Products Description
The dissolved oxygen meter measures the amount of oxygen dissolved in an aqueous solution. Oxygen is dissolved in water through the surrounding air, air movement and photosynthesis. It can be used to monitor processes where oxygen content affects reaction rate, process efficiency or the environment: such as aquaculture, biological reactions, environmental testing (lakes, streams, oceans), water/wastewater treatment, and wine production.
Dissolved oxygen is consumed in water through respiration and decomposition, and is mainly supplemented by air and photosynthesis. The oxygen content in water depends mainly on temperature. The oxygen concentration in warm water is lower than that in cold water. However, too high a dissolved oxygen content is harmful to plants and animals.
The oxygen content in water can fully show the degree of self-purification of water. For biological treatment plants using activated sludge, it is very important to understand the oxygen content in the aeration tank. The increase in dissolved oxygen in sewage will promote biological activities other than anaerobic microorganisms, thereby removing volatile substances and ions that are easily naturally oxidized, so that sewage can be purified.
Product Features
● Suitable for dissolved oxygen analysis and control applications in fermentation, pharmaceutical and industrial processes.
● Galvanic cell measurement system and polarographic measurement system, users can freely set the application.
● NEMA4X, IP65 protection level: all-weather waterproof and airproof.
● Temperature/salinity/atmospheric pressure compensation function.
● Pipeline pressure/liquid level depth compensation function.
● Secondary password protection: prevent unauthorized changes to settings.
● Multi-line display LCD screen; high-brightness LED orange backlight that can be freely switched.
● Control mode: (LIT) switch quantity control.
● Two-way relay contact switch: high and low point control and hysteresis band width can be independently set.
● Third-way cleaning/alarm function relay: users can set the cleaning frequency and time by themselves.
● Multiple current output options: 0/4-20mA, output range can be set by themselves.
● RS-485 output.
Product Specification
| Measuring range | 0-20ppm |
| Accuracy | ±0.01ppm |
| Resolution | 0.01ppm |
| Stability | ≤0.02ppm/24 hours |
| Temperature compensation | 0-100℃ manual/automatic (PT1000/NTC10K) |
| Signal output | 4-20mA isolated protection output, corresponding to the measured parameter value and temperature, maximum load 500Ω |
| Alarm output | Two groups can be arbitrarily corresponding to high and low point alarms (3A/250VAC), normally open contact relays, and one group is self-cleaning |
| Power supply | AC220V or DC24V |
| Power consumption | ≤5W |
| Environmental conditions | Temperature 0-60℃; Humidity ≤85%RH |
Product Dimensions
Product Features
● Suitable for dissolved oxygen analysis and control applications in fermentation, pharmaceutical and industrial processes.
● Galvanic cell measurement system and polarographic measurement system, users can freely set the application.
● NEMA4X, IP65 protection level: all-weather waterproof and airproof.
● Temperature/salinity/atmospheric pressure compensation function.
● Pipeline pressure/liquid level depth compensation function.
● Secondary password protection: prevent unauthorized changes to settings.
● Multi-line display LCD screen; high-brightness LED orange backlight that can be freely switched.
● Control mode: (LIT) switch quantity control.
● Two-way relay contact switch: high and low point control and hysteresis band width can be independently set.
● Third-way cleaning/alarm function relay: users can set the cleaning frequency and time by themselves.
● Multiple current output options: 0/4-20mA, output range can be set by themselves.
● RS-485 output.
Product Dimensions
Product Specification
| Measuring range | 0-20ppm |
| Accuracy | ±0.01ppm |
| Resolution | 0.01ppm |
| Stability | ≤0.02ppm/24 hours |
| Temperature compensation | 0-100℃ manual/automatic (PT1000/NTC10K) |
| Signal output | 4-20mA isolated protection output, corresponding to the measured parameter value and temperature, maximum load 500Ω |
| Alarm output | Two groups can be arbitrarily corresponding to high and low point alarms (3A/250VAC), normally open contact relays, and one group is self-cleaning |
| Power supply | AC220V or DC24V |
| Power consumption | ≤5W |
| Environmental conditions | Temperature 0-60℃; Humidity ≤85%RH |
