Turbidity Series 30 Sensors
The T30 sensor is a new generation of Quadbeam process sensors, which combine both light attenuation and 90 degree scattered light measurements in a ratiometric sensor with digital communication. This technique vastly increases the sensitivity compared to sensors using just light attenuation. The T30 is designed to meet the international standards for turbidity measurement ISO 27027.
The T30 sensor has two emitters and two detectors, set at exactly 90 degrees to each other. As each emitter is pulsed in sequence it produces two detector currents, one from the detector opposite the emitter (attenuation) and the other from the detector at 90 degrees to the emitter (scattered light).
Signals from each detector are fed into the microprocessor which calculates the value of Turbidity from the ratio of the two emitter/detector pairs.
A built in cleaner is standard with the immersion version of the T30. High pressure air with optional biocide is the recommended method of cleaning. The stainless steel support rods aredesigned to lift the sensor fingers above the floor of the drain and to protect the sensor fingers from impact.
Applications
- Monitoring of clarifier overflow weirs.
- Final outlet of effluent from DAF plants.
- Raw water inlet measurements in water treatment plants.
- Surface water monitoring.
- Solids loading in rivers and streams.
- Product breakthrough on plate heat exchangers.
- Percentage solids in fruit and vegetable juices.
Key Features
Ratiometric signal process compensates fror changes in the optical properties of the emitters and detectors due to ageing and surface coating
Effects of colour, temperature and changes in background ambient light are virtually eliminated.
The T30 sensor is designed for use with the QuadbeamTM MSSD53 microprocessor based transmitter providing both relay and/or analogue outputs.
Measuring Range
0 to 50 through to 0 to 1000 FNU/FTU/NTU
(The measuring range will vary according to media and particle characteristics)
Accuracy
+/- 2% of reading
Repeatability
+/- 1% of reading
Temperature
0 to 80oC operating range
Pressure
10 BarG
Cable
Polyurethane covered cable rated to 95oC. Extension cables can be supplied to extend the cable length up to a maximum of 100M.