Alpha particle counter and integrating circuit arrangement

Claim 1

A MONITOR FOR MEASURING OUTPUTS FROM A PROBE, SAID MONITOR COMPRISING AN ELECTRICAL CIRCUIT INCLUDING A TRIGGER FOR RECEIVING SIGNALS FROM THE PROBE AND CONVERTING THEM TO PULSES OF EQUAL MAGNITUDES, A METER, CIRCUIT CONNECTIONS BETWEEN THE TRIGGER AND THE METER TO ADVANCE THE READING ON THE METER IN PROPORTION TO THE NUMBER OF PULSES DELEVERED BY THE TRIGGER, AN ALARM SIGNAL UNDER CONTROL OF DELIVERED BY THE TRIGGER, AN ALARM SIGNAL UNDER CONTROL OF PREDETERMINED VALUE, A TIMING MOTOR AND CIRCUIT CONNECTIONS OPERATED THEREBY TO DISCONNECT THE CONNECTIONS BETWEEN THE TRIGGER AND THE METER, MEANS CAUSING SAID ALRAM SIGNAL TO OPERATE WHEN THE COUNT ON THE METER REACHES THE PREDETERMINED VALUE PRIOR TO THE TIMING MOTOR OPERATING TO DISCONNECT SAID CONNECTIONS, A SAFE SIGNAL, AND CIRCUIT CONNECTIONS UNDER CONTROL OF THE TIMER TO OPERATE SAID SAFE SIGNAL WHEN THE METER DOES NOT REACH THE PREDETERMINED VALUE PRIOR TO THE TIMING MOTOR DISCONNECTING SAID CONNECTIONS.