Abstract: A display and operating unit and a main unit are connected with the ability to be separated. In a state with the connection with the main unit separated, the display and operating unit is attached to the front surface side of a panel. In this case, the connector cable is passed through an opening formed on the panel and positioned at the back surface side of the panel, and packing is positioned so as to enclose the periphery of the opening, and the display and operating unit is attached to the front surface side of the panel. Then, the main unit is fixed to the back surface side of the panel, a connector CN1 of the tip end of the connector cable is engaged with a connector of the main unit, and the display and operating unit and the main unit are connected.

Abstract: A display and operating unit and a main unit are connected with the ability to be separated. In a state with the connection with the main unit separated, the display and operating unit is attached to the front surface side of a panel. In this case, the connector cable is passed through an opening formed on the panel and positioned at the back surface side of the panel, and packing is positioned so as to enclose the periphery of the opening, and the display and operating unit is attached to the front surface side of the panel. Then, the main unit is fixed to the back surface side of the panel, a connector CN1 of the tip end of the connector cable is engaged with a connector of the main unit, and the display and operating unit and the main unit are connected.

Abstract: A printed board connecting structure including a first printed board provided with either a male or female connector as a first connector, and a second printed board provided with the other connector (the female or male connector) as a second connector, wherein the first printed board and the second printed board are connected through mating of the first connector and the second connector. The first printed board comprises a guiding hole on a board surface in the vicinity of the first connector; and the second printed board comprises a guiding protrusion for guiding the mating of the first connector and the second connector by first engaging with the guiding hole of the first printed board when the first connector and the second connector are to be mated.

Abstract: In a thermoelectric device, a thermoelectric element has one surface on a low temperature side and the other surface on a high temperature side. A member is attached to at least one of the low- and high-temperature-side surfaces of the thermoelectric element. A temperature detection element is provided between the member and the surface of the thermoelectric element to which the member is attached. A mirror surface state detection device is also disclosed.

Abstract: A cooled mirror dew-point hygrometer includes a thermoelectric cooling element, mirror, light-emitting unit, light-receiving unit, temperature detector, dew-point increase detector, and control unit. The control unit forcibly supplies a current to the thermoelectric cooling element in a direction reverse to a positive direction when the dew-point increase detector detects a rise in dew point.

Abstract: In a thermoelectric device, a thermoelectric element has one surface on a low temperature side and the other surface on a high temperature side. A member is attached to at least one of the low- and high-temperature-side surfaces of the thermoelectric element. A temperature detection element is provided between the member and the surface of the thermoelectric element to which the member is attached. A mirror surface state detection device is also disclosed.