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Home » Products » SNiP-pHR for pH/Redox

Water Quality Sensors installed to Metal Sheet Covering (pHERT, bottom)

S-NODE for Aquaculture Water Quality Application

PHERT (bottom) before complete installation. Additional sensors are possible due to ICT's modular Nodes.

Water Quality Sensors in Protected Installation

S-NODE in enclosure on bank of water way

SNiP-pHR for pH/Redox

The SNiP-pHR is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time pH, Redox and temperature measurements for continuous water quality monitoring.

Base SNiP-pHR

The base SNiP-pHR integrates 1x S-NODE and 1x pHEHT Sensor to a site’s unique network, communication and power requirements. The S-NODE can support an added 3x Sensors.

The pHEHT sensor has been designed to perform under hard conditions, from pure mountain water with conductivity as low as 20 μS/cm, lakes and rivers (100 – 2000 μS/cm), seawater with conductivities of 50 mS/cm, to wastewater with conductivity higher than 200 mS/cm.

RANGE

pH : 0 to 14
Redox: -1000 to +1000 mV
T°C : -10°C to +50°C
Combination pH/Redox/Temp sensor
Digital Sensor: Modbus RS 485/SDI-12
Internal Calibration Data Storage
pH/ORP Cartridge

See Further Specifications on the S-NODE
See Further Specifications on the pHEHT Sensor

This sensor features long-life Plastogel® reference technology, increasing the lifetime of the probe and reducing the need to refill.

The pHEHT sensor has been designed for handheld and in-situ applications in some of the most difficult situations for a pH/ORP sensor in term of sensor resistance, quick response, minimal flow dependence and low power consumption.

DIGITAL TECHNOLOGY

The pHEHT pH/Redox/Temp sensor stores calibration and history data within the sensor. This allows for use in a plug and play system without the need for re-calibration.

Thanks to the Universal Modbus RS485 protocol and SDI-12, the pHEHT sensor can be connected to most commonly used devices (Datalogger, Controller, Automation, Remote System…).

S-NODE

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.

LoRaWAN™ low-power long-range connectivity
Supports the full range of SDI-12 commands, and sensors requiring constant excitation.
Optional CAT-M1
Solar rechargeable Lithium-ion or external 12V power options
Optional Multi-constellation GNSS
AS923, AU915 and US915 available, with other region plans available upon request.
Standard IP65 enclosure, optional IP67

pHEHT Sensor

pH
Measurement Principle:	Combined electrode (pH/ref): special glass, Ag/AgCI ref. Gelled electrolyte (KCI)
Range:	0 – 14 pH
Resolution:	0.01 pH
Accuracy:	± 0.1 pH
Redox
Measurement Principle:	Combined electrode (Redox/reference): Platinum tip, Ag/AgCI AgAgCl. Gelled reference (KCI)
Range:	-1000 to +1000 mV
Resolution:	0.1 mV
Accuracy:	± 2 mV
Temperature
Technology:	NTC Thermistor
Range:	0°C to 50°C
Resolution:	0.01°C
Accuracy:	± 0.5°C
Response Time:	< 5 s
Sensor
Interface:	Modbus RS-485 standard; SDI-12 optional
Power supply:	5 to 12 volts
Current Draw:	Standby: 25μA Average RS485 (1 Hz): 3.9 mA Average SDI12 (1 Hz): 6.8 mA Current pulse: 500 mA
Storage Temperature:	0°C to 60°C
Protection:	IP 68
Dimensions:	Diameter: 27/21mm; Length: 207mm
Weight:	350g (sensor and 3m cable)
Material:	PVC, DELRIN, special pH glass, platinum, polyamide
Maximum Pressure:	5 bar
Cable:	Coaxial armoured, Polyurethane, bare wire or Fischer connector
Protection:	IP68

Dimensions (mm) pHEHT Dimensions