This bench allows the study of industrial flow meters by comparing their measurement technique and their accuracy.
A centrifugal pump draws a non-compressible fluid (water) from a buffer capacity; this fluid is distributed via a membrane regulating valve and a float flowmeter on two pipes on which different flow sensors are mounted: a vane flowmeter, an electromagnetic flowmeter, a vortex flowmeter on the one hand, VENTURI and a standard diaphragm on the other hand (these two pressure-reducing devices are connected to a differential pressure sensor). The circulating fluid in closed circuit is returned to the buffer capacity.
The device is mounted on a stainless steel chassis, equipped with six adjustable feet.
Study of the implantation of the sensors :
It's made of :
A pipe with a selection valve comprising :
VENTURI tube, DN25, in Altuglas with "U" pressure gauge and connection for differential pressure sensor,
One diaphragm, DN25, in Altuglas with "U" manometer and connection for differential pressure sensor,
A differential pressure sensor, output 4 to 20 mA connected to an indicator with extraction of square root for determination of the flow.
A vertical pipe, with an electromagnetic flowmeter for conductive liquids: a voltage is induced in the fluid that is sensed by two measuring electrodes and the transducer determines the fluid velocity, transmitter with 4 to 20 mA output and local display.
An electrical box, waterproof IP 55, including:
A lockable disconnector,
A power-on LED,
A variable speed drive,
A 4-position selector for selecting the regulator input of a flow indicator (choice of measurement),