BOQU DOG-2092Pro Online Dissolved Oxygen Meter User Manual

June 3, 2024
BOQU

BOQU DOG-2092Pro Online Dissolved Oxygen Meter

DOG-2092Pro Online Dissolved Oxygen Meter

Shanghai BOQU Instrument Co., Ltd.
Address:No.
118 Xiuyan Road,Pudong New Area,Shanghai,zip code:201315,China Web:www.boquinstrument.com | michael@shboqu.com | Mob:86-15000087545

Product description
DOG-2092Pro online dissolved oxygen meter is a brand-new online intelligent analog dissolved oxygen meter independently developed and manufactured by Shanghai BOQU instrument Co.,Ltd. Complete functions, stable performance, easy operation, low power consumption, safety and reliability are the outstanding advantages of this instrument. This dissolved oxygen meter uses matching simulated dissolved oxygen sensor, which can be widely used in industrial occasions such as thermal power generation, chemical industry, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water.

Product Specification Sheet

Name Online Dissolved Oxygen Meter
Model DOG-2092Pr
Measurement 0 ~20 mg/L(ppm)0 ~200 % -30.0~130.0℃
Accuracy ±1%FS ±0.5℃
Shell material ABS
Power 90 – 260V AC 50/60Hz
Power consumption 4W
Output Two     way of 4-20mA
Relay 5A/250V AC            5A/30V DC
Communication RS485 Modbus RTU
Shell material ABS
Measurement 0 ~50 mg/L 0 ~50 mg/L(ppm) 0 ~500 % -30.0~130.0℃
Dimension 98.2×98.2×128.3mm
Hole size 92*92mm
Protection IP65

Installation and wiring

Panel size chart

DOG-2092Pro Online Dissolved Oxygen Meter Installation and
wiring

Embedded installation diagram

DOG-2092Pro Online Dissolved Oxygen Meter Embedded installation
diagram

Pipeline installation diagram Wiring diagram

DOG-2092Pro Online Dissolved Oxygen Meter Pipeline installation
diagram

Wiring diagram

DOG-2092Pro Online Dissolved Oxygen Meter Wiring
diagram

Operation panel

The main panel of the dissolved oxygen meter has 2 modules, the LED liquid crystal display module and the button module. The user can set and adjust the parameters of the instrument through the 5 keys on the panel.
DOG-2092Pro Online Dissolved Oxygen Meter Operation
panel

  1. Set/Exit button
  2. Select/change button
  3. Up selection button
  4. Down selection button
  5. Confirm button
  6. Instrument Display
 Measurement interface

After the start-up animation ends, enter the main measurement interface. When the meter is working normally, the LED display shows the following contents.
DOG-2092Pro Online Dissolved Oxygen Meter . Measurement
interface

  1. Measurement reading
  2. Measurement unit
  3. Measure temperature
  4. 4-20mA corresponding value of dissolved oxygen
  5. Measurement mode
  6. Alarm Reminder when the upper/lower limit is exceeded

Three, settings
Press the “Set/Exit button” to enter the password input interface.
DOG-2092Pro Online Dissolved Oxygen Meter . Measurement
interface
Enter settings: Enter the password “3700” to enter the setup menu.
DOG-2092Pro Online Dissolved Oxygen Meter . Measurement
interface

Measurement settings

In this menu, the user can change the measurement method %/mg/L/ppm.
DOG-2092Pro Online Dissolved Oxygen Meter Measurement
settings

4-20mA setting

In this menu, the user can change the corresponding value of 4-20mA and set the corresponding effective range.
DOG-2092Pro Online Dissolved Oxygen Meter 4-20mA
setting

Communication settings

In this menu, the user can change the communication address and communication speed.
DOG-2092Pro Online Dissolved Oxygen Meter Communication
settingsDOG-2092Pro Online
Dissolved Oxygen Meter Communication settings

Temperature setting

In this menu, the user can set the temperature compensation type and manually set the temperature.
DOG-2092Pro Online Dissolved Oxygen Meter Temperature
setting

Relay 1 setting

In this menu, the user can switch the relay 1 function, set the parameter alarm upper limit, alarm return difference, and alarm delay time.
DOG-2092Pro Online Dissolved Oxygen Meter Relay 1
setting

 Relay 2 setting

In this menu, the user can switch the relay 2 function, set the parameter alarm lower limit, alarm return difference, and alarm delay time.
DOG-2092Pro Online Dissolved Oxygen Meter Relay 2
setting

Language setting

In this menu, users can change the language of the system interface. Simplified Chinese and English are built-in.

Backlight setting

In this menu, the user can change the backlight mode of the LCD screen, select the backlight to be always on or delay to turn off (the default is to delay the turn off), change the backlight brightness (brightness level 1-5, brightness increase), and change the contrast.
DOG-2092Pro Online Dissolved Oxygen Meter Backlight
setting

Restore factory settings

In this menu, the user can restore the current output and relay to the factory parameters.

Four, calibration Press the “Set/Exit button” to enter the password input interface.
Four, calibration Press the “Set/Exit button” to enter the password input interface.

Enter calibration: Enter the password “3900” to enter the calibration menu.

DOG-2092Pro Online Dissolved Oxygen Meter Restore factory
settings

Calibration parameters.

In this menu, users can manually change the parameters of atmospheric pressure and salinity.

Saturation calibration menu

Place the sensor 3-5cm above the liquid level and press the confirm button to perform saturation calibration after the value is stable.

Calibration Menu of Known Concentration

Put the sensor in the measuring liquid of known concentration, set it to the ppm value of the solution of known concentration, and press the confirm key,

Zero point calibration menu

Put the sensor in anaerobic water and press the confirm button to perform zero oxygen calibration after the value is stable.

Restore factory settings menu

Restore the factory settings to initialize the sensor parameters to the factory parameters

Appendix
  1. Communication protocol Communication parameters: Baud rate: 4800, 9600, 19200 (default is 9600) Serial data format: 8N1 (8 data bits, no parity, 1 stop bit) Function code: 03 Device address: Dissolved oxygen controller defaults to 3.
    Register definition:Register  address (decimal)| Register definition| R/ W| illustrate
    ---|---|---|---
    0| Temp| R| ×0.1℃,sint16
    1| DO| R| ×0.01mg/L,uint16
    2| nA| R| ×0.01nA,uint16
    3| saturation| R| ×0.1%,uint16
    8| RTU Address| R/ W| ModbusMailing address, dissolved oxygen defaults to 3
    9| Baud rate| R/W| 4800,9600,19200,默认为 9600

Detailed example of communication format :
Data read instruction:
Address + function code + register start address + register read number + CRC check code(hexadecimal)
For example Tx: 03 03 00 01 00 01 D4 28

Address| Function

Code

| Register start address| Number of read

registers

| CRC Check code
---|---|---|---|---
03| 03| 0001| 0001| D428

Data return instruction: Address + function code + data length + data + CRC check code (hexadecimal)
For example, Rx: 03 03 02 00 DF 80 1C

Address Function Code Data length Dissolved oxygen value CRC Check code
03 03 02 00DF 801C

Use a calculator (programmer mode) to convert the hexadecimal number DF to decimal, andgetthe value 223. The actual value contains 2 decimal places, the actual value

Model DOG-209F DOG-209FA
Range 0~20.00mg/L
Temp -5~50.0℃
Accuracy 3%,±0.5℃
Film thickness 50um 100um
Zero oxygen <0.1mg/L
Drift <2%/month
shell material 316L stainless steel,PVC
Pressure 0.06MPa
waterproof IP68/NEMA6P
Polarization time 60min
Measurement error ±<0.1mg/L

References

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