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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
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Equipments Used to Measure Body Temperature01:13

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
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Gas Chromatography: Types of Detectors-I01:21

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There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Assessing Body Temperature - Tympanic membrane01:14

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Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Fiber-tip high-temperature sensor based on multimode interference.

Pengfei Wang, Ming Ding, Lin Bo

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    |December 11, 2013
    PubMed
    Summary
    This summary is machine-generated.

    A novel fiber-tip sensor utilizes multimode interference for high-temperature measurements up to 1089 °C. This advanced sensor achieves a sensitivity of 11.4 pm/°C, offering precise thermal monitoring capabilities.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Sensor Technology

    Background:

    • Accurate high-temperature measurement is critical in various industrial and scientific applications.
    • Existing sensors may face limitations in broad temperature ranges or harsh environments.
    • Fiber-optic sensors offer advantages such as remote sensing and immunity to electromagnetic interference.

    Purpose of the Study:

    • To demonstrate a fiber-tip sensor for high-temperature measurement using multimode interference.
    • To investigate the theoretical and experimental performance of the sensor across a wide temperature range.
    • To evaluate the sensor's sensitivity and operational stability at elevated temperatures.

    Main Methods:

    • Theoretical modeling of multimode interference in a fiber tip.
    • Experimental fabrication of the fiber-tip sensor.
    • Calibration and testing of the sensor from room temperature to 1089 °C.
    • Analysis of spectral shifts in response to temperature changes.

    Main Results:

    • Successful demonstration of a fiber-tip sensor based on multimode interference.
    • The sensor effectively measures temperatures from room temperature to 1089 °C.
    • An average experimental sensitivity of 11.4 pm/°C was achieved.
    • The sensor exhibits stable performance across the tested temperature interval.

    Conclusions:

    • The developed fiber-tip sensor is a viable solution for high-temperature sensing.
    • Multimode interference provides a robust mechanism for temperature discrimination in optical fibers.
    • The sensor's broad operating range and sensitivity make it suitable for demanding applications.