
Specs at a glance
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Measurement range
2µS/cm to 2000 mS/cm
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Process temperature
PEEK: max. 125°C (max. 260 °F)
PFA: max. 110°C (max. 230 °F) -
Process pressure
PEEK: max. 21 bar (max. 304.5 psi)
PFA: max. 17 bar (max. 246.5 psi)
Field of application
Indumax CLS50D is a digital inductive conductivity sensor for standard, hazardous and high-temperature applications. Benefit from high chemical resistance and long durability thanks to robust materials (PFA, PEEK). Moreover, it is insensitive to soiling and performs reliable and repeatable even in harsh and aggressive media. Thanks to Memosens, CLS50D combines maximum process and data integrity with simple operation. It resists corrosion and moisture and facilitates predictive maintenance.
Indumax CLS50D measures toroidal conductivity in:
Chemicals:
- Concentration measurement of acids and bases
- Quality monitoring of chemical products in tanks and pipesFood & Beverages:
- Phase separation of product/product mixtures in pipe systemsLife Sciences:
- Phase separation of product/product mixtures in pipe systemsWastewater industry:
- Inlet monitoring
With its international explosion protection approvals, such as ATEX, FM, CSA, NEPSI, it is suitable for hazardous areas.
Benefits
High durability and chemical resistance even under harsh conditions
Dirt-repellent materials and large sensor opening avoid soiling
Wide temperature range and highly resistant materials make the sensor suitable for virtual any application
Reliable values thanks to active connection monitoring
Easy wiring over long distances without impact on the measurement accuracy
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Logging of sensor-specific data for easy traceability
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Approved for hazardous area use
Videos
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The conductivity of a liquid can be measured using the conductive or toroidal measuring principles. This video shows what it is about and how these measuring principles work.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Inductive
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Application
Chemical industry, process
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Characteristic
Analog or digital, inductive conductivity sensor for standard, Ex and
high-temperature applications -
Measurement range
2µS/cm to 2000 mS/cm
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Measuring principle
Inductive conductivity measurement
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Design
No direct contact with the media because of the sensor coating made of highly resistant material
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Material
PEEK or PFA
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Dimension
Electrode:
Outside diameter: 47.5 mm (1.87 inch)
Inside diameter: 15 mm (0.59 inch)
Inside diameter (PEEK version): 15.5 mm (0.61 inch) -
Process temperature
PEEK: max. 125°C (max. 260 °F)
PFA: max. 110°C (max. 230 °F) -
Process pressure
PEEK: max. 21 bar (max. 304.5 psi)
PFA: max. 17 bar (max. 246.5 psi) -
Temperature sensor
Integrated Pt1000
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Ex certification
ATEX, IECEx, NEPSI, FM, CSA, TIIS, EAC
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Connection
Process connection: NPT1", DN50, AINSI, JIScable: fixed cable connection
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Ingres protection
IP 68 / NEMA type 6
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Additional certifications
Calibration certification of the cell constant
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