Campbell HydroSense II Manuel d'instructions télécharger pdf (Page 5)

HydroSense

1. General Description

FIGURE 1-1. HydroSense display unit and probe with 12 cm rods.

1.1 Introduction

The HydroSense Soil Water Content Measurement System provides a simple

and portable means to measure soil water content. Two modes of operation

allow the display of volumetric water content in percent or relative water

content based on lower and upper reference values chosen by the user. The

relative water content is complemented by deficit values showing how much

water is required to bring water content to the upper reference value.

The combined probe and display weight is approximately 600 gm (1.3 lb).

Two alkaline AAA batteries in the handheld display provide enough power for

several thousand readings. A measurement is made by fully inserting the probe

rods into the soil and pressing a READ button and takes less than one-half

second. To save power, HydroSense automatically goes into sleep mode after

approximately two minutes of inactivity.

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Campbell HydroSense II Manuel d'instructions Page 5