Daruifuno DUC2-DO Quick manual

Dissolved oxygen controller
Basic User Manual
Daruifuno
Model: DUC2 -DO
Version 1.0

Chapter 7 Menu Description
Chapter 4 Electrical Installation
Chapter 1 Overview
Chapter 5 User Interface
4.1 Power connection..............................................................................................10
4.2 Definition of Terminals........................................................................................11
3.1 Installation location .............................................................................................6
3.2 External dimensions of the instrument.................................................................7
3.3 Panel type installation..........................................................................................7
3.4 Wall Mounting......................................................................................................8
3.5 Pipeline installation..............................................................................................9
1.1 Technical parameters........................................................................................5
Chapter 2 Unboxing................................................................................................................6
Chapter 3 Mechanical Installation
5.1 Panel keys.........................................................................................................12
5.2 Display screen...................................................................................................13
Chapter 6 System Default Settings......................................................................................15
7.1 Probe set............................................................................................................16
7.2 Alarm Set...........................................................................................................16
7.2.1 Control functions..........................................................................................16
7.2.2 Cleaning output............................................................................................16
7.2.3 Cleaning state..............................................................................................17
7.2.4 Ambient temperature alarm..........................................................................17
Preface Preface....................................................................................................................1

7.3 Current set.................................................................................................... 17
7.3.1 Output type................................................................................................. 17
7.3.2 Channel selection........................................................................................17
7.3.3 Upper limit value.........................................................................................17
7.3.4 Lower limit value...............................................................................,.........17
7.4 Communication settings..............................................................................18
7.4.1 Slave ID......... .............................................................................................18
7.4.2 Baud rate.....................................................................................................18
7.4.3 Verify Bit ..........................................................................................,,,,,.......18
7.4.4 Stop Bit........................................................................................................18
7.5 System Set.....................................................................................................18
7.5.1 Time setting.................................................................................................18
7.5.2 Display Speed.............................................................................................18
7.5.3 Backlight selection .....................................................................................18
7.5.4 Contrast set.................................................................................................18
7.5.5 Version Information.....................................................................................18
7.5.6 Password settings.......................................................................................18
7.6 Historical records.........................................................................................18
7.6.1 Memory information ...................................................................................18
7.6.2 Recording interval ......................................................................................18
7.6.3 Data query ..................................................................................................18
7.7 Testing and Maintenance.............................................................................19
7.7.1 Current calibration ......................................................................................19
7.7.2 Relay Test...................................................................................................19
7.7.3 Current test.................................................................................................19
7.7.4 Measuring method......................................................................................19
7.7.5 Ambient temperature...................................................................................19
7.7.7 Meter reset..................................................................................................19
7.8 Setting list......................................................................................................19
A Modbus register information...........................................................................20

1
This manual is suitable for products produced by our company L3XXXXXXXXXX Series of digital
universal controllers.
The parameters and functions supported by different series of meters can be identified and
judged by referring to the "single machine code" label of the fuselage.
Each qualified instrument and equipment has an independent body "single machine code"
label, the serial number of the code is unique, please do not tear the label, otherwise the
quality guarantee will be lost.
"Single machine code" label of the fuselage:
Product serial NO.
Serial NO.
Hardware version
Software version
The meaning of the label:

2
Important Safety Information
Please read and observe the following:
Please read this entire manual before unpacking, installation and operation, with particular attention to all
danger warnings and precautions. Failure to do so may result in damage to the instrument or personal
injury to the operator due to misuse. Do not install or use the instrument by any means other than those
specified in this manual.
•After opening the analyzer case, the user may touch the instrument supply voltage.Please make sure to
disconnect the power, before you open the analyzer cases. Analyzer housing assembly only low
voltage, the operation is safe.
•The analyzer must be installed in accordance with relevant local codes and the professional and technical
personnel, to comply with the analyzer's technical specifications and input ratings. If you are not sure
which of the main power lines is the neutral line, use a double-pole switch to power off the analyzer.
• As soon as a problem occurs with the analyzer, disconnect the analyzer from power to prevent any
unintentional operation that could result in damage to the instrument. For example, it may be in an unsafe
state when the following situations occur:
(1) The analyzer appears visibly damaged;
(2)Analyzer fails to operate properly or provide the intended measurements;
(3)Analyzer has been stored for a long period of time at temperatures over 70°C environment.
• Wiring or repair should be done by professionals, and only the power-off analyzer should be operated.

