Insertion Paddle WheelFlow Meter / Monitor

FLOMEC

For Low Viscosity Liquids

Insertion Paddle Wheel Flow Meter / Monitor

Cost effective.

Simple means of measuring the flow.

Wide range of low viscosity liquids.

IntroductionFLOMEC

Operating principle

Flow passes through a pipe causing the rotor to spin. Magnets installed in the rotor pass by pulse sensors within the transducer body & inturn this produces frequency outputs proportional to flow rate.

Insertion Paddle Wheel Flow Meter / Monitor

Durable PVDF or PEEK rotor. Graphite - PTFE impregnated peek

bearing. Precision ground stainless rotor shaft. 316 stainless steel body.

Robust FeaturesFlomec

All stainless steel construction

Dual independent pulse outputs

Direct input to PLC and Computer

High pressure submersible design

Pipe sizes 1.5” to 100” (40-2500mm)

Electrical interference immunity

Minimal pressure loss

Simple to install

Low installed cost

European CE compliant.

Paddle Wheel FeaturesFlomec

High temperature to 4000F (2000C)

Reed switch option for hazardous

area operation (intrinsically safe)

Integral or remote high speed

preset batch controller

Optional Bi-directional discriminator

output

Non magnetic rotor option for

liquids containing ferrous

suspensions.

Paddle Wheel OptionsFlomec

The metering head of the Paddle Wheel is shaped to encourage a conditioned flow profile at the aerofoil shaped rotor.

The combination of these unique features extends the linear measuring range to cover flow velocities from 1.0 - 33 ft/sec (0.3 - 10 metres/sec), without creating flow cavitation.

Paddle Wheel Flow Conditioning at Metering Head

Innovative Design Flomec

Standard, two independent pulse outputs

Suitable for direct input to a wide range of ancillary instruments, Z3 Totalizer, PLC's and computers.

Both pulse outputs are rotor magnet activated.

High level of immunity to electrical interference experienced with most other transducers of this kind.

Paddle Wheel OutputsFlomec

High Level Voltage Pulse - A self generating pulse output requiring no power source, produces a strong 1.5 volt output spike of approx. 10 micro seconds duration with no dependence on rotor speed.

Square Wave Output - An open collector pulse output produced by a solid state Hall Effect device. This three wire device requires 5-24VDC excitation voltage and produces a high resolution NPN square wave conditioned output.

OutputsFlomec

General Arrangement Standard Installation

InstallationFlomec

Z3 Rate Totaliser

D

LOCK

ALIGNMENT SLOT TO

PARRALLEL PIPE

Examples of insertion depth D :

For 40mm pipe ID ( D= 5.0 mm )For 50mm pipe ID ( D= 6.25 mm )For 100mm pipe ID ( D= 12.5 mm )For 400mm pipe ID ( D= 50.0 mm )

Hot Tap Installation

InstallationFlomec

DOR Paddle Wheel

2" ball or gate

isolation valve.

12 o’clock 2 o’clock

Other positions around the pipe are acceptable

10 pipe dia. minimum

25 pipe dia. prefered

5 pipe dia. min.

10 pipe dia. prefered

FLOW

Major obstructions such as pumps, valves, reducers or

strainers to be kept well outside the straight run pipe sections

Installation Straight Piping Requirements

InstallationFlomec

Orientation

10 o’clock

Mount on either the 2, 10 or 12 o’clock positions of the pipe. If there is any likelihood of air entrainment in a horizontal pipe do not locate the flow transducer in the 12 o’clock position.

Factors which affect the flow of a fluid in a pipe include:-- Velocity of the the fluid

(mean velocity)- Viscosity of the fluid- Density of the fluid- Diameter of the pipe- Pipe friction where the fluid

is in contact with the pipe. Fig. 1 Ideal fluid velocity profile

If we ignore the effects of viscosity and the pipe friction, a fluid wouldtravel through a pipe in a uniform velocity across the diameter of thepipe. The 'velocity profile' would appear as in Fig 1.

