| abstract |
An oxygen concentration measuring device having a very small size detecting portion (S) formed of unitary lamination of plate shaped members (59,40,42,43,49,50,60) comprising an oxygen sensing element, a heater member and/or a temperature detecting member. The detecting portion is provided with a printed contact terminal (M) and housed in a probe equipped with a protecting tube. The printed contact terminal of the detecting portion is arranged to mate with a connecting element housed in a funnel-shaped contact member so as to allow easy mounting and detaching. |