Soil Moisture Sensor Function

Soil Moisture Sensor Function

Details
Soil moisture sensors measure the volumetric water content by FDR principle in soil.Frequency Domain Reflectometry (FDR): The dielectric constant of a certain volume element around the sensor is obtained by measuring the operating frequency of an oscillating circuit.
Category
Soil Sensors
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Description
Technical Parameters

Features

▶Principle:FDR

▶High accuracy, fast, accurate, continuous fixed-point measurement, 

▶No radioactivity and no disturbance to soil.

Specification

 

Item

Technical Specification

Range(m3/m3)

0-100%

Accuracy

±2%(0~50%(m3/m3),25℃)

Output Signal

4-20mA , RS485 optional

Response Time

<1s

Supply

 12-24VDC

Effective measurement area

90% of the influence is in the cylinder with diameter of 2.5cm and length of 6cm around the central probe

Housing

ABS

Dimensions

133*40mm(probe:60mm)

Operating Temperature

-30℃-+70℃

Ingress Protection

IP68

Storage

10-60℃@20%-90%RH

Probe material

316L stainless steel

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