Turbine WheelFlow Meter / Monitor

FLOMEC

For Low Viscosity Liquids

Turbine Wheel Flow Meter / Monitor

The TP turbine wheel flow meter is highly accurate, reliable & used to measure the flow of clean low viscosity fluids & utilizes a proven flow meter technology.

The turbines design is based on a freely suspended turbine rotor which is rotated by the flow of fluid through the meter body

DescriptionFlomec

Turbine Wheel Flow Meter / Monitor

OperationFlomec

Circlip

Bearing supportsRotor shaft

& rotor

Fig. 1

Principal of operation

The TP Turbine Wheel flow meter consists of a helically shaped turbine rotor supported in two tungsten carbide bearings, the rotor being solid ferritic stainless steel of a grade compatible with the metered liquid, is all contained within a housing of non-magnetic stainless steel. (fig.1).

OperationFlomec

A pick off coil having a permanent magnet core is mounted in the housing adjacent to the rotor blade tips such that a magnetic circuit is set up via the rotor blades (fig.2).

Rotation of the rotor varies the reluctance of this Pick off coil magnetic circuit and the flux changes induce a small voltage in the coil, the frequency of which is directly proportional to the rotor speed andtherefore proportional to the volumetric flow rate.

Fig 2

Principal of OperationPick - Off coil

Rotor Blades

Stainless steel body Tungsten carbide shaft & bearings Frequency output

Pressures to 250 bar

Pipe sizes 1/2” to 6” (15-150mm)

+/- 0.5% linearity ( 10:1 turndown )

Minimal pressure loss

Simple to install

Temperature 120 deg C standard

European CE compliant.

Flanged or Screwed

Turbine Wheel FeaturesFlomec

High temperature to 2400 C

+/- 0.15% linearity.

2 pick off coils – 90 deg. offset

Integral or remote high speed

preset batch controller

Integral or remote self powered flow

rate totaliser with scaled pulse, 4-20 mA

and flow alarm outputs.

Optional Bi-directional discriminator

output.

Turbine Wheel OptionsFlomec

RATE

TOTAL

ACCUM

TOTAL ^RESET

>PROGRAM

ENTER

galRUN ACCUM. TOTAL STOP BAT LOW HIGH

Frequency output - 2 wire reluctance pick off coil. ( 40mV P/P at minimum flow rate )

Suitable for direct input to a wide range of ancillary instruments.

Polarity insensitive - 20 meters transmission distance standard.

IP66 / 67 protection class.

Turbine Wheel OutputsFlomec

Turbine Wheel OutputsFlomec

coil output

with

junction box

screen earthed

at junction box

& connect to -0V

at receiving instrument

coil output

with MS connector

( A & B )

screenuse twisted

pair

twisted pairPick-off coilscreen

Receiving instrument

Because of the low strength of the standard coil mV output it is important to protect the transmitted signal from any form of electrical interference such as AC line frequencies. A twin core ( twisted pair ) screened multi-strand signal cable should be used for connection to the pick-off coil, recommended cable size being 16/0.2 x 0.5mm² ( 16/0.0078 ). The screen needs to be connected at -0V at receiving instrument

Electrical Connections

Kobold Turbine Wheel OutputsFlomec

coil output

with MS connector

( A & B )

screenuse twisted

pair

twisted pairPick-off coil

screen

RATE

TOTAL

ACCUM

TOTAL ^RESET

>PROGRAM

ENTER

galRUN ACCUM. TOTAL STOP BAT LOW HIGH Cable runs for non amplified outputs

should be limited to 20 metres (65 feet) maximum and should be kept well away from high energy power supplies and electricals such as motor speed controllers, transformers and solenoids. Preferably run the cable in a separate conduit to any other wiring.

Longer cable runs would require an amplifier at the flow meter

20 meters max.

Electrical Connections

Turbine Wheel OutputsFlomec

Amplified current pulse output with MS connector.

Receiving instrument

+ 9~24Vdc

( - )

ShieldPreamplifier coil ( optional )

An amplified output can be provided by fitting a pre-amplified coil. The pre-amplifier coil amplifies the low level signal from the integral magnetic pick-off providing a current pulsed output suitable for transmission over long distances or through noisy electrical environments. The output is a current pulse in the order ..of 4mA (off) and 20mA (on)

InstallationFlomec

Meter orientationThe meter may be installed in horizontal or vertical pipes, with vertical pipes it is preferred to have the flow passing upward so that any entrained air bubbles will pass quickly. Ensure that the arrow on the meter body is in line with the direction of flow.

min. 10 pipe diameters

min. 5 pipe diameters

Fig. 2

Flow conditioning

All turbine flow meters should be installed with a minimum of ten diameters of straight pipe up-stream and five diameters down-stream (fig. 2), except where the flow meter is installed directly after a valve or centrifugal pump when the minimum straight up-stream length should be increased to 20 diameters.

InstallationFlomec

Bends & elbows up-stream of the flow meter should have a minimum inside radius of twice the diameter of the pipe. Ensure flange gaskets are bore size matched with meter.

