Temperature Flow Measurement
Temperature Flow Measurement - Related Videos
01:14
Temperature Measurement Sites
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2024
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...
09:50
Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
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Cited by 4 •
2017
A protocol for determining the vitreous phase densities of micro- to pico-liter size drops of aqueous mixtures at cryogenic temperatures is described.
10:05
Measuring Turbulent Flows
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI Turbulent flows exhibit very high frequency fluctuations that require instruments with high time-resolution for their appropriate characterization. Hot-wire anemometers have a short enough time-response to fulfill this requirement. The purpose of this experiment is to demonstrate the use of hot-wire anemometry to characterize a turbulent jet. In this...
01:13
Equipments Used to Measure Body Temperature
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2024
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit. Glass-bulb Thermometer: Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
09:29
Constant Temperature Anemometry: A Tool to Study Turbulent Boundary Layer Flow
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2023
Source: Xiaofeng Liu, Jose Roberto Moreto, and Jaime Dorado, Department of Aerospace Engineering, San Diego State University, San Diego, California A boundary layer is a thin flow region immediately adjacent to the surface of a solid body immersed in flow field. In this region, viscous effects, such as the viscous shear stress, dominate, and the flow is retarded due to the influence of friction between the fluid and the solid surface. Outside of the boundary layer, the flow is inviscid, i.e.,...
FAQs
The heated element establishes a temperature difference within or alongside the moving fluid. As flow changes, the fluid transports or alters heat around the sensor, changing the energy needed to maintain that temperature difference. The measurement therefore links the required heating energy with mass flow rate, allowing the instrument to respond to operating changes.
Ambient temperature, fluid properties, and sensor calibration all influence the reading. Ambient conditions can alter the thermal environment, while fluid properties affect how heat moves around the sensor. Calibration helps account for the behavior of the measurement system under relevant conditions, making these factors important when interpreting or comparing flow results.
Temperature Flow Measurement determines flow from heat transport and the energy required to maintain a sensor temperature difference rather than relying primarily on mechanical movement. This gives engineers a thermal measurement basis for monitoring gases and liquids and can support flow regulation where reducing dependence on mechanical moving parts is useful.
A thermal flow meter first uses an electrically heated element to create a temperature difference. Moving fluid then transports or changes the heat surrounding the sensor. The system observes the resulting thermal behavior and relates the energy required to preserve the temperature difference to mass flow rate, with calibration supporting reliable interpretation.
The approach supports monitoring and control of both gases and liquids. The overview identifies process systems, energy equipment, and laboratory instruments as relevant settings. In these environments, thermal flow information can help track operating conditions and provide a basis for regulating flow without depending exclusively on mechanical moving components.
Reliable thermal flow measurements can reveal changes in operating conditions, support process-efficiency improvements, and assist flow regulation. Engineers can use the readings as part of monitoring and control activities in process, energy, or laboratory settings. Their usefulness depends on accounting for ambient temperature, fluid properties, and sensor calibration when evaluating results.