Abstract: A gas sensor includes: a gas sensor cartridge; and a gas sensor body to which the gas sensor cartridge, which includes: a case that has an intake port and an exhaust port and serves as a gas sensor chamber; a gas sensor device provided inside the case; an external connection terminal provided at the case and connected to the gas sensor device; a first sealing member that seals the intake port such that the intake port is opened when the gas sensor cartridge is attached to the gas sensor body; and a second sealing member that seals the exhaust port such that the exhaust port is opened when the gas sensor cartridge is attached to the gas sensor body, is detachably attached.

Abstract: A gas sensor device includes a first electrode, a second electrode, and a polythiophene film which is formed between the first and second electrodes to be electrically coupled to the first and second electrodes, and to which cuprous bromide is adsorbed.

Abstract: A photocatalyst made of cuprous bromide, wherein the cuprous bromide expresses a photocatalytic property of decomposing a substance brought into contact with the cuprous bromide by irradiation with light.

Abstract: A gas sensor includes: a gas sensor cartridge; and a gas sensor body to which the gas sensor cartridge, which includes: a case that has an intake port and an exhaust port and serves as a gas sensor chamber; a gas sensor device provided inside the case; an external connection terminal provided at the case and connected to the gas sensor device; a first sealing member that seals the intake port such that the intake port is opened when the gas sensor cartridge is attached to the gas sensor body; and a second sealing member that seals the exhaust port such that the exhaust port is opened when the gas sensor cartridge is attached to the gas sensor body, is detachably attached.

Abstract: A gas sensor device has a crystalline film of copper(I) bromide, wherein a crystal surface of the copper(I) bromide is formed of a stepped terrace having a flat face and a steep slope.

Abstract: A detection device includes, a first electrode, a second electrode, a conductor including at least a surface portion made of gold or platinum group metal, which extends from the first electrode to the second electrode so as to make an electric conduction between the first electrode and the second electrode, and a p-type semiconductor provided between the surface portion of the conductor and at least one of the first electrode and the second electrode so as to make an electric connection between the surface portion of the conductor and at least one of the first electrode and the second electrode.

Abstract: A sensor device includes a first electrode and a second electrode disposed over a substrate, and a sensitive film including a base film which couples the first electrode and the second electrode to each other and contains Cu and a halogen element and PEDOT/PSS which bonds to the base film.

Abstract: A gas sensor device includes a first electrode, a second electrode, and a polythiophene film which is formed between the first and second electrodes to be electrically coupled to the first and second electrodes, and to which cuprous bromide is adsorbed.

Abstract: A gas sensor device has a crystalline film of copper(I) bromide, wherein a crystal surface of the copper(I) bromide is formed of a stepped terrace having a flat face and a steep slope.

Abstract: A gas analyzer including: a chamber; a first gas sensor provided in the chamber and including a first gas sensitive member; a second gas sensor provided in the chamber and including a second gas sensitive member; and a detector that detects each of resistance changes of the first and the second gas sensitive members; wherein the first gas sensitive member is an oxide semiconductor mainly composed of at least one of Sn, W, Zn and In or a semiconductor mainly composed of C, and the second gas sensitive member is mainly composed of a halide or an oxide of Cu or Ag.

Abstract: A gas sensor device includes: a sensor film including a sensor surface and a resistance which increases with an increase in an amount of gas adsorbed on the sensor surface; a first electrode, a second electrode, and a third electrode that are electrically coupled to the sensor film; and a protective film that covers the sensor surface in a region between the first electrode and the second electrode, wherein the sensor surface is exposed in a region near the third electrode.

Abstract: A water amount measurement device includes a light emitting element to emit light, a light receiving element to receive the light reflected by a liquid surface and by a liquid bottom at a bottom surface within a pipeline, a storage to store a distance from the light emitting element to the liquid bottom, and a processor. The processor computes a water level of the liquid flowing through the pipeline according to different formulas depending on whether a comparison result of distance data obtained based on an output signal of the light receiving element, and the distance at a time of measurement, includes a component corresponding to a distance exceeding the distance generated by the reflection from the liquid bottom, or the comparison result includes a component corresponding to a distance less than the distance generated by the reflection from the liquid surface.

Abstract: A measurement device includes a first flow passage, a heating unit provided on one end side of the first flow passage, a gas detection unit provided on one end side of the first flow passage and capable of detecting a gas through heat applied from the heating unit, and a particle measurement unit which optically measures, at an upper side than the heating unit of the first flow passage, particles passing through the first flow passage.

Abstract: In a QCM sensor and a method of manufacturing the same, the QCM sensor includes: a quartz plate; and an electrode provided on one and the other principal surfaces of the quartz plate, in which the electrode is provided with a pattern having a contour line in a planar view of the electrode.