COS61/COS61D Dissolved Oxygen Sensor Spare Parts Overview
The COS61 series is an optical dissolved oxygen sensor widely used in industrial processes, and its long-term stability depends on regular replacement of spare parts and proper maintenance. Based on the original manufacturer's spare parts list, this article systematically organizes key spare parts information, including membrane caps, maintenance kits, protective caps, calibration caps, cleaning heads, and zero-point gel, making it convenient for engineering technicians and procurement personnel to quickly consult and select models.
Core Spare Parts List and Specifications
Sensor Membrane Caps and Maintenance Kits
The membrane cap is the core consumable of the optical dissolved oxygen sensor and directly affects measurement accuracy. The original manufacturer provides single membrane caps and complete maintenance kits. It is recommended to replace them regularly according to operating conditions.
| Order Number | Specification Description | Applicable Model |
|---|---|---|
| 51518598 | Sensor membrane cap, 1 piece | COS61, COS61D |
| COV61- | COV61 maintenance kit (including membrane cap, O-ring, and maintenance materials) | COS61/COS61x |
Protective Caps and Calibration Caps
Protective caps are used to protect the sensor when it is not in measurement status, while calibration caps are used for zero-point or span calibration. Protective caps with corresponding aperture or material must be selected for different application scenarios.
- 71495128: Kit COSxx standard protective cap, suitable for conventional environments.
- 71495130: COSxx dissolved oxygen sensor protective cap, designed specifically for fish farm aquaculture applications.
- 71495126: COSxx 8.5 mm aperture cage protective cap, suitable for working conditions containing particles or prone to clogging.
- 51518599: COS31/41/51D/61/71 calibration cap, used for sensor calibration.
Cleaning Heads and Cleaning Units
The cleaning head is used to automatically clean the sensor's optical window, reducing manual maintenance. Multiple specifications are available depending on the installation interface.
- 71110801: Cleaning head COS61/61D 6/8mm, suitable for 6 mm or 8 mm apertures.
- 71110802: Cleaning head COS61/61D 1/4", suitable for 1/4 inch interfaces.
- 71072583: Cleaning unit, 230V air compressor, provides compressed air-driven cleaning.
- 71194623: Output air purification, ensures cleanliness of cleaning air.
Junction Boxes and Zero-Point Gel
Junction boxes are used to extend cables, and zero-point gel is used for sensor zero-point verification and calibration.
- 51500832: Junction box RM, protection rating IP 65, with 2x Pg 13.5, used to extend Memosens/CUS31/41 cables.
- COY8-: Zero-point gel COY8, suitable for zero-point verification, calibration, and adjustment of oxygen and disinfection sensors, compatible with amperometric and optical sensors, available in diameters of 12, 25, and 40 mm, suitable for both laboratory and field use.
Spare Parts Selection and Maintenance Recommendations
Selection Steps
- Confirm the sensor model: COS61, COS61D, or COS61x.
- Select the protective cap according to the application environment: standard, fish farm aquaculture, or cage.
- Determine cleaning requirements: choose a manual cleaning head or automatic cleaning unit.
- Check cable length: if extension is needed, use junction box RM.
- Regular calibration: prepare calibration caps and zero-point gel.
Recommended Maintenance Intervals
| Spare Part | Recommended Replacement/Calibration Interval |
|---|---|
| Membrane cap | Every 6-12 months or according to measurement drift |
| O-ring | Each time the membrane cap is replaced |
| Zero-point gel | Check before each calibration, replace as needed |
| Cleaning head | Check regularly, replace when worn or clogged |
Correct selection of original spare parts and adherence to maintenance intervals can significantly improve the measurement reliability and service life of the COS61 series sensors. For the complete spare parts list or technical support, please refer to the original manufacturer's documentation or contact the supplier.
