Weihai Systems JXBS-3001-EC User manual

INSTRUCTION
MANUAL
Soil EC humidity temperature sensor
JXBS-3001-EC
TYPE 485
VER1.0
WeihaiJXCTElectronicTechnologyCo.,Ltd.
I PRODUCT INTRODUCTION

1.1 Product Overview
The soil EC moisture temperature three-in-one sensor is
suitable for measuring soil temperature and moisture and
total soil salt content (conductivity). The soil three-in-one
sensor creatively measures salinity, moisture, and temperature
together, which greatly facilitates the customer's systematic
evaluation of soil conditions. .
Compared with the German original high-precision sensor
and the actual soil drying and weighing method calibration,
the precision is high, the response is fast, and the output is
stable. It is less affected by the salt content of the soil and is
suitable for various soil qualities. Can be buried in the soil for

a long time, resistant to long-term electrolysis, corrosion
resistance, vacuum potting, completely waterproof.
1.2 Application
It is widely used in scientific experiments, water-saving
irrigation, greenhouses, flowers and vegetables, grass
pastures, rapid soil testing, plant cultivation, sewage
treatment, grain storage and water content and temperature
measurement of various particulate matter.
1.3 Measurement parameters and
hardware parameters
PARAMETERS
CONTENT
PARAMETERS
CONTENT
POWER SUPPLY
12-24V DC
TEMPERATURE
MEASURING
RANGE
-40 ℃-80 ℃(可
定制)

MOISTURE
MEASURING
RANGE
0-100%
TEMPERATURE
ACCURACY
±0.5℃
STORAGE
ENVIRONMENT
S
-45℃-115
℃
OUTPUT
SIGNAL
RS485
MOISTURE
ACCURACY
±3% in
the range of
0-53%;
±5% in
the range of
53-100%
INSTALLAITION
METHOD
Fully embedded
or all probes
inserted into the
test medium
EC RANGE
0-10000us/
cm
EC
RESOLUTION
10us/cm
RESPONSE
TIME
<1s
PROTECTION
CLASS
IP68
POWER
CONSUMPTIO
N
≤0.15W
（@12V
DC , 25℃）
WORKING
PRESSURE
RANGE
0.9-1.1atm
When measuring frozen soil layer, the moisture value will
be low and inaccurate, which requires user compensation.
The factory default product is suitable for measuring

ordinary yellow, black and red land. It is not suitable for
absolute moisture measurement in saline-alkali land, sandy
land or other powder objects with large salt content. The
single can still characterize the relative moisture difference.
For this type of moisture measurement, the manufacturer
should be contacted for a separate calibration.
1.4 Calculation method and meaning of
soil moisture
The soil moisture calculated by this sensor is the soil
volumetric water content (also called soil volumetric water
content), which is what people call "soil humidity" and "soil
moisture" in a popular sense.

The volumetric water content of soil is calculated as the
ratio of the volume of water in the soil to the total volume of
the soil. 0% means completely dry soil without any moisture,
100% means completely water without any soil.
1.5 System Frame Diagram
The sensor can be connected and used alone. First, it is
powered by 12V DC power supply. The device can be directly
connected to a PLC with a 485 interface, and it can be
connected to a microcontroller through a 485 interface chip.
Program the microcontroller and PLC through the modbus
protocol specified later to cooperate with the sensor. At the
same time, you can use USB to 485 to connect to the computer,

and use the sensor configuration tool provided by our
company for configuration and testing.
This product can also be used in combination with
multiple sensors on a 485 bus. Please observe the "485 bus
field wiring code" (see Appendix) when combining 485 buses.

In theory, one bus can connect more than 16 485 sensors. If
you need to connect more 485 sensors, you can use a 485
repeater to expand more 485 devices. The other end is
connected to a PLC with a 485 interface and a 485 interface
chip. Connect to a single chip microcomputer, or use USB to
485 to connect to a computer. Use the sensor configuration
tool provided by our company for configuration and testing.

