Envco – Environmental Equipment

* Watershed characterization
* Vadose zone monitoring
* Plant-soil-water interaction studies

The EC-5 is a low-cost soil moisture sensor enabling those researchers on a tight budget to monitor soil moisture in multiple locations and depths. In the field, the robust design of the EC-5 allows the sensor to be pushed directly into undisturbed soil. However, the compact design of the EC-5 makes it possible to measure volumetric water content in labs and greenhouses. Factory calibrations are included for mineral soils, potting soils, rockwool, and perlite.

SPECIFICATIONS

Range:
0-100% VWC

Power:
2.5 to 5 V possible, (3 V typical)

Output:
Voltage, correlated linearly (soil) or polynomially (growing media) with VWC

Resolution:
0.1% VWC (mineral soil)
0.25% VWC (rockwool)

Measurement Time:
10 ms

Cable Length:
5 m

Temperature:
-40°C to +50°C

Dimensions:
8.9 cm x 1.8 cm x 0.7 cm

Connecor Types:
3.5 mm "stereo" plug or stripped and tinned lead wires (3)

Accuracy:
Mineral Soil:±3 % VWC, All mineral soils, up to 8 dS/m
±1 % VWC soil specific calibration, up to 8 dS/m
Rockwool: ±3% VWC, 0.5 to 8 dS/m
Potting Soil: ±3% VWC, 3 to 14 dS/m

Datalogger Compatibility (not exclusive):
Decagon: Em50, EM50R, ProCheck, ECH2O Check
Campbell Scientific: CR10X, 21X, 23X, CR1000, CR3000, etc.
Other: Any data acquisition system capable of switched 2 to 5 V excitation and single ended voltage
measurement at 12 bit or better resolution.