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Substrate moisture sensor

Measure the water content, electrical conductivity, and temperature of many types of growing media, primarily in greenhouse applications.

Specifications

Volumetric Water Content

Accuracy:

Generic calibration: ±0.03 m3/m3 (±3.00% VWC) typical in mineral soils that have solution EC <8 dS/m
Medium specific calibration: ±0.01–0.02 m3/m3 (±1–2% VWC) in any porous medium
Apparent dielectric permittivity (εa): 1–40 (soil range) , ±1 εa (unitless) 40–80, 15% of measuremention, +/- 0.01 to 0.02 m( +/-1 to 2% VWC) in any porous medium

Resolution:

0.001 m3/m3

Range:

Mineral soil calibration: 0.00–0.70 m3/m3
Soilless media calibration: 0.0–1.0 m3/m3
Apparent dielectric permittivity (εa): 1 (air) to 80 (water)

Bulk Electrical Conductivity

Accuracy: +/- (5% +0.01 dS/m) from 0 to 10 dS/m
+/- 8% from 10 to 20 dS/m
Resolution: 0.001 dS/m
Range: 0 to 20 dS/m (bulk)

Temperature

Range: −40 to 60 °C
Resolution: 0.1 °C
Accuracy: ±0.5 °C from −40 to 0 °C ±0.3 °C from 0 to +60 °C

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