TECH SPECS-WAFER STYLE LIQUID

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T U R B I N E S , I N C .
PO Box 933
Highway 283 North
Altus, Oklahoma, 73522 USA
Phone: 1-800-809-1387
Fax: 1-580-477-3071
e-mail: karen@turbinesincorporated.com

Webmaster: dezi@primaryflowsignal.com

TECH SPECS-LIQUID WAFER STYLE TURBINE FLOW METER

The following information is characteristic of the technical specifications and other useful information pertaining to the Turbines, Inc. Liquid Wafer Style turbine flow meter product line. All data presented hereunder is correct and accurate at the time of publication, however all specifications are subject to change without prior notice. Please confirm performance and specification parameters at the time of order to verify suitability to your specific application requirements.

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BASIC OPERATING THEORY

Turbine flow meter technology has been available for over four decades. The turbine type flow meter is a novel device that consists of a precisely machined body with defined entrance and exit cross sections within which is suspended specially designed turbine fan (rotor) supported by rotor supports that house bearings into which the shaft on which the rotor rotates is firmly installed. This configuration permits the rotor to spin freely as line fluid flowing axially through the body encounters the rotor.

The body of the turbine meter is machined too accept a hub that allows a magnetic pick-up to be positioned perpendicular to the axis of the flow meter, and directly above the rotor, separated by the wall of the body of the meter.

As the rotor spins, it affects the magnetic field provided by the magnetic pick-up, creating a sinusoidal pulse directly proportional to the local velocity of the line fluid moving through the meter. This pulse is, in turn, interpreted by the flow monitor and expressed as flow rate read out appropriate to the application requirements. The flow rate is inferred by multiplying the local velocity with the local area to which the velocity is referred.

In order to verify the relationship between a specific meter and a particular flow rate range, the turbine meter is laboratory calibrated to establish the specific k-factor of the meter, which is unique to that particular meter and non-transferable. The definition of k-factor is the number of pulses per unit of volume.

Turbine flow meters are especially useful because the accuracy and repeatability of the technology is extremely good and k-factor is typically linear over a 10 to 1 range.

Depending upon line fluid composition and characteristics, various materials of construction are required, and the design of the rotor blade angles must be properly executed. Turbines, Inc. turbine flow meters designed for liquid service must not be used with gas, since the liquid line fluid serves to lubricate the bearings.

The design of the Turbines, Inc. liquid wafer style turbine flow meter is specifically engineered to produce a performance envelope ideally suited for clear non-solids bearing liquids such as water, brine, chemicals and petrochemicals. USE OF THE STANDARD SERIES WM TURBINE FLOW METER FOR NON-LIQUID APPLICATIONS WILL RUIN THE BEARINGS OF THE METER AND VOID THE WARRANTY.

The performance of Wafer style turbine flow meters differ from in-line only in the respect of the installation features. The Wafer style turbine flow meter is compressed between the existing process piping flanges.

PERFORMANCE DATA-Standard Series WM

Accuracy over flow range: +/- 1.0% (except WM0038 which is +/- 2%)
Repeatability over flow range: +/- 0.10%
Operating Temperature: -100 to +300 degrees F.

MATERIALS OF CONSTRUCTION - Standard Series WM

Meter Body: 316 Stainless Steel
Rotor Supports: 316 Stainless Steel
Meter Rotor: 416 Stainless Steel
Rotor Shaft: Tungsten Carbide
Sleeve Bearing: Tungsten Carbide

DESIGN SPECIFICATIONS - Standard Series WM

Number of Hub Holes: 2 hub drillings are available, however unit comes with one hub standard. Second hub hole is provided to allow second mag out put capability.
End Connections: Wafer style mounting with turbine meter being held between existing process piping flanges.
Operating Pressure Rating: Wafer style turbine meters will accommodate pressure ranges to a maximum of 3700 psi, limited to the flange rating of the mating flanges.