3
Caution:
Warning:
The warning sign is shown above, which warns the user might get hurt
Useful signs
In add it ion to installation and operation information, the manual also includes warning signs
related to user safety, caution signs related to possible instrument failure, and note signs
related to important and useful operating instructions.
Power Wiring Note
1. Please install voltage stabilization and surge protection equipment that meets the instrument
parameters at the power supply terminal to ensure that the power supply provided by the
instrument is stable and reliable and meets the standards, otherwise the instrument will be
irreversibly damaged due to poor power supply.
2. Damage caused by incorrect power supply is not covered by our quality guarantee.
3. Detailed parameters see the technical parameters.
The caution sign is shown above, it reminds the user that the instrument may
malfunction or be damaged.
The note sign is shown on the left, warns the user of important information about
operation.
☞

4
Guarantee
Our company warrants the instrument for one year (12 months) from the date of delivery.
Consumables and consumable parts in the equipment are not covered by the warranty.
The terms of this warranty shall not apply if damage to the instrument occurs beyond the
warranty period, or in the opinion of the company, the breakage or destruction of the
instrument is due to improper use, lack of maintenance, improper installation, improper
modification, abnormal environmental conditions, etc.
The Company's obligation under this warranty is limited to providing replacement or repair of
this product, as the case may be. The product must be thoroughly cleaned to remove any
contaminated chemicals before it is accepted for replacement or repair. Our obligations shall
not exceed the price of the product itself. In no event shall the company beliable for damage
caused by incidental or consequential damages, whether to persons or objects. The
Company shall not beliable for any other loss, damage or expense of any kind, including
economic loss resulting from the installation, use or improper use of the product.
For details, please refer to the product's quality promise with the product, and keep this
manual and the quality promise properly.

5
This product is a digital analytical instrument. According to the measurement object, it is
connected to a digital electrode to measure various material parameters. The instrument
supports two current outputs, one digital communication output and two control relays with
configurable functions.
——— Chapter 1 ———
Overview
Relay control: Number of channels: 2
Control type: high and low alarm/cleaning control/ambient temperature
alarm
Contact type: SPST
Contact capacity: 3A 250VAC
Communication interface: RS485 MODBUS-RTU
Memory backup: All user settings are kept in EEPROM indefinitely
Historical data: 14000 storage points, record interval can be set
Operating environment: 0 ～+60℃, 0 ～95% relative humidity,
non-condensing
Storage environment: -20 ～+70℃, 0 ～95% relative humidity,
non-condensing
Power requirements: 100～240VAC or 18～36VDC, 24W MAX
Installation method: Panel/ wall/ Pipe installation
Instrument size: 144*144*120 (unit mm)
Protection level: IP66
Meter weight: About 800g
Current output: Number of channels: 2
Output type: active 4～20mA or 0～20mA
Maximum load: 1000Ω

6
——— Chapter 2 ———
Unboxing
After unpacking, it is recommended to save the shipped cardboard box and packaging materials
in case the instrument needs to be stored or re-shipped. Check the equipment and packaging
materials for signs of damage during transportation. If there are signs of damage, notify the
person transporting the goods immediately.
3.1 Installation location
The installation location of the instrument is:
Not affected by weather (rain, snow, ice, dust, etc.)
• Clean, dry and with little or no vibration
• Keep away from corrosive liquids
• Within the limit of ambient temperature (32～140℉or 0～60℃)
—— — Chapter 3 ———
Mechanical installation
Note: Please read this operation manual carefully before installation to
avoid damage to the instrument due to incorrect wiring.
• Please choose a well-ventilated location to install the instrument to
avoid direct sunlight.
• Electrode signal transmission must use specific cables or cables
provided by our company, and cannot be replaced by wires.
• When using AC220V power supply, you should avoid using
three-phase power supply to avoid power spike interference (if power
spike interference occurs, you can separate the power supply of the
controller from the power supply of the control device, so that the
controller uses the power supply alone, or The coil ends of all
electromagnetic switches and power control devices are connected to
spike absorbers to eliminate spikes, such as dosing machines, mixers,
etc.).
• It is generally recommended that the controller be installed as close to
the electrode as possible.
• Avoid corrosive liquids, or need to protect and isolate the environment.
Be careful:
The analyzer is directly exposed to sunlight,
Its operating temperature may exceed its specified limit temperature,
And will reduce the visibility of the display.
☞

7
Figure 3-2 Schematic diagram of panel installation
Figure 3-1 Schematic diagram of the appearance and dimensions of the instrument
When the instrument is installed in the panel cabinet type, use two fixing
brackets to fix the instrument. The installation diagram is as follows:
3.3 Panel cabinet installation
3.2 External dimensions of the instrument

