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KQS-SM is a multi-functional soil sensor capable of monitoring up to 8 soil parameters including soil temperature, moisture (water content), pH value, electrical conductivity, salinity, nitrogen, phosphorus and potassium. It features high precision, fast response and stable output. Less affected by soil salinity, it is suitable for various soil types. It can be buried in soil for long-term use, resistant to electrolysis and corrosion, with vacuum potting and fully waterproof design. Widely used in scientific experiments, water-saving irrigation, greenhouse cultivation, horticulture, grassland monitoring, rapid soil testing, plant cultivation, wastewater treatment, and grain storage.
Key Features
High measurement accuracy, fast response, good interchangeability
Less affected by soil salinity, suitable for various soil types
Electrodes made of specially treated stainless steel, strong impact resistance
Fully sealed, acid and alkali resistant, can be buried in soil or submerged in water for long-term monitoring
Modular design, selectable configuration, supports up to 8 soil parameters
Applications
Scientific Experiments: Multi-parameter soil monitoring in soil science research
Water-saving Irrigation: Soil parameter data for precision agriculture irrigation decisions
Greenhouse Cultivation: Real-time soil parameter monitoring in greenhouse environments
Flower and Vegetable Gardening: Soil condition monitoring in horticulture
Grassland and Pasture: Soil moisture and nutrient monitoring in pasture areas
Plant Cultivation: Soil environment recording in plant growth research
Wastewater Treatment: Related parameter detection in wastewater discharge
Grain Storage: Moisture and temperature measurement of granular materials
Technical Parameters
Item
Specification
Power Supply
DC 7－30V / DC 5V
Soil Moisture Range
0－60% (volumetric water content)
Soil Temperature Range
-40－80℃
Conductivity Range
0－20000 us/cm
Salinity Range
0－10000 mg/L
pH Range
3－10 pH
N/P/K Range
0－2000 mg/kg
Soil Moisture Accuracy
±3% (0-35%); ±5% (35%-60%)
Soil Temperature Accuracy
±0.5℃
Conductivity Accuracy
±5% (0－1000 us/cm)
Salinity Accuracy
±5% (0－500 mg/L)
pH Accuracy
±0.3 pH
N/P/K Accuracy
±2%FS (0－200 mg/kg)
Note: Data beyond the above accuracy ranges for conductivity, salinity, N/P/K may have relatively higher error, but can still be used as linear trend values.
F: Soil volumetric water content (%); T: Soil temperature (℃); I: Output current (mA); V: Output voltage (V).
Note: Only soil temperature and moisture have analog signal output; other parameters do not.
Signal Type
Moisture Formula
Temperature Formula
4-20mA
F = (I - 4) / 16 * 60
T = (I - 4) / 16 * 120 - 40
0-5V
F = V / 5 * 60
T = V / 5 * 120 - 40
Wiring
(1) If the sensor is used with the company's display instrument, connect using the sensor cable directly.
(2) For standalone sensors, refer to the actual cable label. Default wiring:
Wire Color
Voltage/Current Output
RS485
Red
Power +
Power +
Black
A+
Yellow
B-
Green
Power -
Power -
White
Analog signal (temp/moisture)
Dimensions
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .
We have been specializing... Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .
We have been specializing...
