# US 2014/0192834 A1 · Apparatus for calibration of temperature sensors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192834 A1 - Document ID: US20140192834A1 - Status: Published application - Kind: A1 - Application number: 14/004,025 - Filed: 2012-03-07 - Published: 2014-07-10 - Earliest claimed: 2011-03-07 - Inventors: Ole Einar Brønlund - Web page: https://patentgrep.com/patent/US20140192834A1 ## CPC - G01K 15/005: {Calibration} - G01K 15/00: Testing or calibrating of thermometers - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) ## Abstract A calibration body (140) for calibration of a temperature sensor (170). The calibration body comprises a volume (142) capable of containing a calibration fluid with a predetermined temperature and an opening (160) for receiving the temperature sensor. The opening has a flexible opening wall (131) which delimits the sensor (170) from the volume and is capable of tightly engaging the sensor (170). The opening wall (131) comprises a non-elastic wear resistant region (231) facing the opening. The non-elastic wear region (231) is connected to a path compensator (232) capable of adjusting a length of the opening wall (131) with an amount corresponding to the path around the temperature sensor (170) in the non-elastic region (231). The non-elastic region (231) can comprise a reinforced sheet material and/or a coating. An apparatus comprising the calibration body (140) and a separate pressure body (120) is also disclosed. ## Claims ### Claim 1 Calibration body for calibration of at least one temperature sensor, the calibration body comprising a volume capable of containing a calibration fluid with a predetermined temperature, an opening for receiving the temperature sensor extending from a first surface of the calibration body into the volume of the body, the opening having a flexible inner wall delimiting the sensor from the volume and capable of tightly engaging the sensor, characterised in that the inner wall comprises a non-elastic wear resistant region facing the opening, and that the non-elastic wear region is connected to a path compensator capable of adjusting a length of the inner wall with an amount corresponding to the path around the temperature sensor in the non-elastic region. ### Claim 2 (depends on 1) Calibration body according to claim 1, wherein the non-elastic region comprises a reinforced sheet material. ### Claim 3 (depends on 1) Calibration body according to claim 1, wherein the non-elastic region comprises a wear resistant coating. ### Claim 4 (depends on 1) Calibration body according to claim 1, wherein the opening is an elongated slot extending in a longitudinal direction of the calibration body. ### Claim 5 (depends on 4) Calibration body according to claim 4, wherein an end of the inner wall is fixed relative to the calibration body and the path compensator is an elastic part of the inner wall between the fixed end and the non-elastic region. ### Claim 6 (depends on 4) Calibration body according to claim 4, wherein a first end of the inner wall is fixed to a first rigid element, a second end of the inner wall is fixed to a second rigid element, the first element being displaceable relative to the second element in the longitudinal direction. ### Claim 7 (depends on 1) Calibration body according to claim 1, further comprising an inlet capable of receiving a flow of calibration fluid from a temperature controlling circuit and an outlet capable of returning the flow to the temperature controlling circuit. ### Claim 8 (depends on 7) Calibration body according to claim 7, wherein the inlet is connected to an inlet pipe extending within the volume of the calibration body. ### Claim 9 (depends on 7) Calibration body according to claim 7, wherein the outlet is connected to an outlet pipe extending within the volume of the calibration body. ### Claim 10 (depends on 8) Calibration body according to claim 8, wherein the inlet pipe has a longitudinal axis displaced from and parallel to a longitudinal inlet axis running through the inlet, and the inlet pipe being rotatable about the inlet axis. ### Claim 11 (depends on 9) Calibration body according to claim 9, wherein the outlet pipe has a longitudinal axis displaced from and parallel to a longitudinal outlet axis running through the outlet, and the outlet pipe being rotatable about the outlet axis. ### Claim 12 (depends on 9) Calibration body according to claim 9, wherein the outlet pipe is displaced relative to the outlet in a direction perpendicular to the longitudinal direction and rotatable about a longitudinal axis running through the outlet. ### Claim 13 Apparatus for calibration of at least one temperature sensor, the apparatus comprising the calibration body according to any preceding claim, wherein the calibration body further comprises a displaceable outer wall, and a pressure body capable of exerting a pressure on the displaceable outer wall. ### Claim 14 (depends on 12) Apparatus according to claim 12, wherein the calibration body is adapted to fit into a fixed space defined by the pressure body. ### Claim 15 (depends on 12) Apparatus according to claim 12, further comprising a retaining clamp capable of receiving the set of temperature sensors and being adapted to fit into a recess with fixed dimensions over the opening of the calibration body. ### Claim 16 (depends on 12) Apparatus according to claims 12, wherein the pressure body during operation maintains a residual pressure equal to or larger than the pressure at the bottom of a column of calibration fluid through the calibration body.