Fluid Flow in PipesFlomec

The most important of the factors effecting fluid flow in pipes can be pulled together in one dimensionless quantity to express the characteristics of flow. This is known as the Reynolds Number.

However, this is very much an 'ideal' case and, in practice, viscosity effects the flow rate of the fluid and works together with the pipe friction to further decrease the flow rate of the fluid near the pipe wall. This can be represented in Fig 2.

Fig. 2 Real fluid velocity profile

Fluid Flow in PipesFlomec

At very low velocities, the dynamic force will be low and, therefore, the Reynolds Number will be small. Similarly, a high viscosity fluid will result in low Reynolds Number. This will result in viscous forces holding back the fluid flow at the pipe walls with the highest fluid velocity at the centre of the pipe. This is similar to Fig 2. Except that the velocity profile is a parabola (see Fig 3.). It is known as laminar flow and normally occurs at Reynolds Numbers below 2000.

Fig. 3 Laminar Flow

Fluid Flow in Pipes

Flomec

When Reynolds Numbers are above 2000 i.e. high velocities and/or low viscosities, the flow breaks up and Turbulent flow occurs with a much flatter velocity profile (see Fig. 4).

Fig. 4 Turbulent flow velocity profile

In the process world, unless very viscous fluids are being piped, turbulent flow is the norm. This is certainly the case for steam where Reynolds numbers well in excess of 2000 are encountered.

Fluid Flow in Pipes

Flomec

Installation GuidelinesFlomec

Wide Application

Typical industry applications include:

HVAC - Hot and chilled water, Fire systems

and Thermal energy monitoring.

Municipal - Water distribution, Water management

and Water treatment.

Irrigation - Water management.

Water treatment - Chlorination, Desalination and

mechanical filtration plants, Chemical injection systems.

Refineries - Primary flow additive injection, Fire and cooling systems.

Power Generation - Boiler feed water, Steam condensate, Process water

and water balancing.

Chemical - Process and cooling tower water, Chemical and water batching.

Others - Cement Mfg, Diesel fuel transferring, Flow testing, Fire truck

and Hydrant flow monitoring, Food processing, Pulp/paper, Mining.

ApplicationsFlomec

DP-490Model Prefix

316L stainless steel body & rotor shaft, FPM O-rings

Process Connections

Body & O-ring Material

DP-525

40 - 900 mm (11/2" - 36") 50 - 2500 mm (2" - 100")Suit Pipe Sizes

Rotor Material PVDF ( 100 deg C ) or PEEK ( 200 deg C )

Velocity Range

R11/2" Male or 11/2" NPT male R2" Male or 2" NPT male

0.3 - 10 metres / sec. (1.0 - 33 ft / sec.)

Flow Range 0.25 - 6300 litres / sec. (4 - 99600 USGPM)

Linearity & Repeatability

Linearity typically +1.5%, Repeatability +1%, with well established flow profile

80 bar (1200 PSI)Maximum Pressure

SpecificationsFlomec

Voltage Pulse self generated 1.5V x 10s (2 wire) 200 - 240hz max. Open Collector NPN 5 - 24VDC square wave (3 wire) 200 - 240hz max.

Temperature Ranges

Outputs (standard)transmission to 1000m(3300 ft) max.

Conduit Entry

Standard -40C0 to 1000 C (-400 to 2120 F) plus option to 2000 C (4000 F)

3/8" NPT or PG9 conduit thread (M16 x 1.5 on terminal box option)

Shipping Weights 1.3 kg (3lbs) 1.5 kg (3.3lbs)

Reed Switch (2 wire) 66 - 80hz max. [can be used as I.S. with barrier] Non magnetic rotor + Hall Effect output (for liquids with ferrous impurities)

High temperature voltage pulse output to 2000 C (4000 F) Quadrature output (dual Hall Effect output with 900 phase shift).

