Online Dissolved Oxygen /Do Sensor for Fish/Aquaculture/Agriculture/Water Treatment 4~20mA (DO-6800)

Model NO.
Current Output
Isolation to Protect, 4 ~ 20mA Signal Output
Contact Capacity
10A/220V AC (Resistive Load)
Output Load
Load <500omega; (0-10mA), Load <750omega; (4-20mA)
AC 220V+-10%, 50/60Hz
Working Environment
Ambient Temp. 0-60c, Relative Humidity<=90%
96X96X115mm(H X W X D), 0.9kgs
Hole Size
91X91mm (H X W)
Installation Mode
Panel Mounted
Transport Package
96*96*115 mm, 0.9kg
HS Code
With a positive and progressive attitude to customer's curiosity, our organization repeatedly improves our products top quality to meet the wants of consumers and further focuses on safety, reliability, environmental necessities, and innovation of Online Dissolved Oxygen /Do Sensor for Fish/Aquaculture/Agriculture/Water Treatment 4~20mA (DO-6800), The product will supply to all over the world, such as: Guatemala, United States, Rotterdam, Based on our guiding principle of quality is the key to development, we continually strive to exceed our customers' expectations. As such, we sincerely invite all interested companies to contact us for future cooperation, We welcome old and new customers to hold hands together for exploring and developing; For more information, be sure to feel free to contact us. Thanks. Advanced equipment, strict quality control, customer-orientation service, initiative summary and improvement of defects and extensive industry experience enable us to guarantee more customer satisfaction and reputation which, in return, brings us more orders and benefits. If you are interested in any of our merchandise, make sure you feel free to contact us. Inquiry or visit to our company are warmly welcome. We sincerely hope to start a win-win and friendly partnership with you. You can see more details in our website.
HEBEI JIRS IMPORT & EXPORT CO., LTD. Diamond / Audited Supplier
Online Dissolved Oxygen/Temperature controller
Code: DO-6800 


  1. DO-6800 online Dissolved Oxygen Temperature Transmitting Controller is a micro computerized precision instrument.   
  2. The large LCD display, English menu operation.
  3. Multi-parameter display at the same time: the value of dissolved oxygen, temperature, output current, alarm points, etc. Intuitive and easy to read, and alarm for range over run
  4. Screen displays alarm status and accompanied by a switch ON / OFF signal output
  5. Automatic Temperature Compensation: Automatic 0ºC to 60ºC
  6. Communication  function  (optional):  RS-485  communication  interface (MODBUS protocol is partially compatible), 4 to 20 mA current output corresponding to the DO value can be set freely.
  7. Notepad: can store 50 measurements, the user can record measurement data.
  8. Hysteresis amount can be set freely to avoid frequent switching relay action
  9. Watchdog function: to ensure that the instrument will not crash  
  10. Core devices from famous foreign brands
  11. Restore the factory settings. Power-down protection> 10 years

Widely used in the detection and control of dissolved oxygen in various water treatments, boiler water deoxygenization, environmental monitoring, aquaculture and other fields.

Main technique Specification:

online Dissolved Oxygen Temperature Transmitting Controller
Measuring Range 0.00 – 20.00 mg /L ,
0 – 200.0 ug /L, (optional)
Resolution 0.1 ug/L,
0. 01 mg/L,
Accuracy ug/L: ±1.0%FS;
Display Large Screen Multi-parameters LCD
Temp. Compensation NTC 10K, 0.0ºC-60.0 ºC
Automatic temperature compensation
Current output                   isolation to protect, 4 ~ 20mA signal output
Control output two sets of ON / OFF relay contacts, divided into the high
point, low alarm signal , optically isolated output.
Contact capacity 10A/220V AC (Resistive Load)
Output load load <500Ω (0-10mA), load <750Ω (4-20mA)
Power AC 220V±10%, 50/60Hz
Working environment Ambient Temp. 0-60ºC, Relative Humidity ≤90%
Dimensions 96×96×115mm(H X W X D), 0.9kgs
Hole size 91×91mm H X W)
Installation Mode Panel Mounted