CPS71E pH Electrode Spare Parts Overview
The CPS71E is a digital pH electrode introduced by Endress+Hauser, widely used in the chemical, pharmaceutical, and water treatment industries. To ensure measurement accuracy and electrode lifespan, regular replacement of spare parts is essential. This article compiles a list of commonly used spare parts for the CPS71E, including sensors, protective caps, electrolytes, and standard buffer solutions, along with order numbers and selection codes for quick reference by engineers and procurement personnel.
Spare Parts List and Ordering Information
The following table lists the main spare parts for the CPS71E electrode along with their order numbers and specifications for selection reference.
| Order Number | Spare Part Name | Specification |
|---|---|---|
| 71038228 | Sensor | Used to assign sensors to measurement loops, includes sensor clips with 100 printable labels |
| 71538217 | CPSxx electrode protective cap | 20 pH sensor protective caps, suitable for the CPSxx series |
| CPY4- | KCl electrolyte CPY4 | For liquid-filled electrodes, ensures reference system stability |
| CPY20- | pH buffer solution CPY20 | pH standard buffer solution, traceable to PTB primary standard substances and NIST standard reference materials, with calibration certificate |
Selection Code Description
CPY4 and CPY20 series spare parts require suffix codes based on the specific model. Below are common selection codes and their meanings; please combine them according to actual requirements.
CPY4- KCl Electrolyte Selection Codes
- 1: 1 bottle (100ml)
- 2: 2 bottles (200ml)
- 3: 3 bottles (300ml)
- 4: 4 bottles (400ml)
- 5: 5 bottles (500ml)
- 6: 6 bottles (600ml)
- 7: 7 bottles (700ml)
CPY20- pH Buffer Solution Selection Codes
CPY20 buffer solution selection consists of two parts: the first letter indicates the pH value, and the second letter indicates the packaging specification.
- pH value codes:
- A: pH 4.00
- C: pH 7.00
- E: pH 9.00
- G: pH 10.00
- I: pH 12.00
- K: pH 2.00
- M: pH 1.00
- Y: Other custom pH values
- Packaging specification codes:
- 01: 1 bottle (500ml)
- 02: 2 bottles (1000ml)
- 10: 10 bottles (5000ml)
- 50: 50 bottles (25000ml)
- 75: 75 bottles (37500ml)
- 99: Special packaging
In addition, some buffer solutions also provide additional codes such as A, B, Y to identify certificate types or special requirements. Please refer to the product catalog for details.
Selection and Procurement Recommendations
To ensure long-term stable operation of the CPS71E electrode, it is recommended to regularly replace the electrolyte and buffer solutions based on measurement frequency and environmental conditions. When purchasing, please verify the order number and selection code to avoid mismatches.
- Routine maintenance: Check the electrolyte level every 1-2 weeks and replenish in time.
- Calibration cycle: It is recommended to calibrate once a week using CPY20 series buffer solutions.
- Protective cap: Always install the protective cap when not measuring to prevent the electrode from drying out.
For more detailed selection guidance, please contact Endress+Hauser technical support or an authorized distributor.