Turbine Flowmeter for Cryogenic Fluid Applications


Cox Flow Measurement has introduced the Cox Lo-Flo Series turbine flowmeter for demanding water, hydrocarbon and cryogenic fluid applications. This rugged, precision flowmeter is part of the expanded Cox product line, designed to serve the needs of the industrial market. The Lo-Flo Series is a robust axial turbine flowmeter with repeatability of +/-0.25 per cent of reading. Constructed of 316 stainless steel with -6 AN (MS) end fittings, the meter employs a proprietary Si3N4 ceramic ball-bearing system.

Turbine flowmeters using ceramic bearings offer reduced friction, corrosion resistance, increased durability and a wide temperature range, contributing to longer life. Ceramic ball bearings have considerably less friction than journal or sleeve bearings, which, in turn, extends the usable range of the flowmeter and improves the repeatability of the flow measurement. The Lo-Flo Series meter also utilises a precision, lightweight 17-4 helical rotor and is calibrated on primary standard equipment.

The helical blade profile transfers energy more efficiently, reducing bearing wear, pressure drop and their associated cost. When paired with the Cox EC80 Flow Computer, the Lo-Flo flowmeter's calibration data is linearised to within +/-0.1 per cent of reading, allowing for precision flow measurement over the entire usable range of the meter. Repeatability is +/- 0.25 per cent. Available in either integral or remote-mount configurations, the EC80 flow computer provides temperature and pressure compensation with multiple outputs for frequency and analogue in engineering units.

Additional ancillary products range from simple indicators to signal conditions and panel-mount digital displays. The compact Lo-Flo Series flowmeter (2.21in face dimension) is not position-sensitive and can be mounted in any piping orientation. Designed to measure flows as low as 0.006 GPM (0.024 LPM), the meter suited for a range of industries. Typical uses include fuel-injection production systems, blending of costly chemical additives, onboard fuel consumption, refrigerants and dye injections.

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