1. Introduction
This product uses the principle of fluorescence method to monitor dissolved oxygen data. Compared with the traditional electrode method, it has the characteristics of accurate and stable monitoring data, strong resistance to environmental interference, fast measurement speed, and long service service. In addition, the fluorescent film of this detector breaks the foreign monopoly technology and is a hard fluorescent film developed domestically. It also has the characteristics of scratch resistance and not easy to fall off.
2. Features
- The fluorescent membrane of the dissolved oxygen probe is replaceable.
- One-touch measurement, press the measurement button to observe the data at any time.
- Night backlight, clear and visible at night.
- Long standby time, the device automatically shuts down after the test is completed.
- The display screen uses an ink screen, the observation experience of a paper book, eye protection without glare, strong light is clearly visible
3. Technical Parameters
| Measuring principle | Fluorescence method |
| Range | 0-20mg/L |
| Resolution | 0.01mg/L,0.1℃ |
| Accuracy | ±3% |
| Repeatability | ±0.3mg/L |
| Response time (T90)1 | <120s |
| Temperature accuracy | ±0.3℃ |
| Temperature compensation | Automatic temperature compensation |
| Working conditions | 0-50℃ |
| Calibration method | One-point calibration |
| Life of fluorescent film head | >1 year |
4. Product Installation and Display Instructions
5. Precautions
- Avoid exposing the sensor membrane head to the sun during storage.
- Avoid applying any mechanical stress (pressure, scratches, etc.) directly to the fluorescent membrane during use.
- Do not touch the fluorescent membrane directly with your hands, and do not scratch it with hard objects such as nails.
- It is recommended to replace the fluorescent cap of the sensor every 2 to 3 years.
- Check the sensor housing regularly for damage due to corrosion or other reasons.
- After a period of use, the probe may be contaminated by algae and needs to be cleaned regularly. Use a damp, soft cloth or a sponge with water to gently wipe the front fluorescent membrane. For some stubborn dirt, add some household detergent to the water for cleaning.
- When not in use, please place the front end of the sensor in a protective cover with a damp sponge to keep the sensor moist for a long time so that the probe can still be in good condition when it is used next time.
- If the sensor is in a dry state for a long time, the measurement results will drift, resulting in inaccurate measurement data. If it is in a dry state, it needs to be soaked in water for more than 24-48 hours before continuing to work.
6. Support and Services:
Customer Support
Technical Assistance: Our dedicated support team is available to assist with installation, configuration, and trouble. You can reach us via phone, email, or live chat.
Documentation: Comprehensive user manuals, installation guides, and technical specifications are available on our website for easy reference.
Warranty and Returns
Warranty Coverage: Our sensors come with a standard one-year warranty that covers defects in materials and workmanship. Extended warranty options are also available.
Return Policy: If you’re not satisfied with your purchase, you can return the sensor within 30 days for a full refund, provided it’s in original condition.
Software Support
ModBus-RTU Configuration: Support for configuring the sensor through ModBus-RTU protocol, including detailed guides and trouble tips.
For any inquiries or assistance, please do not hesitate to contact our support team. We're here to help you maximize the potential of your Dual Probe Ultrasonic Sensor!
Appendix:KWS-670A Portable Dissolved Oxygen Analyzer.pdf
