Application
Measurement in pure and ultrapure water range:
- Monitoring of ion exchangers
- Reverse osmosis
- Distillation
- Electrodeionization
- WFI (water for injection) in the pharmaceutical industry
Sensors with temperature probes are used in conjunction with conductivity measuring devices that support automatic temperature compensation:
- Liquiline CM442/CM444/CM448 (only CLS16D)
- Liquiline CM42
- Liquiline CM14 (only CLS16D)
- Liquisys CLM223/253 (only CLS16)
- Mycom CLM153 (only CLS16)
The resistivity in MΩ · cm can also be measured using these transmitters.
Your benefits
- High measuring accuracy as cell constant is individually measured
- Hygienic process connections for installation in pipes or flow vessel
- With plug-in head (IP68) or fixed cable (IP67)
- Easy to clean thanks to electropolished surfaces
- Sterilizable up to 150 °C (302 °F)
- Quality certificate stating the individual cell constant
- Certified according to EHEDG, Document 8
- Certificate according to United States Pharmacopeia Class VI Part 87 and 88 (optional)
- Inspection certificate EN 10204 3.1 (optional)
Other advantages of Memosens technology
- Maximum process safety owing to non-contact, inductive signal transmission
- Data security thanks to digital data transmission
- Very easy to use as sensor data saved in the sensor
- Predictive maintenance possible as sensor load data logged in the sensor
Measuring principle
Conductivity of liquids is determined with a measuring
arrangement where two electrodes are located in the
medium. An alternating voltage that causes a current
to flow through the medium is applied at these
electrodes. The electrical resistance, or its reciprocal
value - conductance G - is calculated based on Ohm's
law. The specific conductance κ is determined from the
conductance value using the cell constant k, which
depends on the sensor geometry.
Measuring system
A complete measuring system comprises the following components at least:
- The conductively measuring conductivity sensor CLS16D or CLS16
- A transmitter, e.g. Liquiline M CM42
- A measuring cable, e.g. Memosens data cable CYK10 or CPK9 for analog sensors