US 11,740,214 B2
Sensor and sensor module
Yosuke Akimoto, Yokohama Kanagawa (JP); Hiroki Kudo, Kawasaki Kanagawa (JP); and Hiroaki Yamazaki, Yokohama Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 16, 2021, as Appl. No. 17/176,799.
Claims priority of application No. 2020-071085 (JP), filed on Apr. 10, 2020.
Prior Publication US 2021/0318282 A1, Oct. 14, 2021
Int. Cl. G01N 33/00 (2006.01)
CPC G01N 33/0045 (2013.01) [G01N 33/0073 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A sensor, comprising:
a handhole part including an inner wall;
a sensor module provided in the handhole part, the sensor module including
a housing,
a sensor circuit provided in the housing, the sensor circuit including a gas sensor element, and
a battery configured to supply electrical power to the sensor circuit; and
a holder holding the sensor module so that a gap is formed between the inner wall and the housing and between the housing and a first member,
wherein:
the housing includes a lower part facing the first member,
the lower part includes a hole through which a gas can pass,
the holder is tubular,
an opening at a lower end portion of the holder faces the first member,
an opening at an upper end portion of the holder faces the hole, and
a cross-sectional area of the opening at the lower end portion is greater than a cross-sectional area of the opening at the upper end portion.