Oxygen Flow Meter With Regulator Sharp Japan
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A flow meter (or flow sensor) is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a liquid or a gas. When choosing flowmeters, one should consider such intangible factors as familiarity of plant personnel, their experience with calibration and maintenance, spare parts availability, and mean time between failure history, etc., at the particular plant site. It is also recommended that the cost of the installation be computed only after taking these steps.One of the most common flow measurement mistakes is the reversal of this sequence: instead of selecting a sensor which will perform properly, an attempt is made to justify the use of a device because it is less expensive. Those 'inexpensive' purchases can be the most costly installations. This page will help you better understand flow meters, but you can also speak to our application engineers at anytime if you have any special flow measurement challenges.
First Steps to Choose the Right Flow MeterThe first step in flow sensor selection is to determine if the flowrate information should be continuous or totalized, and whether this information is needed locally or remotely. If remotely, should the transmission be analog, digital, or shared? And, if shared, what is the required (minimum) data-update frequency? Once these questions are answered, an evaluation of the properties and flow characteristics of the process fluid, and of the piping that will accommodate the flowmeter, should take place.
In order to approach this task in a systematic manner, forms have been developed, requiring that the following types of data be filled in for each application: Download the Flowmeter Evaluation Form.Fluid and flow characteristicsThe fluid and its given and its pressure, temperature, allowable pressure drop, density (or specific gravity), conductivity, viscosity (Newtonian or not?) and vapor pressure at maximum operating temperature are listed, together with an indication of how these properties might vary or interact. In addition, all safety or toxicity information should be provided, together with detailed data on the fluid's composition, presence of bubbles, solids (abrasive or soft, size of particles, fibers), tendency to coat, and light transmission qualities (opaque, translucent or transparent?).Pressure & Temperature RangesExpected minimum and maximum pressure and temperature values should be given in addition to the normal operating values when selecting flowmeters. Spring and Piston Flow MetersPiston-type flowmeters use an annular orifice formed by a piston and a tapered cone.
The piston is held in place at the base of the cone (in the 'no flow position') by a calibrated spring. Scales are based on specific gravities of 0.84 for oil meters, and 1.0 for water meters. Their simplicity of design and the ease with which they can be equipped to transmit electrical signals has made them an economical alternative to rotameters for flowrate indication and control. Turbine Flow MetersThe turbine meter can have an accuracy of 0.5% of the reading. It is a very accurate meter and can be used for clean liquids and viscous liquids up to 100 centistokes. A minimum of 10 pipe diameters of straight pipe on the inlet is required.
The most common outputs are a sine wave or squarewave frequency but signal conditioners can be mounted on top for analog outputs and explosion proof classifications. The meters consists of a multi-bladed rotor mounted at right angles to the flow and suspended in the fluid stream on a free-running bearing. Paddlewheel SensorsOne of the most popular cost effective flowmeters for water or water like fluids. Many are offered with flow fittings or insertions styles. These meters like the turbine meter require a minimum of 10 pipe diameters of straight pipe on the inlet and 5 on the outlet. Chemical compatibility should be verified when not using water.
Oxygen Flow Meter With Regulator Sharp Japan Parts
Sine wave and Squarewave pulse outputs are typical but transmitters are available for integral or panel mounting. The rotor of the paddlewheel sensor is perpendicular to the flow and contact only a limited cross section of the flow.
WT Farley offers an extensive selection of oxygen flowmeters including standard Thorpe tube style and flows ranging from 200 CCs to 70 LPM. We also carry click style versions in 15, 25, and 40 LPM models as well as our Select flowmeter in 0-15 LPM range.