Flow Conditioning

22~30º

Fig 3Reducers where necessary should be of the concentric type with an included angle of 22~30 degrees (fig. 3)

Inlet pipe bore should be matched as closely as possible to that of the meter, but where it is not possible to select the exact inside diameter, a smaller inlet diameter should be used in order to avoid a sharp step at the meter inlet which would cause liquid swirl effecting metering accuracy.

Fluid Flow in PipesFlomec

Rotor leading edge (angled)

FLOW DIRECTION

Bearing supports

Rotor trailing edge (squared)

Viscosity effects

viscosity [cSt ] ) x normal min. flow rate( 0.7

The effects of increasing viscosity reduce the linear flow range, the lower end flow rate is to be raised as the viscosity increases with a maximum viscosity of 10cSt. To calculate the low end accurate flow rate limit use: 0.7 x the square root of the metered liquid viscosity in cSt x normal minimum flow rate. Eg. If normal flow range is 10~100 l/min then for viscosity of 5 cSt minimum accurate flow rate would be 15.65 l/min.

Applications

Typical industry applications include:

(Liquids with viscosity below 10 cSt.)

Chemicals & allied Products.

Pharmaceuticals.

Fuel consumption

Fuel additives

Deionised water

Hydraulics

Coolants

Batching & blending

Liquid Fertilizer

ApplicationsFlomec

TP SeriesModel Prefix

316 stainless steel body & rotor shaft

Process connection

Body Material

15- 150 mm (1/2" - 6")Suit Pipe Sizes

Rotor Material 316 stainless steel

Viscosity Limit

Screwed or flanged

10 mm2/s. ( 10cSt )

Flow Range 0.11 – 550 M3/hr.

Linearity @ 1cP Linearity typically +0.5%, of Reading +1%,

Threaded to 250 bar, flanged according to flange specificationMaximum Pressure

SpecificationsFlomec

Repeatability +0.2%, under steady flow conditions

Pressure Drop Approx. 0.28 bar at maximum flow ( SG=1, Viscosity=1 mm2/s )

2 Wire reluctance type pick-off coil (40mV P/P at minimum flow rate )Polarity insensitive 20 metres maximum transmission distance

Outputs (standard)

Protection Class IP66 / 67

Temperature Minus 50 to plus 120 deg .C optional 240 deg. C

2 wire 4mA (off) and 20mA (on)current pulse (12…24Vdc ) 3000 metres maximum transmission distance

Preamplifier

Recommended Filters Sizes up to 50mm ( 300 microns or 60 meshSizes 80mm and above ( 500 microns or 100 mesh )

TP SeriesModel Prefix

SpecificationsFlomec

Turbine Wheel flow meter TP Series

TP-12

TP-13

Stainless Steel / Carbon Steel

Stainless Steel / Stainless Steel

Body Material 316 stainless steel.

TP-13 Screwed

05 = 0.11 – 1.1 m3/h

10 = 0.22 - 2.2 m3/h15 = 0.40 - 4.0 m3/h20 = 0. 80 - 8.0 m3/h

Ordering InformationFlomec

G4 = ½” male

G5 = ¾” male

25 = 1.60 - 16.0 m3/h G6 = 1” male

30 = 3.40 - 34.0 m3/h G8 = 1 1/2” male

35 = 6.80 – 68.0 m3/h G9 = 2” male

XX = Special Option XX = Special Option

Range Connection

Turbine Wheel flow meter TP Series

TP-12 / 13 Flanged

05 = 0.11 – 1.1 m3/h

10 = 0.22 - 2.2 m3/h15 = 0.40 - 4.0 m3/h20 = 0. 80 - 8.0 m3/h

Ordering InformationFlomec

F4 = DN15, PN16

F5 = DN20, PN16

25 = 1.60 - 16.0 m3/h F6 = DN25, PN16

30 = 3.40 - 34.0 m3/h F8 = DN40, PN16

35 = 6.80 – 68.0 m3/h F9 = DN50, PN16

40 = 13.5 – 135 m3/h FB = DN80, PN16

Range Connection

45 = 27.0 – 270 m3/h

50 = 55.0 – 550 m3/h

FC = DN100, PN16

FB = DN150, PN16

XX = Special Option XX = Special Option

Insertion Paddle Wheel TP Series

Pick-off Style / Type M1 = MS ( military style ) connector for 120 deg C max.M2 = MS ( military style ) connector for 240 deg C max.M4 = MS ( military style ) connector pre-amplified for 65 deg C max.F1 = Flying leads ( compact meter mount, see electronics ) for 120 deg C max.XX = Special OptionF6 = NPN OC + 1.5V – integral electronic ZOD on stem kit

Ordering InformationFlomec

Order Example: DOT-13 15 N5 F1 B1 0

-00 = Frequency output only FBT11 = Electronic TotalizerFRT12 = Electronic Rate / TotalizerFRT20 = Electronic Rate / Totalizer FEB1 = Electronic Batch Controller XX = Special option ( specified in clear text )

Electronics

Special options None = Without optionsY = Special option (specified in clear text )B = Linearity 0.15% ( instead of 0.5% )2 = 2 x Pick off coils