EP0189882A2
Expired / Lapsed
EP
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Apparatus for thermal analysis
Assignee: Shimadzu Corp
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Filing: 1986-01-27
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Granted: —
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Expires: 2006-01-27
Abstract
Abstract An apparatus for thermal analysis comprising: a heating furnace, a detector for detecting the physical properties of a sample placed in the furnace, an A/D converter for converting the value detected by the detector to a digital signal, data memory means for storing the digital detected value, temperature program memory means having stored therein temperature conditions for the heating furnace, calculating means for calculating and delivering a temperature control value for the heating furnace by comparing the temperature detected by the detector with a target value in a specified program included in the temperature control conditions, a D/A converter for converting the output signal from the calculating means to an analog signal, a temperature controller for controlling the supply of current to the heating furnace in accordance with the output signal from the D/A converter, an interface connected to the data memory means and the temperature program memory means for feeding out data read therefrom, and instruction set judging means for judging instructions received by the interface for permitting data to be read from the data memory means and the temperature program memory means and to be delivered to the interface with timing that will not influence thermal analysis measurement, which relates to an apparatus for thermal analysis for measuring the properties of samples while varying the temperature thereof, the apparatus further being capable of feeding measurement data and measuring condition data to an analysis data control system for collecting and processing analysis data.
Inventors
- 👤 Michio Maruta
- 👤 Mitsumasa Shofuso Minami 36-Goshitsu Uchiike
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:31
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/48; G01N25/4806; G01N25/4846
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
1 . An apparatus for thermal analysis comprising: a heating furnace, a detector for detecting the physical properties of a sample placed in the furnace, an A/D converter for converting the value detected by the detector to a digital signal, data memory means for storing the digital detected value, temperature program memory means having stored therein temperature conditions for the heating furnace, calculating means for calculating and delivering a temperature control value for the heating furnace by comparing the temperature detected by the detector with a target value in a specified program included in the temperature control conditions, a D/A converter for converting the output signal from the calculating means to an analog signal, a temperature controller for controlling the supply of current to the heating furnace in accordance with the output signal from the D/A converter, an interface connected to the data memory means and the temperature program memory means for feeding out data read therefrom, and instruction set judging means for judging instructions received by the interface for permitting data to be read from the data memory means and the temperature program memory means and to be delivered to the interface with timing that will not influence thermal analysis measurement.
Claim 2
Dependent Claim
202 words
1 . An apparatus for thermal analysis comprising: a heating furnace, a detector for detecting the physical properties of a sample placed in the furnace, an A/D converter for converting the value detected by the detector to a digital signal, data memory means for storing the digital detected value, temperature program memory means having stored therein temperature conditions for the heating furnace, calculating means for calculating and delivering a temperature control value for the heating furnace by comparing the temperature detected by the detector with a target value in a specified program included in the temperature control conditions, a D/A converter for converting the output signal from the calculating means to an analog signal, a temperature controller for controlling the supply of current to the heating furnace in accordance with the output signal from the D/A converter, an interface connected to the data memory means and the temperature program memory means for feeding out data read therefrom, and instruction set judging means for judging instructions received by the interface for permitting data to be read from the data memory means and the temperature program memory means and to be delivered to the interface with timing that will not influence thermal analysis measurement.
Claim 3
Independent Claim
277 words
An apparatus for thermal analysis comprising: a plurality of heating furnaces, a detector provided for each of the furnaces for detecting the physical properties of a sample in the furnace, an A/D converter for converting the value detected by the detector to a digital signal, data memory means for storing the digital detected value, temperature program memory means having stored therein temperature control conditions for the heating furnaces, calculating means for calculating and delivering a temperature control value for the heating furnace by comparing the temperature detected by the detector with a target value in a specified program included in the temperature control conditions, a D/A converter for converting the output signal from the calculating means to an analog signal, a temperature controller provided for each of the heating furnaces for controlling the supply of current to the furnace in accordance with the corresponding output signal from the D/A converter, an interface connected to the data memory means and the temperature program memory means for feeding out data read therefrom, instruction set judging means for judging instructions received by the interface for permitting data to be read from the data memory means and the temperature program memory means and to be delivered to the interface with timing that will not influence thermal analysis measurement, a first signal selector provided between the detectors of the heating furnaces and the A/D converter for connecting the A/D converter selectively to the detector of one of the furnaces, and a second signal selector provided between the D/A converter and the temperature controllers of the heating furnaces for connecting the D/A converter selectively to the temperature controller of one of the furnaces.
Claim 4
Independent Claim
277 words
An apparatus for thermal analysis comprising: a plurality of heating furnaces, a detector provided for each of the furnaces for detecting the physical properties of a sample in the furnace, an A/D converter for converting the value detected by the detector to a digital signal, data memory means for storing the digital detected value, temperature program memory means having stored therein temperature control conditions for the heating furnaces, calculating means for calculating and delivering a temperature control value for the heating furnace by comparing the temperature detected by the detector with a target value in a specified program included in the temperature control conditions, a D/A converter for converting the output signal from the calculating means to an analog signal, a temperature controller provided for each of the heating furnaces for controlling the supply of current to the furnace in accordance with the corresponding output signal from the D/A converter, an interface connected to the data memory means and the temperature program memory means for feeding out data read therefrom, instruction set judging means for judging instructions received by the interface for permitting data to be read from the data memory means and the temperature program memory means and to be delivered to the interface with timing that will not influence thermal analysis measurement, a first signal selector provided between the detectors of the heating furnaces and the A/D converter for connecting the A/D converter selectively to the detector of one of the furnaces, and a second signal selector provided between the D/A converter and the temperature controllers of the heating furnaces for connecting the D/A converter selectively to the temperature controller of one of the furnaces.
Claim 5
Dependent Claim
76 words
An apparatus as defined in claim 1 wherein the detector comprises a differential thermal analyzer for detecting the temperature of the sample, a thermobalance and a DTA-TG simultaneous measuring instrument for measuring the weight of the sample, a dilatometer for measuring the length of the sample, a differential scanning calorimeter for measuring the quantity of heat of the sample, or a differential thermal analyzer for measuring the temperature difference between the sample and a reference sample.
Claim 6
Dependent Claim
76 words
An apparatus as defined in claim 2 wherein the detector comprises a differential thermal analyzer for detecting the temperature of the sample, a thermobalance and a DTA-TG simultaneous measuring instrument for measuring the weight of the sample, a dilatometer for measuring the length of the sample, a differential scanning calorimeter for measuring the quantity of heat of the sample, or a differential thermal analyzer for measuring the temperature difference between the sample and a reference sample.
References Cited (Backward Citations)
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