Outputs (optional)

Cable 3 metres (10ft) screened 5 core as standard, longer lengths are optional.

Mounting Requirements

BSP / NPT service saddle

DP-490Model Prefix DP-525

SpecificationsFlomec

Insertion Paddle Wheel DP-490 / DP-525

DP-490

DP-525

40-900mm pipes (1.5" - 36") - 1 1/2" BSP/NPT process connections.

50-2500mm pipes (2" - 100") hot-tap version - 2" BSP/NPT process connections.

Body Material 316 stainless steel.

Rotor Material 2 =PVDF / St. St. ( max 100 deg C )4 =Peek / St. St. ( max 200 deg C )X =Special ( on request )

Sealing Material F = FPM ( standard )N = NBRP = PTFE ( encapsulated FPM )E = EPR ( for Ketones only )

MechanicalConnection

DP-490R8 = R1 ½” maleR9 = R2 maleN8 = 1 ½” NPT maleN9 = 1000C (1850F – standard )DP-520R9 = BSPT maleN9 = 2” NPT male

Ordering InformationFlomec

Insertion Paddle Wheel DP-490 / DP-525

Output / ElectricalConnections

F1 = NPN OC + 1.5V – pulse + 3 m cable ( standard ) F2 = NPN OC + 1.5V – pulse + 10 m cableF3 = NPN OC + 1.5V – pulse + 20 m cableF4 = NPN OC + 1.5V – pulse + 50 m cableF5 = NPN OC + 1.5V – pulse + terminal box on stem kitF6 = NPN OC + 1.5V – integral electronic ZOD on stem kitN5*= NPN OC + terminal box on stem kit + high temp. sensorN6*= NPN OC + integral electronic ZOD on stem kit + high temp. sensorR1 = Reed switch + 3 m cableR2 = Reed switch + 10 m cableR3 = Reed switch + 20 m cableR4 = Reed switch + 50 m cableR5 = Reed switch + terminal box on stem kitQ1 = 2 x NPN OC + 3 m cableQ2 = 2 x NPN OC + 10 m cableQ3 = 2 x NPN OC + 20 m cableQ4 = 2 x NPN OC + 50 m cableQ5 = 2 x NPN OC + terminal box on stem kitE1 = Non magnetic rotor for ferrous media, NPN, 3 m cableE2 = Non magnetic rotor for ferrous media, NPN, 10m cableE3 = Non magnetic rotor for ferrous media, NPN, 20m cableE4 = Non magnetic rotor for ferrous media, NPN, 50m cableT5*= Non magnetic rotor for ferrous media, ind. Coil, terminal box on stem kitH5*= High temp. inductictive coil, terminal box on stem kit, + 200 deg.CXX = Special option ( specified in clear text, consult factory )

Ordering InformationFlomec

*Denotes only possible with PEEK rotor

Order Example: DOR-52 4 F R9 H5 00

Paddle Wheel Meter DP-490 / DP-525 - cont’d

Electronics-00 = Frequency output only 3 metres cable - standard

Only for output F6 & N6Z1 = Electronic ZOD-Z1Z3 = Electronic ZOD-Z3Z5 = Electronic ZOD-Z5B1 = Electronic ZOD-B1XX = Special option ( specified in clear text )

Special options None = Without optionsY = Special option (specified in clear text )

Ordering InformationFlomec

Paddle Wheel Rate / Totalisation Options

The FRT12 Series of Flow Rate Totalisers are field mount or remote instruments for accurate flow rate indication and totalisation of flow.

The self powered FRT12 interfaces direct to the Paddle Wheel without the need for external power. Alternatively it can be loop powered via an optional 4-20mA output.

The instrument is housed in a robust plastic enclosure that is completely watertight to IP67 (Nema 4X) classifications.

Programming is done via the front keypad including flow K-factors, Engineering unit selection, 4-20 mA analog Output Spans,High and Low Flow Alarms & linearisation.

OptionsFlomec