Campbell Scientific EasyAG Probe for Soil Volumetric Water Content Profiles - Manual (Page 8)

EasyAG ® Soil Water Content Profile Probes
6. Specifications
Feature EasyAG ®
SDI-12
Maximum cable length to
logger or third party device 60 m (200 ft)*
Maximum sensors per standard
probe 4
Sensor Measuring Principle High frequency capacitance
Output Options SDI-12
Protocol options SDI-12
Interface Measuring Principle 16 Bit pulse count
Output Resolution 16 Bit
Output Method Serial data
Current Consumption 250 µA @ Sleep
66 mA @ Standby
100 mA @ Sampling
Reading range Water Content/Salinity
0 to ~65%/0 to 17 dSm
-1
Temperature effects ±3% 5°C to 35°C
Operating temperature range -20°C to +75°C
Time to read one sensor 1.1 seconds
Sphere of influence 99% of the reading is taken within a 10 cm
radius from the outside of the access tube
Sensor diameter 26.5 mm
Access tube diameter 32 mm
Probe length 50 cm (20 inches)
* Based on SENSDI12CBL-L cable.
4