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The Georg Fischer Signet 4150 Turbidimeter system is claimed to provide accurate, reliable, compliant water quality monitoring for municipal and industrial applications.

The 4150 system measures turbidity via a 90-degree light, which reflects particles as they flow through the small-volume, low-flow glass cuvette.

Air bubbles are eliminated in the cuvette by adjusting the back-pressure valve on the outlet tube.

The cuvette is located in a watertight dark chamber for continuously accurate online measurement.

A replaceable desiccant pack is intended to provide a stable environment to ensure reliable measurements.

According to the company, calibration can be accomplished in less than five minutes by placing the glass cuvette from the measuring chamber into the cuvette holder, while the inlet and outlet tubing is still connected.

The calibration standard allows for dry and multiple system calibrations without mixing chemicals.

After calibration, the unit is up and running with a simple insertion of the glass cuvette into the measuring chamber.

Additional features of the 4150 include a message indicator when the desiccant needs replacing and, as an option, auto/ultrasonic cleaning of the glass inline cuvette for longer runs between maintenance.

The 4150 is available in two measuring ranges: the 0-100 NTU/FNU version is for low-range applications such as drinking water, while the 0-1,000 NTU/FNU range can be used for various applications including raw water and wastewater reclamation.

Georg Fischer

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