Liquisys M CUM223/CUM253 – Turbidity and Solids Content Analyser

Liquisys Turbidity Analyser
Liquisys Turbidity Analyser

Due to the modularity of its design, the Endress+Hauser Liquisys M CUM 223 / 253 analyser can be adapted to a wide range of customer needs. The basic version, which provides simple measuring and alarm signaling functions, can be equipped with additional software and hardware modules to match specific applications. Retrofitting of expansion modules is also possible.

Application Areas

  • Sewage treatment plants, solids content measurement
  • Wastewater treatment
  • Water conditioning and monitoring
  • Surface water: rivers, lakes, oceans
  • Industrial discharges
  • Water recycling

Your Benefits

  • Analyser in field housing or panel mounted housing – Universal use
  • Measuring units: FNU (standard formazine), ppm, % or % SS
  • User-friendly menu structure with plain text in 6 languages facilitates set up
  • 2-line display - simultaneous indication of measured value and temperature
  • Simple calibration using customer-specific samples
  • Directly accessible manual control of the relays
  • Customer-specific alarm configuration for alarm contact and fault current
  • Factory-calibrated sensors with formazine standard and SiO2
  • Automatic self-recognition of the sensors with calibration data loading
  • Automatic cleaning cycle for sensor

Technical Specifications

Measuring Range
(with CUS41 sensor)
0.00 to 9999 FNU
0.00 to 9999 ppm
0.0 to 300.0 g/l
0.0 to 200.0%
Temperature Range -5 to +70°C
Sensor Interface Digital
Transmission Range Adjustable.
min ±0.1 FNU
or ±1 ppm
or ±1 g/l
or ±0.1%
Field Housing Dimensions
(H x W x D)
247 x 170 x 115 mm
(9.7 x 6.7 x 4.5 inches)
Material of Housing
(Panel Mount)
Material of Housing (Field) ABS PC Fr
Material of Front Membrane UV-Resistant Polyester
Power Supply 100/115/230V ac; +10/-15%; 48 to 62 Hz
24V ac/dc; +20/-15%

Use with the Turbimax CUS 41 Sensor.


Page reviewed: 18th December 2017