COS51D Dissolved Oxygen Sensor Spare Parts Overview
COS51D is a commonly used sensor for industrial online dissolved oxygen measurement, and its spare parts and maintenance consumables directly affect measurement accuracy and service life. This article compiles the ordering numbers, specifications, and uses of spare parts for COS51D and the same series of sensors, making it convenient for engineering technicians and procurement personnel to quickly consult and select models.
Spare Parts List and Ordering Numbers
The table below lists COS51D-related spare parts and supporting maintenance materials, including protective caps, cleaning heads, calibration caps, junction boxes, etc.
| Ordering Number | Specification/Description |
|---|---|
| 71194623 | Output air purification |
| 71495128 | Kit COSxx standard protective cap |
| 71495130 | COSxx dissolved oxygen sensor protective cap, suitable for fish farm aquaculture applications |
| COV45- | COS41/COS51x maintenance kit COV45 (including membrane cap, O-rings and other maintenance materials) |
| 71495126 | COSxx 8.5 mm aperture cage-type dissolved oxygen sensor protective cap |
| 71110801 | Cleaning head COS61/61D 6/8mm |
| 71110802 | Cleaning head COS61/61D 1/4" |
| 71072583 | Cleaning unit, 230V air compressor |
| 51518599 | COS31/41/51D/61/71 calibration cap |
| 51500832 | Junction box RM (for extending Memosens/CUS31/41 cables, protection class IP65, with 2x Pg 13.5) |
| COY8- | Zero-point gel COY8 (for zero-point verification, calibration and adjustment of oxygen and disinfection sensors; suitable for amperometric and optical sensors; diameters 12, 25, 40 mm; laboratory and field applications) |
Detailed Explanation of Key Spare Parts
Protective Caps and Maintenance Kits
Protective caps are used to protect the dissolved oxygen sensor membrane from mechanical damage and contamination. The standard protective cap (ordering number 71495128) is suitable for conventional applications; the protective cap dedicated to fish farm aquaculture (ordering number 71495130) is optimized for aquaculture environments; the cage-type protective cap (ordering number 71495126) has an 8.5 mm aperture and is suitable for working conditions with high flow velocity or particulate matter.
The maintenance kit COV45 (ordering number COV45-) includes a membrane cap, O-rings and other maintenance materials, is suitable for COS41/COS51x sensors, and is the recommended choice for regular maintenance.
Cleaning and Calibration Accessories
The cleaning head (ordering number 71110801/71110802) is used for automatic cleaning of COS61/61D sensors, respectively adapting to 6/8mm and 1/4" pipelines. The cleaning unit (ordering number 71072583) is equipped with a 230V air compressor and can achieve automatic cleaning.
The calibration cap (ordering number 51518599) is suitable for the COS31/41/51D/61/71 series and is used for sensor calibration. The zero-point gel COY8 (ordering number COY8-) is used for zero-point verification and calibration of oxygen and disinfection sensors, supports amperometric and optical sensors, and is available in three diameters: 12, 25, and 40 mm, suitable for laboratory and field use.
Junction Box and Cable Extension
The junction box RM (ordering number 51500832) is used to extend Memosens/CUS31/41 cables, has protection class IP65, and is equipped with 2x Pg 13.5 cable entries, suitable for installation scenarios requiring long-distance transmission.
Maintenance Recommendations and Selection Points
To ensure long-term stable operation of the COS51D dissolved oxygen sensor, it is recommended to regularly check the condition of the protective cap and membrane, and replace the maintenance kit as needed. In special applications such as fish farm aquaculture, dedicated protective caps should be selected. Original calibration caps and zero-point gel should be used for calibration and zero-point verification to ensure measurement accuracy.
- Regularly replace the membrane cap and O-rings; maintenance every 3-6 months is recommended.
- Cleaning heads and cleaning units can reduce the frequency of manual maintenance and are suitable for harsh working conditions.
- The junction box RM can extend cables, facilitating long-distance installation of the transmitter.