CAS40D Spare Parts Overview
CAS40Dis an ion-selective electrode system used for online water quality analysis, widely applied in scenarios such as wastewater treatment and drinking water monitoring. To ensure measurement accuracy and system stability, regular replacement of spare parts is essential. This article compiles the full range of CAS40D spare parts, including electrodes, membranes, maintenance kits, and cleaning units, for quick reference by engineering technicians and procurement personnel.
Electrodes and Membrane Spare Parts
Ion-Selective Electrodes
When electrode response becomes sluggish or calibration fails, the corresponding ion electrode needs to be replaced. The following are compatible replacement electrodes for the CAS40D:
- 71109938: Ammonia nitrogen electrode, ammonium ion selective, suitable for online ammonia nitrogen monitoring.
- 71109937: Nitrate electrode, nitrate selective, used for nitrate nitrogen measurement.
- 71109936: Potassium ion electrode, potassium selective, suitable for potassium ion detection.
- 71109939: Chloride ion electrode, chloride ion selective, used for chloride ion concentration analysis.
- 71123812: Reference electrode, provides a stable reference potential for all ion electrodes.
Membranes and Electrolyte Kits
The membrane is a key consumable for ion electrodes and directly affects measurement accuracy. It is recommended to replace it regularly according to the measurement parameters:
| Order Number | Specification | Applicable Ion |
|---|---|---|
| 71072574 | Two membrane caps, electrolyte | Ammonia nitrogen |
| 71072575 | Two membrane caps, electrolyte | Nitrate nitrogen |
| 71072576 | Two membrane caps, electrolyte | Potassium salt |
| 71072577 | One membrane cap, electrolyte | Chloride ion |
Note: When replacing the membrane, the electrolyte must also be replaced, and ensure the membrane cap is properly installed to avoid residual air bubbles.
Structural Parts and Maintenance Spare Parts
Although structural parts such as electrode sleeves and gaskets are small, they affect sealing performance and electrode lifespan. The following are commonly used spare parts:
- 71130354: CAS40D electrode protective cover, prevents mechanical damage to the electrode.
- 71130358: CAS40D electrode partial cable, used for signal transmission.
- 71130359: CAS40D electrode air jet, used for cleaning the electrode surface.
- 71085727: Chloride ion maintenance kit, includes accessories required for maintenance.
- 71260473: Electrode sleeve, protects the electrode and secures installation.
- 71260474: Gasket, ensures sealing and prevents leakage.
- 71260477: Electrode sleeve + tube, integrated installation assembly.
Cleaning and Auxiliary Units
The automatic cleaning unit can extend the electrode maintenance cycle, especially suitable for operating conditions prone to scaling. The following are related spare parts:
- 71072583: Cleaning unit, 230V air compressor, provides compressed air purging.
- 71194623: Output air purification, ensures clean purging air.
Compatible Sensors and Standard Solutions
The CAS40D system is often used in combination with pH sensors, temperature sensors, and standard solutions. The following are common compatible parts:
| Model | Description | Key Parameters |
|---|---|---|
| Orbisint CPS11 | pH combination electrode | Diaphragm: PTFE; Reference: gel; Application: standard process; Conductivity: ≥50uS/cm |
| Temperatur Sensor CTS1 | Temperature sensor | Pt100, similar to pH electrode; Diameter: 12mm; Operating range: -15...+150°C / 0...14pH |
| CAY40 | Standard solution | Suitable for ISEmax CAS40/40D |
Selection Tip: The pH electrode CPS11 is suitable for standard processes, the temperature sensor CTS1 can be integrated into the pH measurement loop, and the standard solution CAY40 is used for calibrating ion electrodes.
Spare Parts Selection and Ordering Recommendations
To ensure long-term stable operation of the CAS40D system, it is recommended to develop a spare parts plan based on measurement parameters and operating conditions:
- Confirm the type of ion to be measured and select the corresponding electrode and membrane.
- Regularly inspect sealing parts such as electrode sleeves and gaskets to prevent leakage.
- If the water quality is prone to scaling, it is recommended to configure a cleaning unit and air purification components.
- The calibration standard solution CAY40 should be kept in stock, and attention should be paid to its expiration date.
- When ordering, please verify the order number and specifications to avoid incorrect purchases.
The above spare parts are all suitable for the CAS40D series. For specific compatibility, please refer to the official technical documentation. Correct selection and timely replacement can significantly improve measurement reliability and reduce downtime.