1. Insertion Paddle Wheel
FLOMEC
Insertion Paddle Wheel
Flow Meter / Monitor
For Low Viscosity Liquids

3. FLOMEC Introduction Insertion Paddle Wheel Flow Meter / Monitor
Cost effective.
Simple means of measuring the flow.
Wide range of low viscosity liquids.
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.

4. Flomec Robust Features 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.

5. Flomec Paddle Wheel Features Dual independent pulse outputs
All stainless steel construction
Dual independent pulse outputs
Direct input to PLC and Computer
High pressure submersible design
Pipe sizes 1.5” to 100” ( mm)
Electrical interference immunity
Minimal pressure loss
Simple to install
Low installed cost
European CE compliant.

6. Flomec Paddle Wheel Options
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.

7. Paddle Wheel Flow Conditioning at Metering Head
Innovative Design
Flomec
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 ft/sec ( metres/sec), without creating flow cavitation.
Paddle Wheel Flow Conditioning at Metering Head

8. Flomec Paddle Wheel Outputs 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.

9. Outputs
Flomec
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.

10. ALIGNMENT SLOT TO PARRALLEL PIPE
Flomec
Installation
General Arrangement
Standard Installation D
LOCK
ALIGNMENT SLOT TO PARRALLEL PIPE
Examples of insertion depth D :
For 40mm pipe ID ( D= mm )
For 50mm pipe ID ( D= mm )
For 100mm pipe ID ( D= mm )
For 400mm pipe ID ( D= mm )
Z3 Rate Totaliser

11. Flomec Installation Hot Tap Installation DOR Paddle Wheel
2" ball or gate
isolation valve.
DOR Paddle Wheel

12. Other positions around the pipe are acceptable
Flomec
Installation
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
12 o’clock
2 o’clock
Other positions around the pipe are acceptable
10 o’clock
Orientation
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.

13. Fig. 1 Ideal fluid velocity profile
Fluid Flow in Pipes
Flomec
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 would travel through a pipe in a uniform velocity across the diameter of the pipe. The 'velocity profile' would appear as in Fig 1.

14. Fig. 2 Real fluid velocity profile
Fluid Flow in Pipes
Flomec
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.
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.
Fig. 2 Real fluid velocity profile

15. Flomec Fluid Flow in Pipes
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
Flomec

16. Fig. 4 Turbulent flow velocity profile
Fluid Flow in Pipes
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.
Flomec

17. Installation Guidelines
Flomec

18. Flomec Applications 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.

19. Flomec Specifications Model Prefix DP-490 DP-525 Suit Pipe Sizes
mm (11/2" - 36")
mm (2" - 100")
Process Connections
R11/2" Male or 11/2" NPT male
R2" Male or 2" NPT male
Body & O-ring Material
316L stainless steel body & rotor shaft, FPM O-rings
Rotor Material
PVDF ( 100 deg C ) or PEEK ( 200 deg C )
Velocity Range
metres / sec.
( ft / sec.)
Flow Range
litres / sec.
( USGPM)
Linearity & Repeatability
Linearity typically +1.5%, Repeatability +1%, with well established flow profile
Maximum Pressure
80 bar (1200 PSI)

20. Flomec Specifications Model Prefix DP-490 DP-525 Temperature Ranges
Standard -40C0 to 1000 C (-400 to 2120 F) plus option to 2000 C (4000 F)
Outputs (standard) transmission to 1000m (3300 ft) max.
 Voltage Pulse self generated 1.5V x 10s (2 wire) hz max.  Open Collector NPN VDC square wave (3 wire) hz max.
Outputs (optional)
 Reed Switch (2 wire) hz 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).
Conduit Entry
3/8" NPT or PG9 conduit thread (M16 x 1.5 on terminal box option)
Cable
3 metres (10ft) screened 5 core as standard, longer lengths are optional.
Mounting Requirements
BSP / NPT service saddle
Shipping Weights
1.3 kg (3lbs)
1.5 kg (3.3lbs)

21. Flomec Ordering Information Insertion Paddle Wheel DP-490 / DP-525
40-900mm pipes (1.5" - 36") - 1 1/2" BSP/NPT process connections.
DP-525
mm 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 = NBR
P = PTFE ( encapsulated FPM )
E = EPR ( for Ketones only )
Mechanical
Connection
DP-490
R8 = R1 ½” male
R9 = R2 male
N8 = 1 ½” NPT male
N9 = 1000C (1850F – standard )
DP-520
R9 = BSPT male
N9 = 2” NPT male

22. Flomec Ordering Information *Denotes only possible
Insertion Paddle Wheel DP-490 / DP-525
Order Example: DOR-52 4 F R9 H5 00
Output / Electrical
Connections
F1 = NPN OC + 1.5V – pulse + 3 m cable ( standard )
F2 = NPN OC + 1.5V – pulse + 10 m cable
F3 = NPN OC + 1.5V – pulse + 20 m cable
F4 = NPN OC + 1.5V – pulse m cable
F5 = NPN OC + 1.5V – pulse + terminal box on stem kit
F6 = NPN OC + 1.5V – integral electronic ZOD on stem kit
N5*= NPN OC + terminal box on stem kit + high temp. sensor
N6*= NPN OC + integral electronic ZOD on stem kit + high temp. sensor
R1 = Reed switch + 3 m cable
R2 = Reed switch + 10 m cable
R3 = Reed switch + 20 m cable
R4 = Reed switch + 50 m cable
R5 = Reed switch + terminal box on stem kit
Q1 = 2 x NPN OC + 3 m cable
Q2 = 2 x NPN OC + 10 m cable
Q3 = 2 x NPN OC + 20 m cable
Q4 = 2 x NPN OC + 50 m cable
Q5 = 2 x NPN OC + terminal box on stem kit
E1 = Non magnetic rotor for ferrous media, NPN, 3 m cable
E2 = Non magnetic rotor for ferrous media, NPN, 10m cable
E3 = Non magnetic rotor for ferrous media, NPN, 20m cable
E4 = Non magnetic rotor for ferrous media, NPN, 50m cable
T5*= Non magnetic rotor for ferrous media, ind. Coil, terminal box on stem kit
H5*= High temp. inductictive coil, terminal box on stem kit, deg.C
XX = Special option ( specified in clear text, consult factory )
*Denotes only possible
with PEEK rotor

23. Flomec Ordering Information
Paddle Wheel Meter DP-490 / DP cont’d
Electronics
-00 = Frequency output only 3 metres cable - standard
Only for output F6 & N6
Z1 = Electronic ZOD-Z1
Z3 = Electronic ZOD-Z3
Z5 = Electronic ZOD-Z5
B1 = Electronic ZOD-B1
XX = Special option ( specified in clear text )
Special options
None = Without options
Y = Special option (specified in clear text )

24. Flomec Options 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.