RK500-23 Soil EC Sensor & Soil Salinity Sensor


The probe of RK500-23 EC/Salinity sensor is made of titanium alloy inner electrode, using tetrafluoroethylene lining,outerelectrode is 316L stainless steel, it has the characteristics of stable performance, high sensitivity and wide application range.RK500-23 is simple in structure, stable in performance and easy to operate. It is used for on-site monitoring of soil water-saltdynamics. lt is an ideal observation instrument for studying the occurrence, evolution and improvement of saline-alkaline soil.


  • Fast response.
  • Excellent stability.
  • Widely used.
  • High precision.
  • High sensitivity.
  • Simple operation.


Item Technical Specification
EC Salinity
Measuring medium Soil or similar to soil
Principle Frequency conversion method
Range  0~1000us/cm, 0~2000us/cm,0~5000us/cm,0~10000us/cm,0~200ms/cm,(any range of 0-300ms/cm can be customized, 1ms/cm = 1000us/cm) 0~100000ppm(mg/L)
Supply 7-30VDC(power consumption<0.2W)
Accuracy ±1%
Response time 1s
Output signal 4-20mA & RS485 at the same time
Electrode Titanium alloy
Temperature compensation Automatic compensation
Drift ≤0.3%FS/24h
Operating temperature -20℃-+80℃
Probe material 316L
Probe dimension Φ13*175mm
Ingress protection IP68
Storage 10-60℃@20%-90%RH
Cable length Default:5m

Product Dimensions

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