DEVICE DETERMINING LEAKS OF EXPLOSIVE LIQUIDS BASED ON PIEZOELECTRIC SENSOR Russian patent published in 2015 - IPC G01N27/12 

FIELD: instrumentation.

SUBSTANCE: scope of application: for continuous leaks check of the explosive liquids (including the organic solvents, ammonia, kerosene, gasoline) and generation of the sound or light signal upon the concentrations rise of the liquid vapours in air of rooms, closed spaces (underground facilities and services), and at outdoor installations. The invention essence is that the device with open input to check leaks of the explosive liquids based on the poiezoelectric sensor contains a frequency meter with function of the continuous rate measurement of the analytical signal change with step τ = 10 s (ΔF/Δτ, Hz/s) of one piezoelectric sensor with stable and sensitive coating of the electrodes; signal light or sound device activated upon jump-like rise of change rate of the analytical signal due to quick rise of the liquid vapours concentration in near sensor space relatively to the background value; device securing the alarm device in places of the leak monitoring; additional perforated lid secured to the detection cell bottom, that does not prevent spontaneous diffusion of vapours of the explosive liquids in the near sensor space, and prevents the piezoelectric sensor against the mechanical damages.

EFFECT: assurance of the possibility of the continuous monitoring of the explosive liquid leaks (including organic solvents, ammonia, kerosene, gasoline) and announcement using the light or sound signal on quick rise of the vapour concentration in the near sensor source relatively to the background value.

2 dwg, 2 tbl