General
Cell constant	ca. 1 cm⁻¹

The BCP4-BNC is a two-pole conductivity cell from the manufacturer Chauvin Arnoux, specifically designed for precise measurements in laboratory environments. The cell features two platinum electrodes arranged in parallel within a glass body, ensuring a cell constant of approximately 1 cm⁻¹. This construction enables accurate and reliable conductivity measurements in the range of 0.1 µS to 200 mS. The electrode body is made of glass, providing high chemical resistance and excellent cleanability. The BNC connector ensures a secure and standardized connection to compatible measuring instruments. The conductivity cell is not equipped with an integrated temperature sensor, so an external temperature sensor is required in the measuring system for temperature-corrected measurements. Conductivity is highly temperature-dependent, so automatic detection and correction of the measurement temperature is recommended for precise results.

Applications

The BCP4-BNC is particularly suitable for laboratory applications requiring high measurement accuracy at low conductivity levels. Due to its construction with a glass body and platinum electrodes, it is also suitable for viscous samples or liquids containing suspended particles. The conductivity cell is commonly used in water analysis, the chemical industry, or environmental technology, where precise determination of conductivity is important. The cell constant of approximately 1 cm⁻¹ enables broad application in laboratory analytics, especially for samples with medium to high conductivity.

Functions and Equipment in Detail

The conductivity cell consists of two parallel platinum electrodes stabilized and insulated by a glass body. This arrangement ensures a constant cell constant, which is crucial for reproducible measurement results. The platinum electrodes are chemically resistant and corrosion-resistant, extending the service life of the conductivity cell. The BNC connector allows for easy and secure connection to measuring instruments that support this connector. The conductivity cell is designed for operating temperatures from 0 to 80 °C, enabling broad application in various laboratory environments.

Technology Explained Simply

The conductivity of a liquid is determined by the mobility of ions in the solution. The BCP4-BNC measures this value by passing an electric current between the two platinum electrodes. The measured conductivity depends on the cell constant, which is defined by the geometric arrangement of the electrodes. A cell constant of 1 cm⁻¹ means the electrodes are arranged at a distance of 1 cm, enabling standardization of the measurement. Since conductivity is highly dependent on temperature, temperature compensation is necessary to obtain comparable results. This is achieved using an external temperature sensor integrated into the measuring system.

Compatibility and Accessories

The BCP4-BNC is equipped with a BNC connector, compatible with a wide range of conductivity measuring instruments, especially those used in laboratory environments. Various connector variants are available to adapt the conductivity cell to different devices. The use of an external temperature sensor enables automatic correction of the measured conductivity to a reference temperature, which is important for precise analyses.

Mounting and Installation

The BCP4-BNC is mounted by immersing the conductivity cell into the liquid to be measured. The glass body construction allows for easy cleaning and maintenance. The BNC connection is directly attached to the measuring instrument. It is important that the conductivity cell is fully immersed in the sample to ensure a representative measurement. After use, the conductivity cell should be thoroughly cleaned and dried to ensure a long service life.

Advantages in Operation

The BCP4-BNC offers high measurement accuracy, especially at low conductivity levels, making it suitable for demanding laboratory analyses. The use of platinum as electrode material ensures high corrosion resistance and long service life. The glass construction enables easy cleaning and is chemically resistant. The BNC connector ensures a secure and standardized connection to measuring instruments. The cell constant of 1 cm⁻¹ enables broad application in laboratory environments and easy comparability of results with other conductivity cells of the same constant.