Monitoring particulate solid flow in a conduit using a...

Details Monitoring particulate solid flow in a conduit using a... Monitoring particulate solid flow in a conduit using a...

G - Physics

01

P

340/143, 73/164,

G01P 5/10 (2006.01) G01P 5/12 (2006.01)

Patent

CA 1077738

ABSTRACT Apparatus for monitoring the flow of particulate solids in a conduit in which the 'noise' voltage in the electrical output from a thermistor in thermal contact with the stream of particulate solids, are utilised to operate signalling means. Longer term variations in the electrical output from the thermistor due to process variations are filtered out. The apparatus may be adapted to detect a fall in the solids flow rate below a particular limiting value by the use of a comparator stage or may be adapted to give an instantaneous indication of flow rate by utilising a direct current output to drive for example a moving coil meter.

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