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Apollo Flow Measurement
Ltd
Charles Street
Walsall
WS2 9LZ
Tel 01922 645647
Tel 0800 3286674
Tel +44 1922 645647
sales@apolloflow.co.uk
RN TURBINE FLOWMETER
This range of
flowmeters will provide you with a highly accurate and economical way of
measuring liquids over the range of 1 to 9000 litres/min.
Corrosion
resistant
Robust stainless steel construction
Very low maintenance and
down time
Withstands high temperature and pressure
Highly accurate
measurement of flow
Well proven
Improve product quality
Reduce
waste and costs
Approvals for use in hazardous areas
Individual
calibration certificates
Low pressure drop
Bi-directional flow
capability
Application
This range of flowmeters is used for liquids such as
water, light oils, solvents and low viscosity chemicals. You can use them for
batching, flow rate monitoring, controlling, blending and filling. The
flowmeter is highly accurate and often used for testing the performance of
pumps, engines, valves and other flowmeters.
In hazardous areas you can
use the flowmeters with the Apollo IS pick-off coil approved to ATEX II I G EEx
ia IIC T5. The signal can be used in the IS area or transmitted to the safe
area using the intrinsically safe P5 preamplifier and suitable barriers.
Instrumentation
The signal can be used for a local display, remote
display or converted for transmission to a separate control system. Apollo have
a range of instruments to suit all your requirements.
Principle of Operation
When liquid flows and the rotor turns, the sensor detects
the movement of the blade tips and generates pulses. The frequency of the
pulses is proportional to the flowrate.
Construction
The stainless steel construction is durable and gives
excellent corrosion resistance. The rotor is machined from solid making it
virtually indestructible. The sleeve bearings provide you with highly reliable
performance over long periods.
Calibration
All Apollo RN turbine flowmeters are individually
calibrated with water and are traceable to national standards.
We provide
you with a test certificate for each meter showing the number of pulses per
litre, which is used to set the instrumentation.
Installation
The flowmeter is installed directly into the pipeline.
To reduce turbulence and get the best results from your flowmeter we
recommend that you install it in a straight section of pipe with at least 10
pipe diameters upstream and 5 pipe diameters downstream. Control valves should
be installed downstream of the flowmeter. To prevent foreign particles blocking
your line we recommend you install a filter before the flowmeter.
Preamplifiers are only needed if you have very long transmission distances or
an electrically noisy environment close to pumps, motors, generators,
switchgear or heavy current carrying cables.
Intrinsically safe systems
always require an IS pick-off coil. The IS P5 preamplifier is required for
transmission to a safe area through barriers.
RN3 Flow Ranges (Threaded Body)
| Model No | BSP Connections | Flow Range Ltr/min | K factor pulses / litre |
| RN3/15/2 | 1/2" | 2-20 | 3800 |
| RN3/20/5 | 3/4" | 5-50 | 1080 |
| RN3/20/8 | 3/4" | 8-80 | 1080 |
| RN3/25/15 | 1" | 15-150 | 620 |
| RN3/25 | 1" | 25-250 | 362 |
| RN3/32 | 11/4" | 45-450 | 111 |
| RN3/40 | 11/2" | 67-670 | 82 |
| RN3/50 | 2" | 110-1100 | 59 |
| RN3/65 | 21/2" | 225-2250 | 19 |
RN4 Flow Ranges (Flanged Body)
| Model No | Flange size mm | Flow Range Ltr/min | K factor pulses / litre |
| RN4/20/5 | 20 | 5-50 | 1080 |
| RN4/20/8 | 20 | 8-80 | 1080 |
| RN4/25/15 | 25 | 15-150 | 620 |
| RN4/25 | 25 | 25-250 | 362 |
| RN4/32 | 32 | 45-450 | 111 |
| RN4/40 | 40 | 67-670 | 82 |
| RN4/50 | 50 | 110-1100 | 59 |
| RN4/80 | 80 | 225-2250 | 19 |
| RN4/100 | 100 | 450-4500 | 6.6 |
| RN4/150 | 150 | 900-9000 | 2.3 |
Specification
| Linearity: | +/- 0.5% of reading throughout the linear range |
| Repeatability | +/-0.1% of reading |
| Maximum overrange: | Up to 120% of the maximum flow rate for short durations |
| Maximum pressure RN3 | 35 bar (special connections up to 350 bar) |
| Maximum pressure RN4 | To flange rating |
| Body connections RN3 | BSP parallel thread with 60o cone |
| Body connections RN4 | Flanged ANSI, BS4504 or BS10 |
Materials of Construction
| Body | 316 stainless steel |
| Sleeve bearings: | Carbon graphite filled PTFE (max temp. 180 oC) |
| Optional tungsten carbide ( max. temp. 300 oC) | |
| Thrust balls | Tungsten carbide |
| Rotor | 431 s/s or ferralium |
| Rotor shaft | Tungsten carbide |
| Hangers | 316 stainless steel |
| Circlips | 316 stainless steel |
To see available data sheets and manuals click here: Download Area
Click below to switch to the following
flowmeters:
RN Turbine| Hygienic Turbine
|Electromagnetic | Hoverflo |
Lowflo/Peltflo | Variable Area |
Oval Gear PD | Positive
Displacement | Mass | Water
Meter | Ultrasonic | Vortex