Pyrometer
First Claim
Patent Images
1. A radiation thermometer, comprising:
- an infrared-ray sensor for measuring a quantity of infrared rays irradiated from an object being measured,sensor-temperature measuring unit to measure a temperature of the infrared-ray sensor,a probe receiving therein the infrared-ray sensor and the sensor-temperature measuring unit and said probe is inserted into an opening, andtemperature calculating unit to calculate a temperature of the object being measured, on the basis of a quantity of infrared rays irradiated from the object being measured, and a temperature of the infrared-ray sensor;
said temperature calculating unit comprising representative temperature presuming unit to presume a temperature of the infrared-ray sensor or information of a temperature representative of any one of members constituting the probe in conformity to thermal time constants peculiar to the respective members from heat conducted to the infrared-ray sensor and the members by a heat source in the vicinity of an outer wall of the probe; and
a temperature difference information presuming unit to calculate at least either of a phase lead component or a phase lag component of results of measurement of the sensor-temperature measuring unit in conformity to thermal time constants of the members present on a heat conduction path passing through the sensor-temperature measuring unit to presume a temperature difference information between the sensor-temperature measuring unit and the infrared-ray sensor and the members.
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Accused Products
Abstract
A first thermistor 8 and a second thermistor 9 are arranged forwardly and rearwardly of a thermopile sensor 5. A thermopile chip 55 is arranged and interposed between the first thermistor 8 and an integrated thermistor 57. A sensor cover is mounted in contact with front and side portions of a can portion 59 of a thermopile casing 56. A temperature or a radiant quantity of infrared rays on the front portion of the can portion is estimated from a temperature change of the integrated thermistor per second.
47 Citations
7 Claims
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1. A radiation thermometer, comprising:
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an infrared-ray sensor for measuring a quantity of infrared rays irradiated from an object being measured, sensor-temperature measuring unit to measure a temperature of the infrared-ray sensor, a probe receiving therein the infrared-ray sensor and the sensor-temperature measuring unit and said probe is inserted into an opening, and temperature calculating unit to calculate a temperature of the object being measured, on the basis of a quantity of infrared rays irradiated from the object being measured, and a temperature of the infrared-ray sensor; said temperature calculating unit comprising representative temperature presuming unit to presume a temperature of the infrared-ray sensor or information of a temperature representative of any one of members constituting the probe in conformity to thermal time constants peculiar to the respective members from heat conducted to the infrared-ray sensor and the members by a heat source in the vicinity of an outer wall of the probe; and a temperature difference information presuming unit to calculate at least either of a phase lead component or a phase lag component of results of measurement of the sensor-temperature measuring unit in conformity to thermal time constants of the members present on a heat conduction path passing through the sensor-temperature measuring unit to presume a temperature difference information between the sensor-temperature measuring unit and the infrared-ray sensor and the members. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification