EC-20, EC-10 and EC-5 User’s Manual
1. Introduction
1
1. Introduction
Welcome
Welcome to the EC-20, EC-10 and EC-5 sensors for
measuring soil water content. These innovative sensors
will enable you to monitor soil moisture accurately and
affordably.
Specifications
Measurement Time:
10ms (milliseconds)
Accuracy:
EC-10 and EC-20:
± .04 m
3
/m
3
(±4%) < 0.5 dS/m
With soil-specific calibration: ±.02 m
3
/m
3
(±2%)
EC-5:
at least 0.03 m
3
/m
3
all soils, up to 8 dS/m
With soil-specific calibration: ±.02 m
3
/m
3
(±2%)
Resolution:
EC-10 and EC-20:
0.002m
3
/m
3
EC-5:
0.001 m
3
/m
3
VWC in mineral soils, 0.25% in
growing media
Power:
Requirements:
EC-10 & EC-20: 2.5VDC @ 2mA to 5VDC @ 7mA
EC-5: 2.5VDC - 3.6VDC @ 10mA
Output:
10-40% of excitation voltage (250-1000mV at
2500mV excitation)