8
3.4 Wall mount
Connect the gray back panel to the instrument, and then install it on the
box or the side wall of the wall. The installation dimensions and
schematic diagram are as follows:
Figure 3-3 Schematic diagram of wall-mounted installation
Figure 3-4 Wall-mounted installation hole size diagram

9
3.5 Pipeline installation
Connect the gray backplane to the instrument, and then fix the
backplane to the horizontal pipe or vertical pipe with a clamp. The
installation diagram is as follows:
Figure 3-5 Schematic diagram of pipeline installation

10
Figure 4-1 Two power supply terminals
——— ———
Electrical Installation
☞
4.1 Power connection
Two power supply modes: AC power supply 100 ～240VAC and DC
power supply 18～36VDC.
After unscrewing the screws on the front cover of the instrument, open
the cover and you can see the wiring terminals.
Figure 4-1 shows the locations and names of the access terminals of
the two power sources.
Note: Before connecting the AC power supply, be sure to cut off
the power supply first, and only operate when the power is off!
Electrical Installation

11
POWER
AC IN
100-240V
L
AC power live wire input
POWER
DC IN
18-36V
+
DC power supply positive
AC power ground wire
NC
Floating terminal
N
AC power neutral input terminal
-
DC power supply negative
OUT2
+
Current two output positive
V-
Electrode power-terminal
-
Current two output negative
V+
Electrode power + terminal
OUT1
+
Current one output positive
BS
Electrode communication terminal B
-
Current one output negative
R1
Relay one contact
RS485
A
RS485 signal D+(A) end
Relay one contact
B
RS485 signal D-(B) end
R2 Electrode
communication
terminal A
Relay two contacts
AS
Electrode communication terminal A
Relay two contacts
The following table is the definition of wiring terminals:
4.2 Wiring terminal definition
The terminal location and name are shown in the figure below:
The following table shows the definition of two power supply terminals:
Electrical Installation

12
5.1 Panel keys
Up key: Press this key in the menu option interface to move the cursor up; press this key in the
parameter setting interface to increase the data by 1 (change in the order of 0, 1, 2,... 9, 0).
Return key
Enter
LOT key
Up key
Left Key
Menu
Right key
Down key
The instrument panel consists of a display screen and eight buttons, namely IOT (Internet of
Things) button, menu (menu) button, back (return) button, enter (confirm) button, four up,
down, left and right Arrow keys.
——— Chapter 5 ———
User Interface
Down Key: Press this key in the menu option interface to move the cursor down; press this key
in the parameter setting interface to reduce the data by 1 (changes in the order of 9, 8, 7... 0, 9);
in the measurement interface, press This key can switch three kinds of secondary displays in
cycles: "Temperature & Electrode Connection Status" →"Relay Status" →"Two Currents".
Left key: In the parameter setting interface, press this key to move the cursor to the left.
In the menu interface, press this key to return to the previous menu.
User Interface

13
Note: The LOT key function can only be used in the instrument with hardware version C0 or higher.
☞
Date and time: Display current date and time information.
5.2 Display
The meter normally displays the measurement interface after
power-on, and the specific information is as follows:
Histogram
Time
Electrode type and connection status
Ambient temp.
warning
Date
Measured value
Menu key: Press this key in the measurement interface to enter the menu interface, press this key
in the menu option interface to directly return to the measurement state, and press this key in the
parameter setting interface to return to the previous menu.
Right key: In the parameter setting interface, press this key to move the cursor to the right.
Enter key: In the menu option interface, press this key to select the option; in the parameter
setting interface, press this key to confirm and return to the previous menu.
Return key: Press this key to return to the previous menu. For example, in the parameter
setting interface, press this key to abandon the modification and return to the previous menu.
LOT key：Short press this key in the measurement interface to turn on or off the Internet of Things
function, and long press to enter the Internet of Things setting menu.and long press to enter the
Internet of Things setting menu.
User Interface

14
Histogram: indicates the ratio of the current measurement value to the electrode range.
Measurement value: Display the current measurement value, the unit changes according to
the measurement object.
When "<" appears in front of the measured value, it means that the current
measured value is lower than the zero point, and zero point calibration is
required.
When “>”appears in front of the measured value, it means that the
current measured value is out of the display range of the meter.
Temperature warning: When the operating environment temperature exceeds 50°C, a "!" will
appear on the screen, indicating that the operating environment temperature of the instrument is
too high, and heat dissipation measures need to be added.
Electrode connection status: Display the current electrode connection status.
No electrode connection: XX-NC
Electrode connection: XX-CON
Analog measurement: XX EMLUATOR (flashing)
User Interface