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Soil Temperature Moisture Salt Sensor

Soil Temperature Moisture Salt Sensor

Model:FT-WSY485

Brand:fengtu

Soil Temperature Moisture Salt Sensor can measure the soil moisture, soil temperature and conductivity at the same time, which is a high-precision soil equipment.

Product details

1.Soil Temperature Moisture Salt Sensor Product Introduction

Soil Temperature Moisture Salt Sensor can measure the soil moisture, soil temperature and conductivity at the same time, which is a high-precision soil equipment.FT-WSY485Soil Temperature Moisture Salt Sensor has stable performance and high sensitivity. It is an important tool for observing and studying the occurrence, evolution, improvement and water-salt dynamics of saline soil. By measuring the dielectric constant of the soil, it can directly and stably reflect the true moisture content of various soils. The soil moisture sensor can measure the volume percentage of soil moisture and is a soil moisture measurement method that meets the current international standards. It is suitable for soil moisture monitoring, scientific experiments, water-saving irrigation, greenhouses, flowers and vegetables, grasslands, soil rapid testing, plant cultivation, sewage treatment, precision agriculture and other occasions.

2. Soil Temperature Moisture Salt Sensor has the following features:

(1) The three parameters of soil moisture content, electrical conductivity and temperature are integrated into one.

(2) It can also be used for the conductivity of water-fertilizer solutions, as well as other nutrient solutions and substrates.

(3) The electrodes are made of specially treated alloy materials, which can withstand strong external impact and are not easily damaged.

(4) Completely sealed, resistant to acid and alkali corrosion, can be buried in the soil or directly put into water for long-term dynamic detection.

(5) High precision, fast response, good interchangeability, and probe insertion design ensure accurate measurement and reliable performance.

Technical Parameters
Signal output type RS485 interface

Modbus Protocol

Supply voltage 3.6-30V/DC
Static power consumption 6mA@24V DC
Soil moisture range Optional range: 0-50%, 0-100%
Resolution: 0.03% within 0-50%, 1% within 50-100%
Accuracy: 2% within 0-50%, 3% within 50-100%
Conductivity range Optional range: 0-20000us/cm
Resolution: 10us/cm within 0-10000us/cm, 50us/cm within 100000-20000us/cm
Accuracy: ±3% within 0-10000us/cm; ±5% within 10000-20000us/cm
Conductivity temperature compensation Built-in temperature compensation sensor, compensation range 0-50℃
Temperature measurement range Range: -40~80℃, resolution: 0.1℃, accuracy: ±0.5℃
Measurement principle and measurement method Soil moisture FDR method, soil conductivity AC bridge method
Soil is inserted or immersed in culture solution or water-fertilizer nutrient solution for direct testing
Protection level IP68 can be used for a long time when immersed in water
Operating Environment -40~85℃
Probe material Anti-corrosion special electrode
Sealing material Black flame retardant epoxy resin
Installation Fully buried or fully inserted into the measured medium
Default cable length 2 meters, cable length can be customized as required
Connection Pre-assembled cold-pressed terminals
Dimensions 45*15*145mm
Electrode length 70mm

3. Soil Temperature Moisture Salt Sensor Wiring

model Wiring Diagram
RS485 interface type
Modbus protocol
Red (V+): Power positive
Black (G): Power ground
Yellow (T+): RS485+/A/T+
White (T-): RS485-/B/T-
Soil Temperature Moisture Salt Sensor Wiring

4. Soil Temperature Moisture Salt Sensor Dimensions, Selection and Ordering

Soil Temperature Moisture Salt Sensor Dimensions, Selection and Ordering

5. Installation and measurement of Soil Temperature Moisture Salt Sensor

Since the electrode directly measures the conductivity of soluble salt ions in the soil, the soluble ions in the soil can correctly reflect the conductivity of the soil only when the soil volume moisture content is higher than about 20%. In long-term observation, the measured value after irrigation or rainfall is closer to the actual level. If a quick test is performed, water the soil to be tested first, and then measure after the water has fully penetrated.

(1) Quick measurement method: Select a suitable measurement location, avoid stones, ensure that the electrode does not touch hard objects such as stones, dig up the topsoil according to the required measurement depth, maintain the original tightness of the soil below, hold the sensor body firmly and insert it vertically into the soil. Do not shake it back and forth or left and right during insertion to ensure close contact with the soil. It is recommended to measure multiple times within a small range of a measurement point to obtain the average.

(2) Buried measurement method: According to the required depth, dig a pit with a diameter greater than 20 cm vertically, and the depth is based on the measurement requirements. Then, insert the sensor steel needle horizontally into the pit wall at the predetermined depth, fill and compact the pit, and ensure that the electrode is in close contact with the soil. After a period of stability, continuous measurement and recording can be carried out for several days, months or even longer.

If measuring on a hard surface, you should first drill a hole (the hole diameter should be smaller than the probe diameter), then insert it into the soil and compact the soil before measuring; the sensor should be protected from severe vibration and impact, and should not be hit with hard objects. Since the sensor is packaged in black, it will heat up rapidly under strong sunlight (up to 50°C). In order to prevent excessive temperature from affecting the temperature measurement of the sensor, please pay attention to sunshade and protection when using it in the field or outdoors.

6. Soil Temperature Moisture Salt Sensor soil conductivity, temperature and output conversion

model Parameter range Conversion relationship
RS485 interface
Modbus protocol
Corresponding moisture content 0-100% Moisture content = moisture content memory value / 100. If the data read is 2013, then the moisture content = 2013/100 = 20.13%.
Corresponding temperature -40-80℃ Temperature = temperature register value / 100. If the data read is 2013, then temperature = 2013/100 = 20.13℃.
Corresponding conductivity Conductivity = conductivity register value. If the data read is 1568, then conductivity = 1568us/cm.



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