Variable-area flow meter

for liquidsin metering tubeglass

Platon Floscan sensors use an infra-red beam across the glass flowtube of a Variable Area (VA) flowmeter. Passage of the float between the sensor arms is detected, and logic within the electronics determines whether the float is above or below the sensor position. Electronics inside the sensor module gives an open collector transistor output, suitable for external logic circuits. Suitable for all gas flows, and liquid flows where the float is visible, the sensor is clipped to the back of the flowmeter frame, typically on a Platon NG/NGX Series (normal 100mm scale) or LG/LGX series (miniature 30mm scale) VA meter. Movement up and down the frame allows the sensor to provide a flow alarm at any point on the tube scale, as required. The sensor can also be supplied on Platon GU or SGUV style flowmeters. The optional mains interface and relay module is used to provide the DC power needed to drive the sensor electronics, plus a SPCO 8 Amp mains relay output. This relay acts as a slave to the transistor output from the sensor module. Each Floscan relay module has two output relays, and can be used to monitor two separate alarm sensors. FEATURES High or Low flow alarm Intelligent: Knows whether float above or below sensor Adjustable over full range of flowtube Suitable for normal (NG/NGX) or miniature (LG/LGX) flowmeters DC output direct to standard logic circuits Optional mains interface relay module ATEX approval (Directive 94/9/EC) EMC approval (Directive 2004/108/EC)