Humidity meter
AssigneeTDK Corporation
InventorsTsutomu Kotani, Shiro Nakagawa
Life of this patent
Estimating the term…
Abstract
A humidity meter has a housing (1) which has a separated sensor room (5) recessed in said housing (1) for securing a humidity sensor assembly (3). The humidity meter also has an electronic circuit (2) mounted on a printed circuit board (21) fixed in said housing (1), for processing humidity signal supplied by said humidity sensor assembly (3). Some examples of the process are analog-digital conversion of measured humidity signal, visible indication on a display screen, and/or interface with external circuit. Said humidity sensor assembly (3) is removably fixed on said printed circuit board (21) which doubles as a bottom wall (53) of said sensor room (5).
Claims8
A humidity meter comprising;
- a housing (1) having an inner space and a recessed sensor room (5) isolated from said inner space, said sensor room (5) having an open window,
- a humidity sensor assembly (3) secured in said sensor room (5),
- an electronic circuit (2) secured in said inner space and mounted on only one printed circuit board (21) fixed in said housing (1), for processing a humidity signal supplied by said humidity sensor assembly (3), said printed circuit board having a plurality of socket slots,
- said sensor room (5) having a cylindrical enclosing wall (523) engaged with a frame (51) fixed around said window of said housing (1), said cylindrical enclosing wall (523) circumferentially enclosing said sensor room (5), and a bottom wall (53) which is part of said printed circuit board (21), so that said sensor room (5) is completely isolated from said inner space of the housing (1), and
- said humidity sensor assembly (3) being fixed on said printed circuit board (21) by a plurality of conductive pins which pass through said slots, and are coupled with said electronic circuit.
Dependencies are inferred from the claim text.