NMC-PRO Installation Manual
29Page
WARNING! TO ENSURE INTERFERENCE AND LIGHTNING IMMUNITY, USE SHIELDED
CABLE ONLY (22 AWG MINIMUM)!
WARNING! POWER AND SIGNAL WIRES MUST BE IN SEPARATE CABLES!
4.3.2.2 Ech2o 5
• Ech2o 5 Specifications
• Ech2o 5 Installation
•
4.3.2.2.1 Ech2o 5 Specifications
• Measurement Time: 10 ms (milliseconds)
• Accuracy: at least 0.03 m3/m3 all soils, up to 8 dS/m with soil-specific calibration: ±.02 m3/m3 (±2%)
• Resolution: 0.001 m3/m3 VWC in mineral soils, 0.25% in growing media
• Power Requirements: 2.5VDC - 3.6VDC @ 10mA
• Output: 10-40% of excitation voltage (250 - 1000mV at 2500 mV excitation)
• Operating Environment: -40° to +60° C
• Range of Measurement: 0 to saturation
• Sensor Dimensions (cm): 8.9 W x 1.8 D x 0.7 L
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