Equipped with a highly sensitive electrode and a dual salt bridge reference design, the SUCH water quality potassium ion sensor delivers rapid response times, providing 95% measurement feedback within 30 seconds. With a measurement range of 0.7 to 98,000 ppm and a resolution of 0.01 ppm, the potassium ion sensor features built-in temperature compensation to ensure accurate data across varying environments.
Feature

- Ultra-wide potassium ion detection range of 0.7 to 98,000 ppm, meeting diverse application needs for drinking water, industrial water, and laboratory settingsāprofessional and reliable.
- The water quality sensor supports automatic/manual temperature compensation, maintaining stable performance in environments ranging from -10°C to 110°C.
- Equipped with an RS485 signal output interface supporting MODBUS-RTU protocol, it facilitates seamless integration with PLCs or monitoring systems.
Potassium ion sensors are widely used in water treatment, food processing, biological sample analysis, and environmental monitoring.
Dimension (unit: mm)

Maintenance and Care Guidelines
Properly Clean Electrode Surfaces: After prolonged online operation, water quality sensors may develop scale or biofilm deposits on electrode surfaces, impairing measurement sensitivity. Regularly rinse electrodes gently with deionized water. For stubborn deposits, use designated diluted standard solutions for treatment. Avoid scraping the membrane surface with hard objects to prevent damage to the sensing layer.
Proper Storage and Soaking: For short-term deactivation, store potassium sensors in potassium ion standard solutions of appropriate concentration to maintain electrode activity. For long-term storage, dry preservation is recommended with dust protection to prevent performance degradation from prolonged air exposure.
Regular Calibration for Accuracy: To ensure long-term measurement stability, perform periodic calibration based on usage frequency. Particularly in environments with significant water quality fluctuations, closely monitor slope and repeatability changes, promptly correcting deviations.
Consider Operating Conditions and Installation Environment: During use, control pH range and temperature conditions. Avoid operation under overpressure or in environments with strong interfering ions. Regularly inspect cable and interface seals to ensure the sensor operates reliably and safely under stable conditions over extended periods.
Wiring Diagram
| Item |
Color |
Function Description |
| Data Transmission |
Yellow Wire |
RS485 Communication T/R+ (A) |
| Data Transmission |
White Wire |
RS485 Communication T/Rā (B) |
| Power Supply |
Red Wire |
DC Power Supply Positive |
| Power Supply |
Black Wire |
DC Power Supply Ground |