Online dissolved oxygen meter for aquaculture DO-6800 online dissolved oxygen Controller
Products introduction

Online dissolved oxygen meter for aquaculture DO-6800 online dissolved oxygen Controller
Main features

• Waterproof, dust proof, moisture-proof (IP65), high-end design look.
• Large screen LCD display, support English menu (switching from each other).
• Simultaneous display of multiple parameters: dissolved oxygen value, temperature, output current, alarm point, etc. are displayed at the same time, which is intuitive and easy to read, and has a range over limit prompt.
• The screen displays the alarm status and can be accompanied by the switch ON/OFF signal output.
• Compensation function: automatic temperature compensation 0~60°C, salinity compensation, manual correction value.
• Communication function: RS485 and 4-20mA interfaces are all optical isolation technology. The RS-485 communication interface is compatible with the MODBUS part of the protocol (optional) and can be converted to RS-232. It has two 4-20 mA outputs, corresponding to temperature and DO value respectively. The DO value corresponding to 4-20 mA current output can be set arbitrarily; the other 4-20 mA current output defaults to 0-130 °C; in some fields widely used. Support the company's internal IoT and customer-customized Internet of Things.
• 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.

Online dissolved oxygen meter for aquaculture DO-6800 online dissolved oxygen Controller
Technical indicators

• Measuring range: 0~200.0ug/L, 0~20.00mg/L, 0~60℃ (note: ug instrument need DO-6800G).
• Resolution: 0.1ug/L, 0,01mg/L, 0,1℃.
• Accuracy: ug/L: ±1.0%FS; mg/L:±0.5%FS， ±0.3℃.
• Automatic temp compensation: 0~60℃.
• 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, photoelectric isolation protection, improve anti-interference capability, 4-20ma corresponding range can be reversed 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: 96×96×168mm
• Hole-cutting Size: 92×92mm
• Weight: 0.9Kg
• Installation: Surface mounting
• Protection level: IP65