Variable-area flow meter GR/GRV

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The Platon GR/GRV flowmeters are moulded plastic tube variable area meters with ball floats. The precision moulded tapered tube has guides to stabilise the float, allowing easy flow reading against the clear 50mm long scale. Units are available calibrated for air or water flows. Typical applications are for operator monitoring of cooling, purging or sample flows. For simple adjustment of flow rates,the GRV option has a built in multi-turn flow control valve. Designed for vertical mounting on a control panel, the flowmeter is supplied with brackets for flush mounting through a cutout approximately 116 x 19mm. Alternatively the meter can be surface mounted. For immediate indication of process alarm conditions, adjustable transparent indicators can be clipped into the flowmeter face, presenting a red limit line at the required flow rate. These accessories can be used to show the limits of normal flow adjustment, or an alarm level. Reliable and rugged process connections are made to stainless steel 1/8 NPT female threads built into a stainless backplate within the meter. The polycarbonate body and flow tube is O-ring sealed to the backplate, and can simply be disassembled for any necessary cleaning or interchange of flow scales.