ION COUNTER IN GAS ATMOSPHERE Russian patent published in 1999 - IPC

FIELD: meteorology, health services. SUBSTANCE: ion counter has instrument capacitor, electrometer and electric capacitor. Capacitance of electric capacitor is chosen in agreement with system of inequalities , where C is capacitance of electric capacitor; t_c is specified period of continuous measurement on upper measurement limit of ion current of counter; R is insulation resistance between leads-out of electric capacitor; ΔU_per - is largest permissible drop of absolute value of rated voltage across instrument capacitor; I_up is value of upper measurement limit of ion current of counter; R_e is input resistance of electrometer; U₀- is value of rated voltage across instrument capacitor. Technical result of given invention consists in that drop of absolute value of rated voltage across instrument capacitor does not exceed most permissible value with ion current of I_up in the course of period t_c. EFFECT: enhanced operational reliability of ion counter. 2 dwg, 1 tbl