Flowmeter Utilizes Ceramic Ball Bearing System

cox0201.jpg

Cox Flow Measurement's LoFlo series turbine flowmeter is part of the expanded Cox product line. The LoFlo series is a robust axial turbine flowmeter with repeatability of ±0.25% of reading. Constructed of 316 stainless steel with -6 AN (MS) end-fittings, the meter employs a proprietary Si3N4 ceramic ball bearing system, suitable for the demands of water, hydrocarbon and cryogenic fluid applications.

Turbine flowmeters using ceramic bearings can benefit from reduced friction, corrosion resistance, increased durability and a wide temperature range. 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, according to Cox. Less friction translates into reduced wear, and thus less calibration drift.The LoFlo series meter also utilizes a precision, lightweight 17-4 helical rotor and is calibrated on primary standard equipment. The helical blade profile was designed to transfer energy more efficiently, leading to reduced bearing wear and pressure drop.

When paired with the Cox EC80 flow computer, the LoFlo flowmeter's calibration data is linearized to within ±0.1% of reading, allowing for precision flow measurement over the entire usable range of the meter. Repeatability is +/- 0.25%. Available in either integral or remote-mount configurations, the EC80 flow computer provides temperature and pressure compensation with multiple outputs for frequency and analog in engineering units. Additional ancillary products range from simple indicators to signal conditions and panel-mount digital displays.

The compact LoFlo Series flowmeter (2.21-inch 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 is an ideal solution for a multitude of industries. Typical uses include fuel injection production systems, blending of costly chemical additives, onboard fuel consumption, refrigerants and dye injections.

Company Information

    COX Instruments