HOVERFLO 2 ALL PLASTIC
The Hoverflo will accurately
measure the flow of highly corrosive, aggressive and non lubricating liquids
drift or wear
Accurate measurement of difficult liquids
of flowmeters is used for measuring highly corrosive solutions such as nitric,
sulphuric, hydrochloric and hydrofluoric acids. It is ideal for measuring
agressive and non-conductive liquids which have proven to be incompatible with
most magnetic and mechanical flowmeters.
The long term reliability and
stability of the Hoverflo make it ideal for both batch and continuous process
In hazardous areas you can use the flowmeters with the Apollo IS
pick-off coil, approved 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.
Principle of Operation
The flowmeter has two turbines connected by a central
shaft. The liquid flows through both turbines, spinning the shaft whilst it
hovers. The lower turbine has magnets sealed in the rim which are detected by
the sensor to generate pulses. The frequency of the pulses is proportional to
your flow rate.
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.
parts are either PVC or PVDF for maximum chemical resistance. The seals are
PTFE or viton. The meter combines the advantages of a turbine flowmeter without
the problems of bearing wear.
All Apollo 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.
The flowmeter is installed horizontally in the pipeline.
To reduce turbulence and achieve 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.
should be installed downstream of the flowmeter.The flowmeter must be kept full
of liquid and reverse flow must be avoided.
An amplifier is required if you
need to transmit the signal more than 4 metres, or if there is an electrically
noisy environment close to pumps, solenoids, switchgear or high current cables.
Intrinsically safe systems always require an IS pick-off coil. The IS P5
preamplifier is required for transmission to the safe area through barriers.
Hoverflo Flow Ranges
||Overall flow range
|Linear flow range
||3.5 - 35
||+/- 0.5% (+/-1.0% for 15mm) of reading in linear
||+/-1.0% of maximum reading for the overall
||+/-0.125% of reading
||0.85 bar at maximum flow
||PVC body 8 bar at 20 oC
||PVDF body 16 bar at 20 oC
||PVC -10 to 60 oC
||PVDF -10 to 110 oC
||Socket weld or stub flanges with backing
|Pickoff coil output :
||Sine wave mV high frequency signal
To view the Hoverflo pdf data sheet click here:
||PVC or PVDF
||PVC or PVDF
|Measuring cartridge and rotor:
||PVC or PVDF
|Upper and lower sealing plates:
||PVC or PVDF with 316 s/s cover plate
|Studs and nuts:
||Viton or PTFE
available data sheets and manuals click here:
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