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Turbimax CUS52D


Turbimax CUS52D is a sensor for measuring turbidity and low solids content in

drinking water and process water applications.

• Turbidity measurement at all stages of the water treatment process

• Final turbidity measurement in outlet of waterworks

• Turbidity measurement in inlet of waterworks

• Turbidity measurement for filter monitoring and filter backwashing

• Turbidity measurement in drinking water networks

• Turbidity measurement in saline media (plastic sensor only)

Your benefits

• Turbidity measurement in accordance with ISO 7027

• The hygienic design with the 2" clamp means it can be mounted directly in pipes

and fits into CUA252 (PE 100) and CUA262 (stainless steel) flow assemblies

• Immersion version can be installed in open channels and basins

• Can be used at high temperatures and high pressures

• Standardized communication (Memosens technology) enables "plug and play"

• Intelligent sensor - all characteristics and calibration values are stored in the


• Customer calibrations with 1 to 6 points can be performed in the lab or at place of


• Completely safe, as the optical source requires little power to operate



Measuring range



0.000 to 4000 FNU

Display range up to 9999 FNU




0 to 600 mg/l

Display range up to 3 g/l





0 to 2 200 mg/l

Display range up to 10 g/l




–20 to 85 °C (–4 to 185 °F)


Electrical connection

The following connection options are available:

• via M12 connector (version: fixed cable, M12 connector)

• via sensor cable to the plug-in terminals of a sensor input on the transmitter (version: fixed cable, end sleeves)

Reference operating


20 °C (68 °F), 1013 hPa (15 psi)

Maximum measured error



2 % of the measured value or 0.1 FNU (the greater value applies in each case).

Reference: measured value in recommended operational range, factory calibration



< 5% of measured value or 1 % of the end of measuring range (the greater value applies

in each case). Applies for sensors that are calibrated to the particular measuring range under analysis.



< 0.5 % of the measured value

Long-term reliability


Working on the basis of electronic controls, the sensor is largely free of drifts.

Response time

> 1 second, adjustable

Process temperature range


Stainless steel sensor

–20 to 85 °C (–4 to 185 °F)

Plastic sensor

–20 to 60 °C (–4 to 140 °F)

Process pressure range

Stainless steel sensor

0.5 to 10 bar (7.3 to 145 psi) (abs.)

Plastic sensor

0.5 to 6 bar (7.3 to 87 psi)

Flow limit

Minimum flow

No minimum flow required.

Ambient temperature range

–20 to 60 °C (–4 to 140 °F)

Storage temperature

–20 to 70 °C (–4 to 158 °F)

Degree of protection

IP 68 (1.8 m (5.91 ft) water column over 20 days, 1 mol/l KCl)


compatibility (EMC)

Interference emission and interference immunity as per

• EN 61326-1:2013

• EN 61326-2-3:2013

• NAMUR NE21: 2012



  • Datasheet
  • Operation Instruction