JPH0368823A - Temperature measuring apparatus - Google Patents

Abstract

PURPOSE:To make it possible to measure the temperature distribution and the like of combustible liquid and powder in storage or during conveyance readily and safely by guiding the color change in temperature indicating material based on the temperature change in a body to be measured into a color recognizing photodetector. CONSTITUTION:Optical fibers 3 and 4 for lighting and light receiving are inserted into a flexible tube 5. The tip part of the flexible tube 5 is inserted, and a sensor head housing 8 is tightly closed. A temperature indicating material 9 is stuck to the inside of the sensor head housing 8. The color change in temperature indicating material 9 based on the temperature change of a body to be measured is guided into a color recognizing photodetector 15 through a fiber 4. The recognized signal of the photodetector 15 is processed in an operating part 12. The results are displayed on a color display part 14 or outputted through a printer 13. Such a constitution is provided. Part of the reflected colored light from the temperature indicating material 9 is guided to a color display part 6 directly in the unprocessed state through a half mirror 7. Thus the color change can be visually observed. Since the sensor head 2 can be set at an arbitrary length, the sensor head can be moved to an arbitrary place.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a temperature measuring device, and in particular can safely measure temperature distribution during storage or transfer of flammable liquids and powders. The present invention relates to a temperature measuring device.

[Conventional technology]

Conventionally, there are thermocouple thermometers and resistance thermometers that utilize electrical properties, optical pyrometers and radiation thermometers that utilize thermal radiation, and liquid thermometers that utilize the expansion of objects. Enclosed glass thermometers, bimetallic and metal thermometers, etc. are widely used.

[Problem to be solved by the invention]

Among the conventional thermometers mentioned above, there is no thermometer that can easily and safely measure the temperature distribution, etc., especially during storage or transfer of flammable liquids and powders, while moving the sensor head. Temperature measurement for such applications has installation restrictions.

[Means to solve the problem]

The present invention has functions not found in conventional thermometers as described above, and can easily and safely measure temperature distribution, etc., especially during storage or transfer of flammable liquids and powders, while fixing or moving the sensor head. This is a temperature measuring device capable of measuring temperature, in which a temperature indicating material is pasted inside the sensor head housing which is sealed by inserting the tip of a flexible tube into which an optical fiber for illumination and an optical fiber for light reception can be inserted. , the color change of the temperature indicating material based on the temperature change of the object to be measured is guided to a color identification light receiving element via a light receiving optical fiber, and the identification signal of the color identification light receiving element is arithmetic processed and displayed as color data. Or, it is characterized in that it is configured to be printed out, and a portion of the reflected colored light from the temperature indicating material guided by the light-receiving optical fiber can be directly guided to the display section without being processed for visual observation. The sensor head housing has a high thermal conductivity that can quickly transmit the temperature of the object to be measured to the temperature indicating material when the sensor head is placed inside the object to be measured. This is a temperature measuring device characterized by being made of a material.

〔Example〕

Hereinafter, the present invention will be described in detail based on the drawings.

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of the main parts of the temperature measuring device of the present invention, and FIG. 2 is an enlarged sectional view of the senna head.

The sensor head 2 has a sealed sensor head housing 8
When the sensor head 2 is placed inside the body to be measured, the 3-sensor head housing quickly transmits the temperature of the body to be measured to the temperature indicating material 9 attached to the inner surface of the sensor head housing 8. It is made of a material with high thermal conductivity. As the temperature indicating material 9, a known temperature indicating material made of a chemical substance that changes color depending on a change in temperature can be used.

The tip of a flexible tube 5 through which the illumination optical fiber 3 and the light-receiving optical fiber 4 can be inserted is inserted into the sensor head housing 8 .

The light beam emitted from the light source 11 in the device main body 1 passes through the illumination optical fiber 3 and illuminates the surface of the temperature indicator material 9 from the projection section 31, and the reflected light passes through the incident section 41 and the light receiving optical fiber 4, where it is colored. The light is guided to the identification light receiving element 15, and the identification signal of the color identification light receiving element 15 is sent to the arithmetic processing unit 1.
2, the data is arithmetic-processed and displayed on the display unit 14 as color data, and can also be output to the printer 13. In addition, by branching a part of the light-receiving optical fiber 4 or changing the optical path through a half mirror 7, a part of the reflected colored light from the temperature indicating material 9 guided by the light-receiving optical fiber 4 can be removed. The untreated light is guided directly to the color display section 6 so that color changes can be visually observed.

[Effect]

Since the present invention has the configuration described above, it has functions not found in conventional thermometers, and is particularly useful when measuring temperature distribution during storage or transfer of flammable liquids or powders. Yes, the sensor head is held by a flexible tube, and the length of the flexible tube can be set arbitrarily, so the temperature at each point can be easily and safely measured while moving the sensor head to any location. There are certain effects that can be achieved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic view of the main parts of the temperature measuring device of the present invention, and FIG. 2 is an enlarged sectional view of the sensor head. 1. Apparatus body 1), light source 12, arithmetic processing section 13, printer 14, display section 15, color recognition light receiving element 2, sensor head 3, optical fiber for illumination 31, projection section 4゜41゜5゜6゜7゜8゜9゜Optical fiber entrance part for light reception Flexible tube Color display part Half mirror Sensor head housing Temperature indicating material H, -+, -,,'r,,'' Fig. 1 Fig. 2/-

Claims (3)

[Claims] (1) A temperature-indicating material is pasted inside the sensor head housing, which is sealed by inserting the tip of a flexible tube through which the optical fiber for illumination and the optical fiber for light reception can be inserted, and the temperature indicator is detected based on the temperature change of the object to be measured. The color change of the temperature indicating material is guided to a color identification light receiving element via a light receiving optical fiber, and the identification signal of the color identification light receiving element is arithmetic processed and displayed as color data or printed out. A temperature measuring device characterized by: (2) A patent claim characterized in that a portion of the reflected colored light from the temperature indicating material guided by the light-receiving optical fiber is directly guided to the display part without being processed so that it can be visually observed. Temperature measuring device described in scope (1) (3) The sensor head housing is characterized by being made of a material with a high thermal conductivity that can quickly transmit the temperature of the object to be measured to the temperature indicating material when the sensor head is placed inside the object to be measured. A temperature measuring device according to claim (1).