow of gas is that the accuracy can be reduced by changes in temperature and pressure. By using the calorimetric principle of flow measurement, the accuracy of these new flow meters can be assured since it’s unaffected by changes in temperature and pressure.
Both of the new products use this method of measurement which requires no moving parts, thereby not only increasing the overall reliability, but also providing relatively high accuracy at low flow rates.
Both meters provide a 4-20mA analogue output signal that can be used to control a large range of components, such as process control valves and solenoid valves, either directly or via a PLC.
The Type 8008 is designed for pipe sizes up to 2in and can be used to monitor air supplies, as well as for measuring other gases. The flow meter has an integral display that can be configured to display the measured flow in a variety of units, as well as maintaining a value for the total volume measured. As standard, the maximum flow is 825 Nm3/h, with special flow ranges available on request, while the maximum operating pressure is 16 bar.
The Type 8007 flow meter can be used in pipe diameters ranging from 1/2in up to 12in (DN300) and features a depth scale that ensures that the sensor is correctly positioned within the pipe. Available in three versions: Basic, Extended and Maximum, each calibrated for a velocity range, 85.2 m/s, 170.1 m/s and 206 m/s respectively. The capacity of this product type ranges from 41 Nm3/h for 1/2in pipe up to 44,030 Nm3/h for a Maximum version installed in a 12in pipe, with a maximum operating pressure of 50 bar.
Source: Bürkert Fluid Control Systems
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