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Archive - June 2021

Fluid Expansion Thermometer
  • Mechanical

Pressure Thermometer (Fluid Expansion Thermometer)

June 30, 2021
by Santhakumar Raja
2 min read
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The pressure thermometer temperature measurement is based on fluid expansion. Fluid expansion thermometer represent one of the most economical, versatile, and widely used devices for industrial temperature measurement...

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Disappearing filament type optical pyrometer
  • Mechanical

Optical Pyrometer Working Principle

June 29, 2021
by Santhakumar Raja
3 min read
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This method refers to the identification of the temperature of a surface with the colour of the radiation emitted. The optical pyrometer compares the brightness of the image produced by the temperature source with that of a...

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Infra Red Pyrometer
  • Mechanical

Infra Red Pyrometer – theteche.com

June 29, 2021
by Santhakumar Raja
2 min read
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These pyrometers absorb only infra red pyrometer rays and measure temperature. At some high temperature, a surface starts emitting I-R rays in addition to visible light energy. These I-R rays are used with a detector and...

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Total Radiation Pyrometer
  • Mechanical

Total Radiation Pyrometers – theteche.com

June 27, 2021
by Santhakumar Raja
2 min read
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Thermal radiation pyrometers is electro magnetic radiation emitted by a body as a result of its temperature. Thermal radiation is in the wavelength region from about 0.1 to 100µm. The total radiation emitted by a blackbody is...

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Hot temperature check for thermometer
  • Mechanical

Calibration of Temperature Measuring Devices

June 22, 2021
by Santhakumar Raja
3 min read
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For calibration of temperature measuring devices, a constant temperature source should be provided. The temperature source should as a minimum be stable enough to provide a constant temperature. (approximately ±0.2°F) for a...

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Filled systems thermometer
  • Mechanical

Filled Systems in Temperature Measurement

June 18, 2021
by Santhakumar Raja
3 min read
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Filled systems temperature is by expansion of gases and liquids when it is heated and contraction of the same when it is cooled. Fig shows a filled systems. The pressure bulb contains thermometer fluid. This is connected to a...

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Reference beam mode of Laser Doppler Anemometer
  • Mechanical

Laser Doppler Anemometer (LDA)

June 16, 2021
by Santhakumar Raja
4 min read
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Laser Doppler Anemometer enables the measurement of instantaneous velocity of a gas or a liquid flowing in a glass walled channel. It offers the non-disturbance advantages of optical methods while affording a very precise...

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Float Technique
  • Mechanical

Float Technique for Other Flow Measurements

June 16, 2021
by Santhakumar Raja
2 min read
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A float technique is a small object lighter than water and thus capable of floating on the water surface. It is usually made of wood or other suitable material. Floats are used to measure the velocity of flow of water in rivers...

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Current Meter
  • Mechanical

Current Meter is Used to Measure

June 16, 2021
by Santhakumar Raja
3 min read
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A current meter is used to measure the velocity of flow in the channel. It consists of a wheel or revolving element on which the conical buckets of V-shaped vanes are fixed. So, the current meters are classified on the basis of...

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Tactile Pressure Sensor
  • Mechanical

How Does a Tactile Pressure Sensor Work?

June 15, 2021
by Santhakumar Raja
3 min read
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Tactile pressure sensors are used to detect the pressure distribution between a sensor and a target. They are often used on the robot grippers or flat tactile arrays to identify whether the finger is in touch with the target...

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