PRoducts introduction DO-6800 is an online intelligent dissolved oxygen detector produced by our company with foreign technology. It adopts imported components and dissolved oxygen film head, based on the latest polarographic analysis technology, advanced production technology and surface mount technology. Using this series of advanced analytical techniques to ensure the long-term stability and reliability of the instrument. It has Chinese/English menu operation, notebook storage measurement data, 485 communication and other functions. Can be widely used in chemical fertilizer, metallurgy, sewage treatment aeration, environmental water treatment engineering, pharmaceutical, biochemical, food, aquaculture and tap water and other solutions in the continuous monitoring of dissolved oxygen values.   Main features

• Waterproof, dust Proof, moisture-proof (IP65), High-end design look.
• Large screen LCD display, support English menu (Switching from each other).
• the screen displays the alarm status and can be accompanied by the switch on/off signal output.
• Compensation function: automatic temperature compensation 0~60 centi-degree, salinity compensation, manual correction value.
• Communication function: RS485 and 4-20mA 
• with automatic cleaning function, use running water to cleaning device.
• Optional with the company's host computer online acquisition software for data acquisition and processing.
• Note book: It Can store 50 DO measurement data, users can record measurement data as needed.
• Historical curve: It Can record 50 sets of DO historical data (sampling time- interval Is 1-240Minutes), and has a query function.
• Automatic identification of standard solution and capable for factory reset.
• Watchdog function: make sure the meter doesn't crash.
• Power off protects > 10 years.

 Technical indicators

• Measuring range: 0~200.0ug/L, 0~20.00mg/L, 0~60 Centi-degree (note: Ug instrument need DO-6800G).
• Resolution: 0.1ug/L, 0,01mg/L, 0,1Centi-degree
• Accuracy: ug/L: ±1.0%FS; mg/L:±0.5%FS, ±0.3Centi-degree
• Automatic temp compensation: 0~60Centi-degree
• Control interface: two group of on/off relay contacts are divided into upper and lowEr limit alarm control.
• Automatic cleaning interface: A set of automatic cleaning control points, cleaning time 0-9999 seconds, interval time 0-9999 minutes.
• 4-20ma output: Two current output
• 485 interface: optically isolated output, support for IOT, (partially compatible with MODBUS protocol).
• Relay: the relay hysteresis is arbitrarily set, relay load 3A 220VAC
• Working conditions: Ambient temperature is 0~60°C, relative humidity ≤90%.
• Output load: <750Ω(4-20mA)
• Working voltage: 220VAC ±10%, 50/60hz or DC24V and DC12V.
• Size: 9696168mm
• Hole-cutting Size: 9292mm
• Weight: 0.9Kg
• Installation: Surface mounting
• Protection level: IP65