unio GROUNDWATER QUALITY

Reliable, energy self-sufficient measuring stations for long-term groundwater monitoring with customizable energy supply and sensor technology. Monitor water level, temperature, conductivity, oxygen content, nitrate and much more online at your measuring points.

Description

Suitable housing sizes

Variable housing sizes for remote or direct mounting on the level tube of the groundwater measuring point made of weather-resistant stainless steel with vandal-proof locking. Ready-to-connect sets simplify and speed up commissioning in the field.

Solarpanel, Netzstecker und Batterie
Flexible energy supply

To adapt to the desired signal range and the frequency of measurement and transmission, integrated or remote solar systems with online charge level display and mains-powered versions are available in addition to the purely battery-powered or rechargeable battery-powered versions.

Universal field interfaces

Gain deep insights into your water quality. In addition to the basic parameters of water level, temperature and conductivity, sensors are available for oxygen content, turbidity, redox potential, pH value, ammonium, nitrate, UV permeability, color and many more.

Reliable connectivity

The future-proof LTE-M1/NB-IoT mobile technology with integrated SIM brings your measurement data reliably from the field to the office throughout Europe. A real-time clock and memory-to-memory synchronization ensure a seamless connection to the cell.datacenter without data gaps.

PC und Handy mit Zugriff auf Online-Datencenter
Online data access and remote configuration

You can view your measurement data online at any time via the web platform, the cell.datacenter, using a PC, tablet or smartphone. This also ensures data storage, log generation and remote configuration. No further software is required.

Alarmglocke und Bitmuster mit Upload-Pfeil
Alerting and data forwarding

Monitor the water quality using limit values and receive timely alerts via high-priority SMS or email. With our OPC-UA & REST-API interfaces, you can forward pre-processed data to third-party systems (control technology, websites, ERP, etc.).

unio GROUNDWATER QUALITY

Product information

unio GROUNDWATER QUALITY

Technical Datasheet
COMPACT versionPRO versionEXTREME version
Housing and protection classStainless steel housing200x300x155, IP66for mounting on the water level tubeStainless steel housing380x380x210, IP66removed pole mountingStainless steel housing600x600x210, IP66stepped pole mounting
Power supplyBattery 7.2V/94Wh, or double battery system 12V/84Wh + 3.75V/51Wh, optional solar panel 30WBattery 7.2V/94Wh, or dual battery system 12V/144Wh + 3.75V/51Wh, solar panel 30WDual battery system up to 12V/624Wh + 3.75V/51Wh, solar panel 100W
Data transmissionMobile radio 2G/M1/NB1, integrated SIM chip, Bluetooth Low Energy 5.0
Interfaces4x universal input digital/analog, 1x RS232, 1x RS485, 1x PT100/1000Optional: 1x RS485 galvanically isolated, 1x SDI-12
Internal sensorsInput voltage, SOC (state of charge), battery life in days, mobile phone strength, humidity and temperature in the device
Sensor supply2x switchable 3.3V (max. 180mA), 1x switchable 5..24V (max. 1.5W), 1x switchable battery voltage 12V/2.5A (EXTREME version only)
InterfacesRGB LED, magnetic switch, 1.5" full color display (optional for EXTREME version)
Water levelMeasuring range: 0..10/300 mWs, accuracy: ±0.05%FS* (level probe PT+)
TemperatureAccuracy: ±0.1°C (PT+ level probe)
ConductivityMeasuring principle: 4-electrodes, measuring range: 0..500mS, accuracy ±0.1% of measured value
Oxygen contentMeasuring principle: fluorescence, measuring range: 0..25mg/l, accuracy ±0.02 mg/l or ±1% **
Further sensors available forpH value, redox potential, ammonium (NH4-N), nitrate-nitrogen (NO3-N), filterable substances (AFS)additionally AFS, TS, turbidity, color, TOC, DOC, BOD, COD, NO3-N, NO-3, UV254

* FS = FullScale (set measuring range). e.g: Accuracy 0.1% at FS 10 mWs = 1 cm (valid at 20-25°C).

** depending on which value is greater.

The Application

Compact design installed on the water level tube of the groundwater measuring point with alternating battery operation

Remote design with solar power supply for larger parameter range and more frequent measurement and data transmission

Compact and efficient, easy-to-maintain system design in a stainless steel housing with vandalism protection

Stable and expandable probe suspension device for hanging in groundwater measuring points or wells

How we see what's in the water.

Out of the lab, into the water. Away from complicated and high-maintenance cabinet analyzers and towards reliable and simple on-line technologies.

Choose from a large portfolio of suitable sensors – we are also happy to check the integrability of third-party sensors in our unio GROUNDWASER QUALITY system.

Water level and temperature

The water level is recorded using water level probes and is the key quantitative parameter. The course of groundwater levels provides information on groundwater recharge and the effects of abstraction. The water temperature is a qualitative basic parameter. Constant values indicate long residence times in the subsurface.

Conductivity

Electrical conductivity is a sum parameter for the content of dissolved ions, which can come from salts, minerals and chemicals. Conductivity is an easy-to-measure but very helpful quality parameter. Salinization, mixing or contamination processes can be detected.

Oxygen content

The oxygen content in the water is measured optically using the fluorescence method. It provides information on whether the water has an oxidizing or reducing effect. Reducing ratios indicate, for example, a possible breakdown of nitrate.

pH value

The pH value indicates whether acidic or alkaline conditions are present. The pH value influences many chemical and biological processes. Acidic water is aggressive and dissolves heavy metals more easily.

Nitrate

Nitrate (NO3) and nitrite (NO2) can be detected digitally using spectrometric measurement. Nitrate provides information on the pollution of groundwater with fertilizers. Nitrite is formed as a biological degradation product of nitrate. Both substances are particularly dangerous for infants in drinking water.

Spectrum

Spectral analysis probes are true all-rounders for monitoring water quality. Parameters such as TOC, DOC, turbidity, color, UV254, BTX and much more can be precisely recorded. In addition, the entire spectrum can be analyzed to create fingerprints and spectral alarms.

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Additional information

Application

Solution

Product Type

Control capability

Local control