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Thermo Polysonics SX40 Doppler Flowmeter

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THE Polysonics SX40 is a dedicated doppler flowmeter that uses a patented digital signal processing technique to determine the flow of liquids that contain particulate or air bubbles.

Available from Procon Instrument Technology Pty Ltd , the meter incorporates clamp-on sensors, which are easily installed for sludge management in sewage treatment plants and industrial applications such as slurry and effulent monitoring.

The Hydra SX40 is designed as a permanently installed flowmeter and is also available from Procon. Its large backlit graphics display provides excellent visibility even in poorly lit environments.

As well as flow rate and flow total, a flow trend is available to quickly analyse flow over a period of time. This is especially useful for analysing pump cycling activity.

Standard outputs include 4-20mA, RS232 serial interface and up to four programmable relays.

The flowmeter also incorporates a 90,000-point data logger.


Flow range: 0.2 to 18 ft/s (0.06 to 5.5 m/s)

Accuracy: 1% of total error band

Linearity: 0.1% of scale, digital output

Pipe size: 0.5”. to 200” (12mm to 5m)

Enclosure: NEMA 4X (IP65)

Outputs: 4-20mA, RS232, 5A SPDT relay (up to 4)

Transmitter temperature: -20°C to 60°C

Transducer temperature: -40°C to 122°C.

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