Xi'an Desun Uniwill Electronic Technology Co., Ltd.
Our Vision Aspire to be a leader in water quality monitoring - our pursuit is to be respected by customers, employees, partners and other companies in the industry. Core Values Rigorous, Efficient,
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DYS-1 Portable Do Meter INTRODUCTION
Features:
￭ Hand-Measured Water Meter with multiple parameters display: DO and temperature.
￭ Signal output:RS-485
￭Support manual salinity compensation, air pressure compensation and manual/auto calibration.
Application:
-Excellent to use in fresh water aqua farm.
-Excellent to use in sea water aqua farm.
Method for measuring dissolved oxygen
Three methods are available for measuring dissolved oxygen concentration. Modern technology involves electrochemical or optical sensors.
1.Dissolved oxygen sensors are connected to instruments used for field sampling and laboratory applications or to data loggers, process monitors or transmitters for deployment measurements and process control.
2.Colorimetric methods provide a basic approximation of the dissolved oxygen concentration in a sample. There are two methods designed for high and low range dissolved oxygen concentrations. These methods are fast and inexpensive for basic projects, but are limited in range and error prone due to the possible presence of other redox agents in the water.
3.The traditional method is the Winkler titration method. While this method has been considered the most accurate and precise for many years, it is also prone to human error and more difficult to perform than other methods.
| Model | DYS-1 |
| DO Range | 0~20mg/L or 0~200% |
| DO Accuracy | 1% |
| Dissolved Oxygen Sensor Drift | <1%per year |
| Sensor Material | SS316 or Titanium alloy |
| Temp. Range | 0~40℃ |
| Temp. Accuracy | ±0.2℃ |
| Measuring Distance | 3m~5m |
| Sensor Cleaning Cycle | According to water condition and measuring frequency |
| Working Temperature | -20℃~50℃ |
| Material Supplied | 3v~6v |
| Power | <0.5w |
| Signal Output | RS-485 |
DAILY MAINTENANCE
This instrument uses a fluorescent dissolved oxygen probe. When cleaning the probe, please use a wet soft cloth or a sponge, gently wipe the fluorescent film on the front end. For some stubborn dirt, some household detergents can be added to the tap water for cleaning.
NOTE:
Don‘t scrape the fluorescent film with hard objects, otherwise scraping the fluorescent film will be discarded.
Maintenance frequency suggests arranging cleaning cycle according to water condition.
The fluorescent film should be replaced once every 2 to 3 years.
When not in use, please put the front end of the sensor in a protective shield.