Winext AN-203A User manual

AN-203A Water Level Monitor User Manual
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AN-203A Water Level Monitor User Manual
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Content
1. Introduction...............................................................................................................................2
1.1 Profile..................................................................................................................................2
1.2 Features ...............................................................................................................................2
1.3 Specification........................................................................................................................3
2. Structure....................................................................................................................................4
2.1 Appearance and dimension .................................................................................................4
2.2 Packing kits.........................................................................................................................5
3. How to work .............................................................................................................................5
3.1 Operation principle .............................................................................................................5
3.2 Turn on/off ..........................................................................................................................6
4. Configuration ............................................................................................................................7
4.1 Precaution............................................................................................................................7
4.2 Tool list ...............................................................................................................................7
4.3 Wireless configuration ........................................................................................................8
4.3.1 Configuration tool....................................................................................................8
4.3.2 Install CP210x driver for wireless configuration tool..............................................8
4.3.3 Function configuration...........................................................................................11
4.3.4 LoRaWAN parameters ...........................................................................................13
5. Installation...............................................................................................................................14
6. Communication Format ..........................................................................................................17
6.1 Heartbeat packet................................................................................................................17
6.2 Alert and cancel alert packet .............................................................................................17

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1. Introduction
1.1 Profile
AN-203A is a wireless water level monitor complied with LoRaWANTM. It is
equipped with piezoresistive water level sensor and packaged with low-voltage
injection molding process. The performance is stable and reliable. With LoRa spread
spectrum communication technology, omnidirectional external antenna design can
better transmit and receive wireless signals and improve the communication distance
of wireless transmission. It has low power consumption. With built-in large capacity
battery, its lifespan is more than three years. The data gathering box is robust with
IP67 enclosure. It can be used in indoor and outdoor.
AN-203A is simple to install and maintain. It can be installed flexibly in the way of
pole-mounting or wall-mounting on the vertical pole, lamp pole and building wall.
Application
Water level measurement and control in property fire control, industry, petroleum,
power plant, mine, urban water supply and drainage, hydrologic exploration and etc.
1.2 Features
Support LoRaWANTM
Range: 0-2m, 0-5m, 0-10m, 0-20m, 0-50m optional, 0.5%FS
Built-in 19000mAh battery, with lifespan over 3 years
IP67 waterproof
High and low threshold value alarm
Support battery low voltage alarm

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1.3 Specification
Item
Description
Performance
Pressure
sensor
Range
Water level range: 0-2m; 0-5m;
0-10m; 0-20m; 0-50m optional
Over-load Pressure
1.5 times full range pressure
Accuracy
0.5% FS
Stability
0.3%FS/year
Power Supply
1.5mA DC
Output Zero and Output
Full
Output Zero: ≤2.0mV DC; Output
Full ≥50mV DC
Impedance
Input: 2kΩ～8kΩ
Output: 3.5kΩ～6kΩ
Wireless
Performance
Data Transmission Rate
300bps-5.4kbps
Frequency
CN470MHz-510MHz
EU863MHz-870MHz
US902MHz-928MHz
AS923MHz
AU915MHz-928MHz
Max Tx Rate
19dBm
Rx Sensibility
-140dBm(SF=12)
Working
Ambient
Temperature
0℃-80℃
Humidity
10%-95% (no condensing)
Power
Supply
Performance
Power Supply
Built-in battery
Battery Capacity
3.6 V/19000mAH
Power Supply
DC 3.3V
Sleeping Current
≤10uA
Working Current
≤130mA
Physical
Parameter
Waterproof Grade
IP66
Dimension
Data gathering box:
110mm*110mm*45mm
(antenna excluded)
Transmitter:Φ27mm*107.5 mm
(the head part)

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2. Structure
2.1 Appearance and dimension
Figure: AN-203A Water Level Monitor Apperearance
Figure: AN-203A Water Level Monitor Dimension

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2.2 Packing kits
Item
Qty(pc)
Remark
AN-203A Water level
transmitter
1
/
Backboard
1
/
Screw
2
M5x12, with gasket and plastic
cover. It is a screw head sketch
below.
Tapping screw
2
M5x30, cross round head with gasket
and plastic cover
Holding Bracket
2
Φ50-110, stainless steel
3. How to work
3.1 Operation principle
The sampling interval time can be configured by user. When the water level data
gathered is higher than or equal to the upper threshold (400cm by default,
configurable) or lower than or equal to the lower threshold (100cm by default,
configurable), the current water level value will immediately trigger the alarm. And
the current water level value will be reported regularly according to the set alarm
reporting interval time. When the water level returns to normal, the water level value
will be reported immediately. The heartbeat packet interval time is calculated from the
time when the trigger event happens.

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3.2 Turn on/off
Turn on: Gently touch inductive switch for 5s with your fingers, the buzzer will
keep ringing. Leave it for about 1s later. Then touch it twice with your fingers
until two Di sounds heard. At this time, the device boots up and can work
normally.
Reset: Touch the inductive switch with fingers for 5s to reset after it boots up.
Join network: The buzzer beeps 3 times indicating it joins network.

