Described embodiment includes device, including conduit and pointed tip electrode, and the distal end of absolute atmosphere conduit is configured to limit multiple microelectrode bores. The equipment further includes the setting of at least one printed circuit board (PCB) in inner cavity and multiple microelectrodes and PCB and is positioned at least partially at the hole of microelectrode, which is configured as signal from microelectrode. Other embodiments are also described.
