The use of a.c. resistance-type sensors with a d.c. data logging system

Abstract By inserting on preselected channels a 50 hertz a.c. conductivity meter between system scanner and voltmeter, a.c. resistance-type sensors for soil water content and other variables can be made compatible with a d.c. automatic data logging system, since adequate matching can be achieved between response curves of most of such sensors and the reciprocal resistance response of the conductivity meter.