CPS91E pH Measurement System Spare Parts Overview
CPS91E is a commonly used pH measurement system in industrial processes, and its long-term stability depends on correct spare parts selection and regular maintenance. This article compiles the core spare parts list for this system, covering sensors, protection caps, electrolyte, and standard buffer solutions, for reference by engineering technicians and procurement personnel.
Spare Parts List and Specifications
Sensors and Accessories
| Order Number | Specification | Description |
|---|---|---|
| 71038228 | Sensor | Used to assign sensors to measurement loops, includes sensor clips with 100 printable labels |
| 71538217 | CPSxx electrode protection cap | 20 pH sensor protection caps, suitable for CPSxx series |
Electrolyte and Standard Solutions
| Order Number | Specification | Description |
|---|---|---|
| CPY4- | KCl electrolyte CPY4 | For liquid-filled electrodes, ensures stable reference system |
| CPY20- | pH standard solution CPY20 | Traceable to PTB primary reference materials and NIST standard reference materials, with calibration certificate |
Selection and Ordering Guide
Reasonable spare parts selection based on the number of measurement loops and maintenance cycles can reduce downtime. The following are key selection points:
- Sensor: One sensor is required per measurement loop, and 1-2 spare sensors are recommended.
- Electrode protection cap: Used to protect idle electrodes and prevent the sensitive membrane from drying out; recommended to keep in stock.
- KCl electrolyte: Regularly replenish liquid-filled electrodes; replacement every 3-6 months is recommended.
- pH standard solution: Used for calibration; purchase according to calibration frequency and ensure use within the validity period.
Maintenance and Calibration Steps
- Shut down the measurement loop and remove the pH sensor.
- Inspect the electrode sensitive membrane; if contaminated, clean with a dedicated cleaning solution.
- Replenish KCl electrolyte to the specified level.
- Perform two-point or three-point calibration using pH standard solutions.
- After calibration, reinstall the sensor into the measurement loop and verify the reading.
Frequently Asked Questions
How to determine the spare part order number?
Please order directly according to the equipment model and required accessories, referring to the order numbers in the table above. If you have any questions, contact the supplier with the specific model.
What optional specifications are available for pH standard solutions?
The CPY20 series offers various specifications, such as 01, 02, 10, 50, 75, 99, etc., corresponding to different pH values, which can be selected according to the calibration points.
Summary
Correct spare parts selection and regular maintenance are key to ensuring the accuracy of the CPS91E pH measurement system. Users are advised to develop a maintenance plan based on actual operating conditions and stock commonly used spare parts to reduce the risk of unexpected downtime.