Aginova Sentinel RS-485 DO Manual de usuario
Sentinel (RS-485) DO
Operation Manual
Sentinel (RS-485) DO • Operation Manual
Table of Contents
Chapter 1 Specifications .............................................................................................................................. 1
Chapter 2 Product Presentation ................................................................................................................. 2
Chapter 3 Installation .................................................................................................................................. 3
3.1 Installation of Sensors .................................................................................................................... 3
3.1.1 Quick Dismantling pool side fixed installation .................................................................. 4
3.1.2 Classic pool side fixed installation ..................................................................................... 5
3.1.3 Railing fixed installation .................................................................................................... 6
3.2 Connection of Sensor ..................................................................................................................... 7
Chapter 4 Interface and Operation ............................................................................................................ 7
4.1 User Interface ................................................................................................................................. 7
4.2 Parameter Setting ........................................................................................................................... 7
Chapter 5 Calibration of Sensor ................................................................................................................. 8
Chapter 6 Communication Protocol ........................................................................................................ 10
Chapter 7 Maintenance ............................................................................................................................. 14
7.1 Sensor Cleaning ............................................................................................................................ 14
7.2 Inspection on the Damage of Sensor ............................................................................................ 14
7.3 Preservation of Sensor .................................................................................................................. 14
7.4 Replacement of Fluorescent Cap .................................................................................................. 15
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Chapter 1 Specifications
Specifications Details
Measurement Range
DO:0~20mg/L or 0~200% saturability
Temperature: 0-45℃ with automatic temperature compensation
Measurement Accuracy
DO:±3% or ±0.3 mg/L, whichever is greater
Temperature: ±0.5℃
Repeatability ±0.3mg/L
Resolution 0.01mg/L
Pressure Range ≤0.3Mpa
Materials
SUS316L (Ordinary Version) , Titanium Alloy (Seawater Version)
Up and down cover: PPS + glass fiber, Cable: PUR
Power Supply 9~28VDC
Communication Protocol MODBUS RS485
Storage Temperature -15~60℃
Operating Temperature 0~45℃ (not freeze)
Weight 1.4KG
Level of Protection IP68/NEMA6P
Cable Length Standard: 10 m, the maximum can be extended 100m
Note: The specifications of the product are subject to change without prior notice.
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Sentinel (RS-485) DO • Operation Manual
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Chapter 2 Product Presentation
The Sentinel (RS-485) dissolved oxygen sensor uses advanced fluorescence quenching
technology. When the blue light emitted by the sensor illuminates the fluorescent substance on the
fluorescent cap, the fluorescent substance is excited to emit red light, and since the oxygen molecule
can carry away the energy (quenching effect), the time and intensity of the excited red light and the
concentration of the oxygen molecule become in inverse proportion, the concentration of dissolved
oxygen in water can be obtained by calculation.
This product is widely used in the DO online monitoring of the regulating tank, biochemical tank
and effluent of sewage treatment plant.DO online monitoring in waterworks, surface water, water used in
various industrial production processes, aquaculture and other industries. The sensor appearance is shown
in Figure 1. The sensor size is shown in Figure 2.
Figure 1 Appearance diagram of Sentinel (RS-485) Dissolved Oxygen Sensor
1- Fluorescent cap 2- Temperature Sensor
3- R1 thread 4- Protective cap
Note: When using the sensor, please pull out the sensor protective cap (Series No.4),
Fluorescent cap (Series No.1) is the important part for the measurement function of this sensor. Do
not spin down the fluorescent cap (Series No.1).
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The following figure shows the size of the fluorescence dissolved oxygen sensor:
Figure 2 Dimension diagram of Sentinel (RS-485) Dissolved Oxygen Sensor
Chapter 3 Installation
3.1 Installation of Sensors
Note: The protective cap should be removed before use before measurement. Do not screw
down the fluorescent cap.
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3.1.1 Quick Dismantling pool side fixed installation
Figure 3 Quick Dismantling pool side installation sketch map
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3.1.2 Classic pool side fixed installation
Figure 4 Classic pool side fixed installation sketch map
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3.1.3 Railing fixed installation
Figure 5 Railing fixed installation sketch map
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3.2 Connection of Sensor
The sensor should be correctly connected by the following definition of wire core:
Serial No. 1 2 3 4 5
Sensor Cable Brown Black Blue White Yellow + Green
Signal +12VDC AGND RS485 A RS485 B Ground lead
Chapter 4 Interface and Operation
4.1 User Interface
The sensor is connected to the computer using RS485 to USB, and then use Modbus Poll to connect
Note: Modbus Poll software is a general software that can be downloaded online.
4.2 Parameter Setting
1、Click “Setup” on the menu bar, select “Read / Write Definition” and then set the parameters（The
slave address for the first time is the slave label）, then enter “30” for Quantity in the dialog box , click
“OK”
Note: After the slave address is changed, the new address will be used for communication and the
slave address for the next time connection is also the most recently changed address.
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2、Click “Connection” on the menu bar, select the first line in the drop-down menu “Connection
setup”（The baud rate for the first time is the slave label） and click “OK”.
Note: Port is set according to the Port number of the connection.
Note: If the sensor has been connected as described, and “Timeout Error” appears on the
software “Display status”, it means that the connection is failed; remove and replace the USB port
or check the USB to RS485 converter, repeat the above procedure until the sensor connection is
successful.
Chapter 5 Calibration of Sensor
The dissolved oxygen sensor has been calibrated at the factory and if you need to calibrate yourself,
follow the steps below
The specific steps of automatic air calibration are as follows:
Dry the sensor, add a small amount of water (25~50mL) to the calibration kit and shake the bag for a
few times. Then put the sensor into the calibration kit without touching the water and seal the
calibration kit with your hand to make the sensor in a saturated air. The sensor should be away from
light and high temperature and hard objects during calibration. The measured data is stable, Double-click
the “06”, and a dialog box pops out. Enter “27” for Address in the dialog box, “16” for Value, then click
“Send”.
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Sentinel (RS-485) DO • Operation Manual
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