NTU Nephelometric Turbidity & Temperature Sensor Optical technology : The measure principle is based on IR nephelometry / 880 nm (ISO 7027). The sensor can be calibrated with a formazine standard solution. The NTU sensor integrates a low-cost optical technology, with a very few maintenance and no consumables. NTU Nephelometric Turbidity & Temperature Sensor Digitally optimised measurement technology * IR optical sensor with optical fibre * Range: 0-4000 NTU or 0-4500 mg/L * Digital sensor: Modbus RS-485 * ISO 7027 compliant * Robust and waterproof NTU Nephelometric Turbidity & Temperature Sensor Applications * Industrial effluent treatment * Urban waste water treatment * Surface water monitoring * Drinking water * Sanitation network NTU Nephelometric Turbidity & Temperature Sensor Specifications * Measurement principle: Diffusion IR at 90' * Range: 0-4000 NTU or 0-4500 mg/L * Resolution: 0,01 to 1 NTU - mg/L * Accuracy: < 5% of the reading * Temperature compensation: via CTN * Operating temperature: -10'C to + 60'C * Signal interface: Modbus RS-485 (standard) and SDI-12 (option) * Sensor power-supply: 5 to 12 volts -