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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 | |
| Measurement principle |
Diffusion IR at 90° |
| Measured ranges |
0 to 4000 NTU in 5 ranges: 0 - 50 NTU, 0 - 200 NTU, 0 - 1000 NTU, 0 - 4000 NTU, 0 to 4500 mg/L. Calibration: Range 0-500 mg/L according to NF EN 872 Range >500 mg/L according to NF T 90 105 2 AUTOMATIC |
| Resolution |
0,01 to 1 NTU - mg/L |
| Accuracy |
|
| Temperature compensation |
via CTN |
| Operating temperature |
-10°C to + 60°C |
| Signal interface |
Modbus RS-485 (standard) and SDI-12 (option) |
| Maximum refreshing time |
|
| Sensor power-supply |
5 to 12 volts |
| Electric consumption |
Standby: 40 μA, Average RS485 (1 measure/second): 820 μA, Average SDI12 (1 measure/second) : 4.2 mA |
| Sensor | |
| Dimensions |
Diameter: 27 mm; length: 170 mm |
| Weight |
300 g (sensor + cable 3 metres) |
| Material |
PVC, Quartz, PMMA, Nickel-plated brass |
| Maximum pressure |
5 bars |
| Connection |
9 armoured connectors, polyurethane jacket, bare-wires or waterproof Fisher |
| Degree of protection |
IB68 up to gland |
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