AWQ-NTU Sensor
The AWQ-NTU sensor is an optical sensor for the measurement of Nephelometric Turbidity.
• IR optical sensor with optical fibre
• Range: 0 to 4000 NTU or 0-4500 mg/L
• Robust and waterproof (IP68)
• Ultra low-power consumption
• Digital output: Modbus RS-485 or SDI-12
APPLICATIONS:
• Urban wastewater treatment (inlet/ outlet controls)
• Sanitation network
• Industrial effluent treatment
• Surface water monitoring
• Drinking water
Utilising the AWQ-NTU Sensor in a custom IoT (Internet of Things)
The SNiP-NTU is a ‘Sensor Node Integrated Package’ for LoRaWAN or CAT-M1 communication of real-time nephelometric turbidity and temperature measurements for continuous water quality monitoring.
The base SNiP-NTU integrates 1x AWQ-NTU Sensor with 1x S-NODE to a site’s unique network, communication and power requirements. The S-NODE can support an added 3x compatible sensors.
OPTICAL TECHNOLOGY
• The measurement principle is based on IR nephelometry/850 nm. The sensor can be calibrated with a formazine standard solution.
• The AWQ-NTU sensor uses low-cost optical technology, requiring very little maintenance and no consumables.
DIGITAL COMMUNICATION
The sensor can be connected to any types of transmitters, display units, controllers, or data loggers with Modbus RS-485 or SDI-12 inputs. The optical sensor saves its calibration data for better measurement management.
INTEGRATED TRANSMITTER
All data concerning calibration, history, users and measurements are processed within the AWQ-NTU sensor and transmitted via RS-485 or SDI-12.
PHYSICAL CHARACTERISTICS
Compact, robust and light, the PVC sensor allows for handheld or fixed unit application.
| Measurement: | |
| Measurement Principle: | Diffusion IR at 90° |
| Measure range: | 0 to 4000 NTU in 5 ranges: • 0 – 50 NTU • 0 – 200 NTU • 0 – 1000 NTU • 0 – 4000 NTU • AUTOMATIC OR 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 |
| Resolution: | 0.01 to 1 NTU – mg/L |
| Accuracy: | < ±5% |
| Temperature Measurement: | NTC Thermistor |
| Interface: | Modbus RS-485 (standard); SDI-12 (optional) |
| Measurement Frequency: | 1Hz |
| Power Requirement: | 5 to 12 volts DC |
| Standby Current Draw: | 40 μA |
| Average RS485 Draw (1 measurement/second): | 820 μA |
| Average SDI12 Draw (1 measurement/second): | 4.2 mA |
| Current Pulse: | 500 mA |
| Sensor: | |
| Operating Temperature: | 0°C to +50°C |
| Storage Temperature: | -10°C to +60°C |
| Dimensions: | Diameter: 27 mm; length: 170 mm |
| Weight: | 300g (sensor and 3 meter cable) |
| Construction: | PVC, DELRIN, Quartz, PMMA, Polyamide |
| Maximum Pressure: | 5 bar |
| Connection: | 9 armoured connectors, polyurethane jacket, bare-wires or waterproof Fischer connector |
Dimensions (mm)
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