Electric measuring device for mixed fluid temperature and velocity

Claim 1

AN ELECTRIC MEASURING DEVICE FOR DETECTING THE VARIATION OF THE EXACT AVERAGE TEMPERATURE OF FLUID MIXTURES HAVING TWO BRANCH CONDUITS FOR THE PASSAGE OF SAID FLUIDS WITH MEANS PROVIDED TO PRODUCE ANY DESIRED PROPORTION OF THE VOLUMES OF SAID RESPECTIVE FLUID STREAMS FLOWING THEREINGS LEADING THERETO, COMPRISING IN COMBINATION, A TRANSINGS LEADING THERETO, COMPRISING IN COMBINATION, A TRANSFORMER HAVING A PRIMARY COIL AND TWO SECONDARY COILS, SAID PRIMARY COIL BEING ASSOCIATED WITH A SOURCE OF ALTERNATING CURRENT POWER, TOW BALANCEABLE COMPONENT BRIDGE CIRCUITS EACH OF WHICH HAVING A PAIR OF INPUT AND A PAIR OF OUTPUT TERMINALS, EACH OF SAID SECONDARY COILS BEING CONNECTED TO THE INPUT TERMINALS OF SAID RESPECTIVE BRIDGE CIRCUITS AND DIRECT CONDUCTIVE CONNECTION BETWEEN SAID OUTPUT TERMINALS OF EACH COMPONENT BRIDGE AND THE OUTPUT CIRCUITS AND THE SUCEEDING COMPONENT BRIDGE TO FORM A SERIES OF BALANCEABLE BRIDGE NETWORK, A SEPARATE ADJUSTABLE POTENTIOMETER RESISTOR IN SERIES WITH EACH OF THE SECONDARY SUPPLY CIRCUITS EACH HAVING AN ADJUSTABLE TAP CONNECTED TO ONE OF SAID INPUT TERMINALS FOR INDEPENDENTLY VARYING THE ELECTRICAL VOLTAGE DELIVERED TO THE ARMS OF EACH OF SAID BRIDGE CIRCUITS CONTROLLING THE RELATIVE EFFECTIVENESS OF THE RESPECTIVE BRIDGES IN SERIES, A FIRST TEMPERATURE SENSITIVE RESISTANCE ELEMENT LOCATED IN EACH OF SAID BRANCH CONDUITS AND CONNECTED TO ONE ARM OF SAID FIRST AND SECOND COMPONENT BRIDGE CIRCUITS AND VARIABLE IN RESPONSE TO VARIATION IN TEMPERATURE OF THE FLUID FLOWING THEREOVER, A FIRST FLOW SENSITIVE RESISTOR ELEMENT LOCATED IN EACH OF SAID BRANCH CONDUITS AND CONNECTED IN THE OPPOSED ARM OF SAID FIRST AND SECOND COMPONENT BRIDGE CIRCUITS HEATED TO A PREDETERMINED HIGHER TEMPERATURE THAN THAT OF FLUID BEING RESPECTIVELY EXPOSED TO THE MOTION OF FLUID IN SAID RESPECTIVE BRANCH CONDUITS AND CONTROLLED BY THE RATE OF COOLING PROPORTIONAL TO THE VARIATION IN FLOW RATE, A SECOND TEMPERATURE RESPONSIVE RESISTANCE ELEMENT OF SIMILAR RESISTANCE CHARACTERISTIC TO THAT OF THE FIRST FLOW SENSITIVE RESISTOR ELEMENT LOCATED IN EACH OF SAID BRANCH CONDUITS AND CONNECTED TO AN ADJACENT ARM OF SAID FIRST AND SECND BRIDGE CIRCUITS TO COMPENSATE FOR THE CHANGE IN FLUID TEMPERATURE FROM A PREDETERMINED STANDARD VALVE FOR SECURING A CORRECT RESPONSE OF SAID FIRST FLOW SENSITIVE RESISTOR ELEMENT IRRESPECTIVE OF FLUID TEMPERATURE VARIATION, THE OPERATION OF SAID FIRST FLOW SENSITIVE RESISTOR ELEMENT IN SAID BRIDGES INTRODUCE A CORRECTIVE BIAS VOLTAGE ON THE RESULTANT UNBALANCED VOLTAGE IN STRICT CORRESPONDENCE WITH THE VARIATION IN FLOW RATE OF THE RESPECTIVE FLUID STREAMS TO WHICH THEY ARE SUBJECTED, A SEPARATE SECOND FLOW SENSITIVE RISISTOR ELEMENT OF SIMILAR TEMPERATURE RESISTANCE CHARACTER LOCATED IN EACH OF SAID BRANCH CONDUITS TO EXPOSED TO SAID RESPECTIVE FLOWS IN MOTION BEING RESPONSIVE TO SAID CHANGES IN FLOW RATE AND CONNECTED IN THE CURRENT SUPPLY CIRCUITS OF SAID FIRST AND SECOND BRIDGE CIRCUIT SUPPLY THE CURRENT FLOW THROUGH SAID FIRST FLOW SENSITIVE RESISTOR ELEMENT TO COMPENSATE FOR ITS NON-LINEAR RESPONSE TO CHANGE IN FLOW RATE OR RATE OF COOLING, TWO POTENTIOMETER TYPE VARIABLE RESISTORS CONNECTED IN THE ADJACENT ARM OF EACH OF SAID BRIDGE CIRCUITS TO ADJUST THE INITIAL BALANCE TO ANY PREDETERMINED STANDARD CONDITION OF TEMPERATURE AND FLOW RATE OF BOTH SAID FLUIDS, ONE FIXED NON-RESPONSIVE RESISTOR ELEMENT CONNECTED IN EACH OF THE FOURTH ARM OF AND BRIDGE CIRCUIT, THE SAID TWO CONDITION RESPONSIVE ELEMENTS IN BOTH SAID BRANCH CONDUITS CONTROLLING THE RESULTANT UNBALANCE POTENTIAL ON THE OUTPUT TERMINALS OF SAID SERIES BRIDGE NETWORK IN ACCORDANCE WITH THE AVERAGE TEMPERATURE OF THE FLUID STREAMS IN BOTH SAID BRANCH CONDUITS, SAID UNBALANCE POTENTIAL REPRESENTING A CONDITION WHEN THE AVERAGE TEMPERATURE OF THE FLUID MIXTURE DEPARTS FROM A PREDETERMINED STANDARD VALUE, AND INCLUDING MEANS FOR INDICATING THE DEGREE OF UNBALANCE PRODUCED BY THE RESULTANT RESISTANCE CHANGES OF THE RESPECTIVE MEASURING ELEMENTS IN SAID SERIES BRIDGE NETWORK, THEREBY TO OBTAIN AND EXACT MEASUREMENT OF THE AVERAGE TEMPERATURE OF THE FLUID MIXTURE IRRESPECTIVE OF THE THROUGHNESS OF THE MIXING OF BOTH SAID FLUID STREAMS IN SAID MIXING CHAMBER.