The compact mass flow meters of mini CORI-FLOW Series can be built in an explosion proof housing for use in IECEx and ATEX Zone 1 hazardous areas, ATEX approval II 2 G Ex d e IIB T6 Gb. All electrical instrument connections are available on screw terminals in an electrical housing connected to the Ex d box.
Low Flow Meter and Controller with Ex d Rating
The mini CORI-FLOW Ex d Series are designed for small flow rates, from 100 mg/h up to 30 kg/h, both for liquids and gases. The instruments can be used in systems with pipeline pressures up to 137 bar (1987 psi). The Coriolis flow meter can be equipped with a heater to prevent condensation or solidification inside the instrument. Optionally an additional (external) control unit can be provided to monitor and control the heating temperature. mini CORI-FLOW Ex d models XM12 thru XM14 can be offered for flow rates from:
Instruments of the mini CORI-FLOW Ex d Series mass flow meters and controllers contain a uniquely shaped, single loop sensor tube, forming part of an oscillating system. When a fluid flows through the tube, Coriolis forces cause a variable phase shift, which is detected by sensors and fed into the integrally mounted pc-board. The resulting output signal is strictly proportional to the real mass flow rate. Coriolis mass flow measurement is fast, accurate and inherently bi-directional. The mini CORI-FLOW Ex d features density and temperature of the fluid as secondary outputs.
The mini CORI-FLOW Ex d mass flow meter offers integrated PID control for direct control of valves or pumps, thus constituting compact Coriolis mass flow control loops. Valves or pumps to be used in Zone 1 can also be provided with the meter, but have to be installed outside the Ex d box, to be electrically connected to the screw terminal of the unit.
Full Scale capacities versus pressure rating
| PN 107 bar | PN 138 bar |
|---|---|
| XM12 | 0-200 g/h | |
| XM13 | 0-2,000 g/h | |
| XM14 | 0-30 kg/h |
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