Ideal for
- HVAC
- Water distribution
- Boiler feed
- Irrigation
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Features
- Economical
- 40 to 900 mm pipes
- 0.3 to 10 M/S velocity
- Low installation cost
- Pulse output
- 80 Bar
- 100 and 200°C models
- Simple apparatus option
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This innovative, robust insertion turbine combines
proven technology with modern materials and design. The turbine
rotates freely on graphite/PTFE impregnated PEEK™ bearings
and has specially aerofoil shaped blades to extend the dynamic
range of the meter. The specially contoured housing further
improves the meters linearity particularly at lower fluid velocities.
Each meter contains two sensors, one self powered (for our battery
operated equipment) and the other an open collector transistor.
A reed switch may be specified for hazardous areas were simple
apparatus is acceptable. The body is manufactured from AISI316
stainless steel and as standard is supplied with three meters
of five core screened instrument cable. The Metra-count, view,
smart and batch can all be mounted directly onto the meter (via
a mounting stalk) and all of these can be self powered with
the exception of Metra-batch which requires an external power
source.
Insertion flowmeters measure the point velocity
of the liquid in a pipe. Flows in very large pipes can be measured
this way using relatively inexpensive metering devices. There
are two basic types of insertion turbines, an axial (propeller
type) and a radial type (undershot water wheel). Overall accuracy
is similar in either case. In both turbine types the fluid velocity
profile in the pipe must be “fully developed” as
the arithmetic for the whole pipe throughput is derived from
this point flow measurement. Upstream disturbances such as control
valves, pipe bend, pumps and pressure regulators must be positioned
well away from the flow meter insertion point, up to 100 pipe
diameters in the worst case. Due to the relatively small disturbance
the metering head introduces to the pipe, pressure losses for
this type of flowmeter are very low making energy savings by
reducing pumping costs. Some types of insertion turbine are
self powered permitting their use in remote areas where power
is an issue.
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Product Directory
Insertion Turbine
Sight Flow Indicators
Calibration
