The SNiP-NTU is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time turbidity and temperature measurements for continuous water quality monitoring.
The base SNiP-NTU integrates 1x S-NODE and 1x AWQ- NTU Sensor to a site’s unique network, communication and power requirements. The S-NODE can support an added 3x Sensors. The NTU Sensor is an optical sensor for the measurement of Nephelometric Turbidity.
APPLICATIONS:
See Further Specifications on the S-NODE
See Further Specifications on the AWQ-NTU Sensor
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.
All data concerning calibration, history, users and measurements are processed within the NTU sensor and transmitted via RS-485 or SDI-12.
Compact, robust and light, the PVC sensor allows for handheld or fixed unit application.
The S-NODE (for Environmental Monitoring) has been designed to support the broad suite of SDI-12 based environmental sensors. The S-NODE can support sensors with higher power requirements; a solar panel can charge either the internal lithium-ion battery or both the node and sensor can be powered by an external 12V system (e.g. battery or mains source).
A decoder suitable for TTN will be provided based upon sensor configuration.
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 |