E+H Condumax CLS21 Industrial Conductive Conductivity Sensor Probe

High-Precision Conductive Conductivity Measurement for Industrial Processes
In demanding process environments, accurate conductivity monitoring is crucial for maintaining water quality, process efficiency, and equipment protection. Our Conductive Conductivity Sensor is engineered as a direct, cost-effective replacement and high-performance equivalent to leading European process sensors .

Utilizing an optimized 2-electrode coaxial graphite design, the sensor minimizes polarization effects while ensuring consistent performance across medium-to-high conductivity applications. The combination of Polyethersulfone (PES) shaft material and high-purity graphite electrodes provides superior resistance against corrosive media and thermal shock.
Precision-manufactured electrode gap guarantees high repeatability and precise cell constant (k=1.0 cm⁻¹), backed by individual factory calibration certificates.

Built to withstand demanding inline conditions—rated for pressures up to 16 bar at 20°C and process temperatures up to 135°C (275°F).

Features built-in Pt100 (or optional NTC/Pt1000) RTD sensors for automatic temperature compensation (ATC), eliminating measurement drift caused by temperature fluctuations.

Available with standard process connections (G1″, NPT, DN25/DN40 flanges) and robust IP65/IP67 connector/cable options for simple retrofitting and installation into pipe systems or flow chambers.

Frequently Asked Questions

Q1: What is the significance of the cell constant (k=1.0 cm⁻¹) for this conductivity sensor?

A: The cell constant k defines the geometric layout of the electrodes. A cell constant of k=1.0is ideal for medium-to-high conductivity ranges (10 µS/cm to 20 mS/cm), making it suitable for drinking water, industrial process water, and wastewater applications.

Q2: Can this conductivity sensor be directly integrated with existing transmitters/controllers?

A: Yes. Our sensors output standard analog signals and are built with standard Pt100/Pt1000 RTD temperature elements. They are compatible with most standard conductivity transmitters and liquid analysis controllers on the market.

Q3: How do I clean and maintain the graphite electrodes?

A: Graphite electrodes are low-maintenance and resistant to fouling. If deposits accumulate, clean the sensor shaft with a soft brush and warm water mixed with a mild dishwashing detergent or diluted hydrochloric acid (1–3%) for mineral scale, followed by a distilled water rinse.

المواصفات الفنية

مواصفات المنتج التي تمت مراجعتها

Measurement Principle	Conductivity
Applications	Water, wastewater, process, phase separation, industrial water.
Features	Two-electrode system; suitable for medium conductivity ranges.
Measurement Range	k=1: 10.0 µS/cm...20.0 mS/cm
Measurement Principle	Conductive conductivity sensor with graphite electrodes; suitable for medium conductivity ranges.
Design	Two-electrode system; electrodes mounted side-by-side.
Materials	Sensor body: PES Electrodes: Graphite
Dimensions	Diameter: 24 mm (0.936 inch) Length: 61 mm (2.37 inch)
Process Temperature	Max. 135°C (275°F)
Process Pressure	Max. 16 bar at 20°C (Max. 232 psi at 68°F)
Temperature Sensor	Optional Pt100 or PTC temperature sensor
Explosion Protection	ATEX
Connection	Process connection: DN25, DN40, G1"; Cable: 4-pin connector with Pg9 thread or fixed cable.
Ingress Protection	IP65 (connector), IP67 (fixed cable)

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