Fluorescence quenching is part of the DSD-160W fluorescent method for measuring dissolved oxygen. It determines oxygen concentration by assessing the inverse correlation between the duration required for red light to stimulate and the concentration of oxygen molecules. This makes the measurement more stable and useful.
The device operates best in rough water and is useful for aquaculture, keeping an eye on the environment, and checking the quality of industrial water. The illuminating film won’t scratch, won’t grow bacteria, and won’t be affected by other things. It also makes it easy and safe to provide data, thus it is a whole solution for monitoring dissolved oxygen online.
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Parameters
| Category | Specifications |
|---|---|
| Measurement Principle | Fluorescence quenching method |
| Measurement Range | Dissolved Oxygen: 0-20 mg/L or 0-200% saturation; Temperature: 0-50 ℃ |
| Measurement Accuracy | Dissolved Oxygen: ±0.1-0.3 mg/L; Temperature: <0.3 ℃ |
| Resolution | 0.01 mg/L |
| Response Time | <120 s |
| Power Supply | 9V-24VDC (12V recommended) |
| Output Signal | RS485 (Modbus RTU protocol) |
| Operating Temperature | 0-40 ℃ |
| Storage Temperature | -5-60 ℃ |
| Physical Parameters | Dimensions: Φ32mm×170mm (adjustable); Thread Interface: G3/4; Housing Material: ABS (titanium alloy customizable) |
| Cable Connection | Red: Power (+); Black: GND; White: RS485-A; Yellow: RS485-B |
| Modbus Configuration | Baud Rate: 9600; Data Bits: 8; Parity: None; Stop Bit: 1 |
Core Highlights
- Accurate and stable, strong anti-interference: Fluorescence measurement does not rely on chemical reagents, avoiding electrode contamination interference, with measurement accuracy of ± 0.1-0.3mg/L, temperature error<0.3 ℃, and high data reliability.
- Fluorescent films are good for hard water bodies because they are antibacterial and scratch-resistant, which keeps algae and other contaminants from sticking to them. They are made for situations where the water quality is hard to understand, such aquaculture and industrial waste.
- It supports RS485 serial connection and the Modbus protocol, works with most industrial control systems, and can read data and set parameters from a distance. It is also easy to talk to.
- It’s easy to install and maintain. It has a G3/4 standard threaded interface and a clear cable definition. You only need to wipe the fluorescent film once a day, and the fluorescent cap needs to be replaced once a year. The cost of maintenance is minimal.
Featured Applications
- Monitoring the amount of dissolved oxygen in fish ponds, shrimp ponds, and other bodies of water online is done to keep the aquaculture environment safe and protect aquatic life.
- Watching over the environment: Making sure the quality of surface water and sewage runoff outlet water meets the requirements for watching over the environment.
- In industrial production, keeping an eye on the amount of oxygen dissolved in process water and cold water that is circulated can help make things better.
- In other cases, measuring dissolved oxygen is needed to do things like check the quality of water in a swimming pool or lab, among other things.
Daily maintenance and precautions
Maintenance points
- When installing, choose matching protective sleeves or cable connectors to ensure that the threaded interface is tightly sealed and avoid water leakage.
- The connection between the electrode wire and the electrode is not waterproof, and waterproof treatment should be done to avoid moisture affecting signal transmission.
- When stripping the wire, it is necessary to peel off the metal mesh layer, thoroughly remove the conductive black skin on the outer layer of the transparent central axis, and there should be no additional contacts in the middle.
- Avoid electrode contact with sharp objects to prevent membrane damage; The installation location should be away from strong magnetic fields and mixers to ensure stable measurement.
- Before the first use, it is necessary to connect polarization with the host and complete zero and slope calibration according to the host calibration process to improve measurement accuracy.
Safety precautions
- Every three to six months, wash the surface with clean water to get rid of anything stuck on it. This keeps the membrane’s water moving.
- Clean, seal, and store the electrode somewhere dry if you’re not going to use it for a while. The barrier won’t break down because of this.
- It is important to check the cable link and make any changes that are needed to make sure the signal gets through if the test data changes.
- Heavy acid or alkaline liquids can damage electrodes over time, so don’t leave them in them for too long.
Technical Support
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The DSD-160W fluorescent dissolved oxygen probe works well, doesn’t pick up on other signals, and is easy to use, which makes it great for tracking. It lowers maintenance costs and operational problems by providing precise and ongoing information about enormous bodies of aquaculture water or complex industrial water quality.
We offer a lot of technical help and service after the sale. Please get in touch with us if you need help picking out, setting up, starting, or using a product. You can trust DSD-160W to keep an eye on the health of your water!
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