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Aquaculture water quality online detection - dissolved oxygen detector

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Product introduction

DO-6800 is an online intelligent dissolved oxygen detector produced by our company with foreign technology. It uses imported components and dissolved oxygen film heads, based on polarographic analysis technology, and advanced production technology and surface mounting technology. This series of advanced analysis technologies are used to ensure the long-term stability, reliability and accuracy of the instrument. It has Chinese/English menu operation, notebook storage of measurement data, 485 communication and other functions.

It can be widely used for continuous monitoring of dissolved oxygen value in chemical fertilizer, metallurgy, sewage treatment aeration, environmental water treatment engineering, pharmacy, biochemistry, food, aquaculture, tap water and other solutions.

main features

◇ Brand new waterproof, dust-proof and moisture-proof high-quality shell (IP65) technology, surface painting technology, generous and high-end appearance of the instrument.

◇ With automatic cleaning function (optional), the cleaning device (optional) is the tap water cleaning method.

◇ The product has high precision, high stability and strong anti-interference ability.

◇ Imported components and dissolved oxygen membrane heads are used, based on the latest polarographic analysis technology.

◇ Large screen dot matrix LCD display, support Chinese and English menus (mutual switching).

◇ Simultaneous display of multiple parameters: dissolved oxygen value, temperature, output current, alarm point, etc. are displayed at the same time, and there is a prompt of range overrun.

◇ The screen displays the alarm status and can be accompanied with ON/OFF signal output.

◇ Compensation function: automatic temperature compensation 0~60 ℃, salinity compensation. Manual correction value (optional)

◇ Communication function: interface photoelectric isolation technology, with RS-485 communication interface (partially compatible with MODBUS protocol) (optional), which can convert RS-232. The DO value corresponding to the 4~20 mA current output can be set arbitrarily, and the DO value can control 4~20 mA forward and backward, which is widely used in some fields. Support the company's internal Internet of Things and customized Internet of Things.

◇ Two channels of 4~20 mA: one channel is optional.

◇ Historical curve: it can record 50 groups of historical data (sampling interval 1-240 minutes), and has the query function.

◇ Notepad: it can store 50 measurement data, and users can query the data.

◇ Arbitrary setting function of hysteresis value to avoid frequent action of switch relay.

◇ Watchdog function: ensure that the instrument will not crash.

◇ The core devices are all from foreign famous brands.

◇ Factory settings can be restored. Power failure protection > 10 years.

Technical indicators

◇ Measurement range: 0 ~ 200.0 ug/L, 0 ~ 20.00 mg/L, automatic range switching; 0~60 ℃ (DO-6800G shall be selected for microgram injection instrument)

◇ Resolution: 0.1ug/L, 0.0 1mg/L, 0.1 ℃

◇ Precision: ± 1.0% FS, ± 0.3 ℃

◇ Automatic temperature compensation: 0~60 ℃

◇ Control interface: two groups of ON/OFF relay contacts are divided into high point and low point alarm signal photoelectric isolation output.

◇ Automatic cleaning interface: a group of automatic cleaning control points, cleaning time 0-9999 seconds, interval 0-9999 minutes

◇ 4~20mA current output: two current outputs, photoelectric isolation protection, improve anti-interference ability, and 4-20mA corresponding range can be output in reverse.

◇ 485 interface: photoelectric isolated output, supporting the Internet of Things (MODBUS protocol is partially compatible).

◇ Relay: relay hysteresis can be set arbitrarily, and relay load is 3A 220VAC

◇ Working conditions: ambient temperature 0~60 ℃, relative humidity ≤ 90%

◇ Output load: load < 750 Ω (4-20mA)

◇ Working voltage: 220VAC 10%, 50/60Hz, or order DC24V, DC12V power supply

◇ Size: 100 × one hundred and six × 168mm

◇ Opening size: 92 × 92mm

◇ Weight: 0.9Kg

◇ Installation mode: panel installation

◇ Protection grade: IP65