Rockwin Turbineflowmålere

Rockwin Turbine Flowmeters are precise, reliable and rugged instruments built to International standards. These flowmeters are suitable for a wide variety of industrial, commercial and aerospace applications. Rockwin Turbine Flowmeters are designed to provide high order of performance, accuracy and reliability under severest conditions encountered in oil, gas, petrochemical, aerospace and other industries. Sizes range from 5 to 50 mm threaded Meter Prover, whereas, the gas calibration facility is based on Transfer standards.

PRINCIPLE OF OPERATION

The basic turbine flowmeter consists of a rotor assembly, housing body and pick-up. As fluid passes through the meter it causes the blades of a freely supported rotor, set at a prescribed angle to the direction of flow, to produce a speed of rotation which is directly proportional to the volumetric flow rate. A pick-up assembly, mounted on the outside of the flowmeter body, detects the passage of each blade in front of it and generates a sinusoidal voltage, the frequency of which is proportional to the flow rate.

ASSOCIATED ELECTRONICS

A comprehensive range of electronic signal conditioning and readout instruments is available for use in conjunction with turbine flowmeters. Thes electronic devices include Flow Rate Monitors, Flow Totalisers, various Flow Computers, Switching devices and signal conditioning electronics for local and remote transmission of the output. Readout equipment may be located upto 50 metres from the turbine flowmeter. When a Rockwin Pre-Amplifier is used, the readout unit may be located upto 3000 metres depending upon the resistance of cable used.

GENERAL SPECIFICATIONS

PARAMETER

METERS FOR LIQUIDS

METERS FOR GASES

Flow Range

upto 7000 M³/Hr

Upto 17000 AM³/Hr

Accuracy

Linearity: +/- 0.5% over 10% to 100% Flow Range.
: +/- 0.25% for 50 mm and above
Repeatability: +/- 0.02%
(95% confidence level)

+/- 1% over 10% to 100% Flow Range (inclusive of linearity and repeatability)

Max. Pressure

Threaded Meters: 250 kg/cm²(4000 p.s.i.). Higher rating meters available on request.

Flanged meters: According to flange rating

Threaded Meters:
250 kg/cm² (4000 p.s.i.). Higher rating meters available on request.
Flanged meters: According to flange rating

Pressure Drop

Approx. 0.28 kg/cm² (4 psi) at maximum flow (Specific Gravity 1, Viscosity 1 cst)

Approx. 1 inch w.g. at maximum flow (Air Specific Gravity 1 )

Temperature Range

Tungsten Carbide/Stellite:
-50°C to +250°C
Shielded Ball Bearings: -50°C to +250°C

Shielded Ball bearings:
-50°C to +150°C

Electrical Connections

MS type Amphenol connector supplied with matting connector or conduit box with terminal block connections (conduit box specification dependent on certification requirements).

Field Electronics

A range of Pre-amplifiers, F/I converters and local display electronics are available.