DEVICE FOR INDICATING BRAND OF AUTOMOBILE GASOLINE Russian patent published in 2006 - IPC G01N27/22 

FIELD: technology for controlling oil products.

SUBSTANCE: indicator contains active oscillator, capacity indicator with thermal resistor, scaling amplifier. To output of scaling amplifier commutating cascades are connected. Number of cascades equals number of controlled gasoline brands. Each cascade consists of two-level comparator, logical circuit based on AND-NOT elements. As indicators, light diodes are connected to output of each commutating cascade. Switch is included in circuit of indicator between power source, active oscillator, capacity indicator and scaling amplifier. To one of switch outputs resistor is connected, to which circuit is connected consisting of serially connected amplifier, one-level comparator and light diode. Resistor is serially connected to capacity indicator and is in parallel connection with amplifier input.

EFFECT: increased reliability of gasoline brand indication by dielkometric method and increased information about gasoline quality, in particular, about presence of side admixtures, included in governmental standard, but exceeding allowed value.

1 tbl, 1 dwg