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4. Configuration
4.1 Precaution
For device normal operation and detection accuracy, please pay attention to the
following matters before configuration:
Before configuration, please contact our technical staff for the relevant software
and manual.
For wireless configuration, it should be done within the signal coverage area of
the wireless serial port module.
4.2 Tool list
Note: For configuration, you can use wireless configuration tool (wireless
configuration) or USB to TTL cable (cable configuration), but here we choose to tell
customer how to do wireless configuration.
Item
Description
Laptop
Installation
Wireless Configuration tool
The laptop communicates with device via
wireless configuration tool ireless
configuration tool(wireless configuration),
you should install CP210x driver for this
tool
Configuration software
Winext manage App

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4.3 Wireless configuration
4.3.1 Configuration tool
a) Install the CP210x driver for wireless configuration tool, file as below:
b) Install Winext manage App, file as below:
4.3.2 Install CP210x driver for wireless configuration tool
(1) Open CP210x driver for wireless configuration tool
(2) Select the driver program to install depending to the system type.
32-bit operating system selects “CP210xVCPInstaller_x86.exe”.
64-bit operating system selects "cp210xvcpinstaller_x64.exe".

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(3) Install Wireless configuration tool driver
Here we take an example to use the 64-bit operating system to install the wireless
configuration tool driver
Click and select Next to the driver file "cp210xvcpinstaller_x64.exe".
As below:
Select Accept the License Agreement and click on Next, as below:

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Wait for a while and click on Finish, as below:
Check the driver program after installation finished. Click on Computer-Attribute-
Device manager, as below:

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4.3.3 Function configuration
(1) Insert the wireless configuration tool into the laptop USB port. Start host
configuration near the device installation location.
(2) Insert the wireless configuration tool to the USB port. Click on
Computer-Attribute-Device manager and find the correct port (Enhanced COM
Port), as below:
Note: there are two ports for wireless configuration tool, only one of them is for
configuration (Enhanced COM Port)

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(3) Open Winext manage APP and click on “Level” button.
Select port and open it.
a. Select port, click on Open.
b. Reboot device and its DevEUI will be shown in the dropdown list.
c. Select the target device, click on Device Locked
d. Select the parameters to query or set. If it returns OK on the data receiving interface,
it indicates configuration done.
Note:
In wireless configuration mode, if there is no operation within 15s it will exit
automatically.
Device Calibration: This action requires zero calibration before the device is
connected. The measurement unit is cm for water level range, upper alarm threshold
value and lower alarm threshold value.

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4.3.4 LoRaWAN parameters

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5. Installation
The water level transmitter needs to be installed vertically downward.
(1). Installation method in the pool is shown in the figure below:
Note:
a. Avoid placing the transmitter near the liquid inlet and outlet to prevent the shock
force shaking or damaging the transmitter.
b. For better protection, the transmitter can be put in a steel pipe with holes cut in
different height. The radius of pipe should be larger than that of the transmitter. The
transmitter and its cable can be wrapped with iron wire to decrease cable abrasion if
needed.

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Install in the running water:
It is necessary to install a still water device in running water so that the sensor surface
of the transmitter is parallel to the flow direction.
(1). Put the transmitter in a steel pipe in the water. The steel pipe should be thicker.
Make several holes at different heights on the pipe wall to damp the water wave and
eliminate the influence of hydrodynamic pressure
(2). If it needs to detect in a sand and stone water bed in clear waters, shallow burial is
preferred installation method
(3). If the flow pressure is high or there are sediment, the preferred installation
method is shown in the figure blow.

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6. Communication Format
6.1 Heartbeat packet
The data consists of 5 bytes. Here are the definitions below:
0
Sensor type
1 byte
0x05 fixed value
1
Frame type
1 byte
0x01 fixed value
2
Battery voltage
1 byte
The highest level data:
0: normal; 1: low voltage
The 7th of the low level data shows the
voltage value. The actual value needs
to be divided by 10.
3
Water level
2 byte
The high level data come before low
level data, measured in cm.
4
6.2 Alert and cancel alert packet
The data consists of 5 bytes. Here are the definitions below:
0
Sensor type
1 byte
0x05 fixed value
1
Frame type
1 byte
0x02 fixed value
2
Battery voltage
1 byte
The highest level data:
0: normal; 1: low voltage
The 7th of the low level data shows the
voltage value as it needs to divided by
10
3
Water level
2 byte
The high level data come before low
level data, measured in cm.
4

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Shenzhen Winext Technology Co., Ltd.
Address: 5th Floor, Building B50, Zhongchuang Industrial Park, Liuxian Rd, Taoyuan
Street, Nanshan District, Shenzhen 518055, China
Tel：[phone]
Email: [email protected]
Web: www.winext.cn
http://winext.en.alibaba.com
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This is a manual as an installation, operation and use file. Specifications subject to
change are without notice. For more details, please call us or contact the sales staff.