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Additional information:

When a local sewage treatment plant in Germany for example achieves a reduced discharge value of at least 20 % by using a VARiON®, the owner of the plant is entitiled to make a declaration regarding the compliance of low monitoring values acc. to § 4 Abs. 5 AbwAG.
The amount of investment can be considered with the calculation for wastewater charges for the past 3 years if applicable.

IQ-LabLink – the link to the world of laboratory

IQ-LabLink enables a save data exchange between the IQ SENSOR NET and the laboratory instrument. The exchange is processed via a common USB memory stick, serving as data medium between the Online system and the laboratory instrument. The condition is that both instruments feature this function and are equipped with a USB interface. The first WTW instruments to include this function are the two new spectrophotometers photoLab® 6100 VIS and photoLab® 6600 UV-VIS (laboratory instruments) and the terminal/controller MIQ/TC 2020 XT with access to the IQ SENSOR NET.

more about IQ-LabLink ...
more about spectrophotometers ...
more about system 2020 XT ...

further Products

Nitrogen Measurement with IQ SENSOR NET Systems
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further Products

in-situ UV/VIS probes:
NitraVis®-System
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further Products

Nitrogen Measurement with Analyzers:
TresCon® OA 110,
TresCon® ON 210/OS 210 and
TresCon® ON 510
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Analyzer Systems
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WTW ISE sensors

VARiON® Plus 700 IQ

  • In-situ combination sensor for ammonium and nitrate
  • 2 compensated parameters simultaneous
  • Economic, cost-effective
  • Calibration-free, long time stable

Ammonium and Nitrate ion-selective with automatic compensation of interferences:
Ion-selective measurements directly in process – reliable 24 hours a day.
The new highly variable ionic sensor VARiON®Plus allows:

  • The continuous measurement of ammonium – with online compensation of potassium ion interference by using potassium ISE.
  • The new electrode VARiON®Plus NO3-HS enables the measuring of nitrate without chloride compensation electrode.
  • You can measure ammonium and nitrate using one sensor with perfect gradient display.

For measurement, simply insert the suitable electrode into the sensor, everything else is working automatically. The display shows the already compensated values. The potassium measuring value can be displayed optionally. These values are available via the 0/4–20 mA analog outputs or via the digital output PROFIBUS or Modbus.

Ammonium Measurement    
Appropriate Electrodes: Reference Electrode VARiON®Plus Ref
  Measuring Electrode VARiON®Plus NH4
  Compensation Electrode VARiON®Plus K
Measuring Ranges/ Resolution NH4-N: 1 ... 1000 mg/l / 1 mg/l;
0.1 ... 100 mg/l / 0.1 mg/l
  NH4+: 1 ... 1290 mg/l / 1 mg/l;
Compensation Ranges   0.1 ... 129.0 mg/l / 0.1 mg/l
  K+: 1 ...1.000 mg/l / 1 mg/l
Nitrate Measurement    
Integrable Electrodes: Reference Electrode VARiON®Plus Ref
  Measuring Electrode VARiON®Plus NO3
or VARiON®Plus NO3-HS
  Compensation Electrode VARiON®Plus Cl
Measuring Ranges/ Resolution NO3-N: 1 … 1.000 mg/l / 1 mg/l;
0.1 ... 100 mg/l / 0.1 mg/l
  NO3-: 5 … 4500 mg/l / 1 mg/l;
Compensation Ranges   0.5 ... 450.0 mg/l / 0.1 mg/l
  Cl-: 1 ...1.000 mg/l / 1 mg/l
Temperature Measurement
and Compensation		 Integrated NTC thermistor,
Range
Accuracy
Resolution
0 °C … +40 °C (32 °F … 104 °F),
±0,5 K,
0.1 K, t95 < 20 s

AmmoLyt® Plus

  • In-situ-Ammoniumsensor with potassium compensation
  • Economic, cost-effective
  • Calibration-free, long term stable
  • Short response time

Ammonium Measurement directly in the Medium – without Sample Preparation:
The continuous measuring of O2 and NH4 can result in significant savings through:

  • energy-optimized operation due to demand-oriented regulation of aerator aggregates,
  • adherence to critical values or reduction of wastewater charges.
  • The potassium measuring value can be displayed optionally.

The low investment costs for the system can thus be amortized after a short period.

Ammonium Measurement    
Appropriate Electrodes Reference Electrode VARiON®Plus Ref
  Measuring Electrode VARiON®Plus NH4
  Compensation Electrode VARiON®Plus K
Measuring Ranges/Resolution NH4-N: 1 ... 1000 mg/l / 1 mg/l;
0.1 ... 100 mg/l / 0.1 mg/l
  NH4+: 1 ... 1290 mg/l / 1 mg/l;
0.1 ... 129.0 mg/l / 0.1 mg/l
Compensation Ranges K+: 1 ...1000 mg/l / 1 mg/l
Temperature Measurement
and Compensation		 Integrated NTC thermistor,
Range
Accuracy
Resolution
0 … +40 °C (32 … 104 °F),
±0,5 K,
0,1 K, t95 < 20 s

NitraLyt® Plus

  • In-situ nitrate sensor with optional chloride compensation
  • Economic, cost-effective
  • Calibration-free, long term stable
  • Short response time

Nitrogen Elimination Process – monitored, optimized, cost effective:
The optimization of nitrification/denitrification during wastewater treatment is simplified even further by the new NitraLyt®Plus system:

  • Nitrate is also directly measurable during the process in addition to oxygen and ammonium.
  • Measured values are promptly available and can be used directly to control the process.
  • Low investment and maintenance costs (automatic compressed air cleaning system).
Appropriate Electrodes Reference electrode VARiON®Plus Ref
  Measuring electrode VARiON®Plus NO3
or VARiON®Plus NO3-HS
  Compensation electrode VARiON®Plus Cl
Measuring Ranges/Resolution NO3-N: 1 ... 1000 mg/l / 1 mg/l;
0.1 ... 100.0 mg/l / 0.1 mg/l
  NO3-: 5 ... 4500 mg/l / 5 mg/l;
0.5 ... 450.0 mg/l / 0.5 mg/l
Compensation Ranges Cl-: 1 ...1000 mg/l / 1 mg/l
Temperature Measurement
and Compensation		 Integrated NTC thermistor,
Range
Accuracy
Resolution
0 °C ... + 40 °C (32 °F … 104 °F),
±0,5 K,
0.1 K, t95 < 20 s