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Multiple parameter measurement with zero water loss

Multiple parameter measurement with zero water loss

How to measure multiple parameters in water with zero water loss

With increasing water scarceness worldwide, the need for reliable instrumentation combined with low or no water consumption is continuously rising. Additionally, water works are interested in optimizing their operational expenses, such as the reduction of energy or maintenance costs. How is it feasible to continuously surveil multiple parameters in an effective way to ensure a high quality of drinking water?


The AquaGuard PR 30 was developed as a reliable multiparameter measurement system with zero water loss as it is for the usage directly in the water. The AquaGuard PR 30 measures:

  • Turbidity according to ISO7027
  • pH
  • Redox
  • Electrical conductivity
  • Dissolved Oxygen
  • Temperature

With this instrument, Sigrist is expanding its portfolio in the drinking water industry and addressing the fact of water scarceness. With up to five measurable parameters a broad span of quality points can be covered or derived from it. A measurement of turbidity, conductivity, dissolved Oxygen, and temperature for example can provide some qualitative information on microbiological activites in water

Typical Application

Groundwater catchments can be as low as 30 m below ground. This requires expensive and maintance- heavy installations (pumps, additional lines) to provide water to analytical equipment. Here, the AquaGuard PR 30 is the ideal device as it comes with a cable length of 10 m or 20 m, or according to the waterwork‘s need.

Customer Benefits

  • Direct measurement in water catchment area without expensive or complex installation => results in a reduction of operational costs for energy-consumption, maintenance, and installations
  • Reliable measurement already at a water level of 0.1 m => Employable even in very dry regions or seasons
  • High precision measurements for compliance with current drinking water directives (EU 2020/2184, TBDV 817.022.11)
  • Flexible installation according to specific customer needs with possibility of upgrade => Adaptable to water depths of 50 m and combination of measurement tasks

Further Measureing Tasks (Examples)

So far, Sigrist has been focusing on measuring water quality parameters in drinking water catchments. However, the AquaGuard PR 30 can also be used in other applications such as:

  • Environmental monitoring in lakes, rivers, or other surface water biospheres
  • Monitoring of possibly hazardous areas close to industrial sites or highways.
  • Temporary monitoring of water quality on construction sites

Technical Data

Parameter Range
Turbidity 0 … 4000 FNU (Resolution: 0.001 FNU)
pH 0 … 14
Redox -1500 mV … 1500 mV
Conductivity 1 … 300‘000 μS/cm
Dissolved Oxygen 0.004 … 25 ppm
Temperature 0 … 130°C
Sample conditions    0 … 50°C, max. 0.5 MPa
AquaGuard PR 30
AquaGuard PR 30 The AquaGuard PR 30 measures up to five parameters directly in the water - without the use of expensive pumps and with zero water loss! The portable measuring system consists of an Aqu…
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René Gehri
Water, Beverages & Food, Industrial Processes
Florian Bodmer
Ihr Businesspartner für Industrielle Prozesse, Getränke & Lebensmittel, Verkehr & Umwelt:
Für Wasser kontaktieren Sie unseren Hauptsitz.

Your distribution partner for industrial processes, beverages & food, traffic & environment:
For water please contact our headquarters

Ihr Businesspartner für Getränke & Lebensmittel:
Für Wasser, Industrielle Prozesse, Verkehr & Umwelt kontaktieren Sie unseren Hauptsitz.

Your distribution partner for beverages & food:
For water, industrial processes, traffic & environment please contact our headquarters

Contact headquarters

Felix Joller
Sales Manager ScrubberGuard
Montag–Freitag 08:00–12:00 und 13:30–17:00
Feiertage & Betriebsferien:
Ostern: 07.–10. April 2023, Auffahrt: 18. Mai 2023, Pfingstmontag: 29. Mai 2023, Fronleichnam: 08. Juni 2023, Bundesfeiertag: 01. August 2023, Maria Himmelfahrt: 15. August 2023, Allerheiligen: 01. November 2023, Maria Empfängnis: 08. Dezember 2023, Betriebsferien: 23. Dezember 2023 – 02. Januar 2024
Opening hours:
Monday–Friday 08:00am–12:00pm und 1:30pm–5:00pm
Public & company holidays:
Easter: 07.–10. April 2023, Ascension Day: 18. May 2023, Whit Monday: 29. May 2023, Corpus Christi: 08. June 2023, Federal Holiday: 01. August 2023, Assumption Day: 15. August 2023, All Saints Day: 01. November 2023, Conception of Mary: 08. December 2023, Company holidays: 23. December 2023 – 02. January 2024