II INSTRUCTIONS

2.1 Equipment inspection before
installation
Please check the equipment list before installing the
equipment:
Name
Number
THE SENSOR DEVICE
1
12V POWER ADAPTER（Optional）
1
WARRANTY CARD / CERTIFICATE
1
THE USB TO 485 DEVICE（Optional）
1
2.2 Interface description
The power interface can be 12-24V for wide voltage

power supply. When wiring the 485 signal line, pay attention
that the two A / B lines cannot be reversed, and the addresses
between multiple devices on the bus must not conflict.
Line Color
Description
Power
Brown
Power supply Positive ( 12-24V DC )
Black
Power supply Negative
Communication
Yellow ( Gray )
485-A
Blue
485-B

Note: Please be careful not to connect the wrong wire
sequence, the wrong wiring will cause the equipment to burn
out.
The factory provides 1.25 meters long wire by default, and
the customer can extend the wire as required or connect the
wires sequentially.
Note that there may not be a yellow line in the line order
that may be provided in some factory batches. At this time,
the gray line is equivalent to replace the yellow line.
2.3 Measurement method
The factory default product is suitable for measuring
ordinary yellow, black, and red land. It is not suitable for

absolute moisture measurement in saline-alkali land, sandy
land, or other powder objects with large salinity. The single
can still characterize the relative moisture difference. For this
type of moisture measurement, the manufacturer should be
contacted for a separate calibration.
(1) Quick test method
Select a suitable measurement location, avoid stones, and
ensure that the steel needle does not touch hard objects.
Discard the topsoil according to the required measurement
depth, keep the original tightness of the soil below, hold the
sensor vertically into the soil, and insert It is not allowed to
shake left and right, it is recommended to measure multiple

times to find the average value within a small range of one
measurement point. ,
(2) Buried measurement method
Dig a pit with a diameter> 20cm vertically, insert the steel
needle of the sensor horizontally into the pit wall at a
predetermined depth, and bury the pit tightly. After stable for
a period of time, you can measure and record for several days,
months or longer.
2.4 matters needing attention
1. All steel needles must be inserted into the soil during
measurement.
2. Avoid direct sunlight on the sensor and cause the

temperature to be too high. Pay attention to lightning
protection in the field.
3. Do not bend the steel needle violently, do not pull the
sensor lead wire with force, and do not beat or violently hit the
sensor.
4. The protection grade of the sensor is IP68, which can
soak the sensor in water.
5. Due to the presence of radio frequency electromagnetic
radiation in the air, it should not be energized in the air for a
long time.

III CONFIGURATION
SOFTWARE INSTALLATION
AND USE
Our company provides matching "sensor monitoring
software", which can conveniently use a computer to read the
parameters of the sensor, and at the same time flexibly modify
the device ID and address of the sensor.
3.1 sensor connected to computer
After correctly connecting the sensor to the computer via
USB to 485 and providing power, you can see the correct COM
port in the computer (see the COM port in "My

Computer-Properties-Device Manager-Port").
As shown in the figure above, your serial number is
COM10 at this time, please remember this serial port, you
need to fill in this serial number in the sensor monitoring
software.
If the COM port is not found in the device manager, it
means that you have not plugged in the USB to 485 or the

driver is not installed properly. Please contact a technician for
help.
3.2 Use of sensor monitoring software
The software interface is shown in the figure:
After opening the software, first select the "Sensor Type"
at the top of the software, then obtain the serial port number
according to the method in section 3.1 and select the correct

serial port, then click "Automatically obtain the current baud
rate and address" to automatically detect the current 485 bus
On all devices and baud rates. Please note that when using
software to obtain automatically, you need to ensure that
there is only one sensor on the 485 bus. Then click "Connect
Device" to get sensor data information in real time.
3.3 Modify the baud rate and device
address
In the case of disconnecting the "device connection", click
"Modify the baud rate and modify the slave station number"
in "Configure sensor communication parameters" to complete
the relevant settings. Please note that please restart the device

after setting, and then "automatically obtain the current Baud
rate and address ", you can find that the address and baud
rate have been changed to the address and baud rate you
need
IV COMMUNICATION
PROTOCOLS
4.1 Basic communication parameters
PARAMETERS
CONTENT
Coding
8-bit binary
Data bit
8-bit
Parity bit
no
Stop bit
1 person
Error
CRC (Redundant Cyclic Code)