Flowmeters: Insertion turbine:
- Economical
- For 40 –100mm pipes
- 0.3 to 10 M/S velocity
- Linearity 1˝% typical
- 316 St St body
- Dual sensing
- Low installation cost
- Pulse output
- 80 Bar rating
- Viton seal
- 1˝” fitting
- 1% Repeatability
- IP68 (NEMA 6)
- 100°C standard
- 200°C Option
- Simple apparatus option
- Ideal for:
- HVAC
- Water distribution
- Boiler feed
- Irrigation
Flowmeters: Insertion turbine: Specification
- Pipe sizes: 40 to 900 mm
- Velocity range: 0.3 to 10M/Sec
- Fitting siz:e 1˝” BSPT or NPT
- Linearity: ± 1.5 % typically
- Repeatability: ± 0.5 % typically
- Pressure: 80 Bar Maximum
- Temperature: -40°C to +100°C
- Temperature - Optional: 200°C
- Body material: 316 Stainless steel
- Rotor material: PEEK™
- Bearing: PTFE/graphite
- impregnated: PEEK™
- Spindle: Tungsten carbide
- ‘O’ ringv Viton™
- Outputs: Open collector pulse
- Outputs: 1.5V X 10S pulse
- Outputs: Reed switch (optional)
- Frequency: 230 Hz @ 10 M/Sec
- Frequency:77 Hz with reed switch
- Cable: 3m X 5 core screened
- Protection: IP68
- Options: Mounted instruments
- Options:200°C sensor
- Options:Reed switch sensor
- Options:Conduit entry
Flowmeters: Insertion turbines - Order codes
Standard meter
- BSPT mount 400-003
- NPT mount 400-004
- Mounting
- stalk 400-005
For local instrument mounting
Flowmeters: Insertion turbine: Standard Materials of construction
Body - 316 St St
‘O’ Ring seal - Viton
Spindle - Tungsten
carbide
Rotor - PEEK™ (PTFE & graphite filled)
Fitting - 1˝” Thread
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Flowmeters: Multi range radial flow transducer meter:
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This innovative, robust insertion turbine combines proven tech-nology 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 sim-ple 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, smart and batch can all be mounted directly onto the me-ter (via a mounting stalk) and all of these can be self powered with the exception of Metra-batch which requires an external power source.
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Meter „K? factors for common pipe sizes
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| Pipe I/D (#40)mm |
Schedule 40 Pipe (#40) |
Schedule 80 Pipe (#80) |
| pulses/litre
| pulses/USG
| pulses/litre
| pulses/USG
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1 1/2" - 40.9
2"- 52.6
2.5" - 62.7
3" - 78.0
4" - 102.0
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18.678
11.238
7.880
5.062
2.912
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70.695
42.534
29.824
19.161
11.021
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21.524
12.818
8.899
5.676
3.233
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81.468
48.517
33.682
21.485
12.237
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To calculate the ‘K’ factor in pulses per litre for a given pipe internal diameter use the formula below.
Pulses/Litre = 1273.2 x (A) from graph/pipe ID2 (mm)
e.g.
For a 100 mm bore pipe (A) = 24
Pulses /Litre = 1273.2 x 24/100 x 100 = 3.056 pulses per litre
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These insertion turbines provide a cost effective and simple means to measure the flow of a wide range of low viscosity liquids. Installation is quick and inexpen-sive in pipes from 40 mm diameter up to 900 mm di-ameter. For rate and total applications a self powered instrument can be mounted directly onto the meter for a stand alone measurement. Other instruments permit high and low flow alarms, 4-20 mA loops or even batch-ing functions, these all require external power. The meter requires at least ten pipe diameters of straight pipe upstream and five downstream to ensure a fully developed flow profile and accurate measurements. Large disturbances may require greater straight lengths.
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Insertion Turbine
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