Dielectric loss type moisture measurement system with its output compared against a reference level

Claim 1

IN A SYSTEM FOR INDICATING THE DIELECTRIC LOSSES OF A SAMPLE UNDER TEST, THE COMBINATION COMPRISING: OSCILLATOR MEANS FOR PRODUCING AN ELECTRICAL OUTPUT; ELECTRODE MEANS CONNEXTED TO SAID OSCILLATOR MEANS TO RECEIVE SAID ELECTRICAL OUTPUT AND PRODUCE AN ELECTRICAL FIELD; MEANS FOR SELECTIVELY PASSING A SAMPLE TO BE TESTED THROUGH SAID ELECTRIC FIELD; FIRST CIRCUIT MEANS CONNECTED TO SAID OSCILLATOR MEANS FOR DERIVING A FIRST POTENTIAL PROPORTIONAL TO THE ELECTRIC CURRENT DRAWN BY SAID OSCILLATOR MEANS AND THE DIELECTRIC LOSSES OF THE SAMPLE PASSED THROUGH SAID ELECTRIC FIELD; SECOND CIRCUIT MEANS FOR DEVELOPING A SECOND POTENTIAL OF A MAGNETIC EQUAL TO THE MAGNITUDE OF SAID FIRST POTENTIAL PROPORTIONAL TO THE ELECTRIC CURRENT DRAWN BY SAID OSCILLATOR MEANS FOR A ZERO REFERENCE DIELECTRIC LOSS IN SAID SAMPLE; THIRD CIRCUIT MEANS FOR DEVELOPING A THIRD POTENTIAL INDICATIVE OF A REFERENCE SAFE LEVEL DIELECTRIC LOSS IN SAID SAMPLE; VOLTAGE RESPONSIVE MEANS; AND SWITCHING MEANS FOR SELECTIVELY CONNECTING SAID VOLTAGE RESPONSIVE MEANS BETWEEN SAID FIRST AND SECOND CIRCUIT MEANS WHEN A SAMPLE IS BEING PASSED THROUGH SAID ELECTRIC FIELD AND CONNECTING SAID VOLTAGE RESPONSIVE MEANS BETWEEN SAID THIRD CIRCUIT MEANS AND GROUND WHEN NO SAMPLE IS BEING PASSED THROUGH SAID FIELD.