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Monthly Archives: June 2021

Fluid Expansion Thermometer

Pressure Thermometer (Fluid Expansion Thermometer)

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 applications. Basic principle : The...
Disappearing filament type optical pyrometer

Optical Pyrometer Working Principle

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...
Infra Red Pyrometer

Infra Red Pyrometer – theteche.com

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...
Total Radiation Pyrometer

Total Radiation Pyrometers – theteche.com

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...
Hot temperature check for thermometer

Calibration of Temperature Measuring Devices

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...
Filled systems thermometer

Filled Systems in Temperature Measurement

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...
Reference beam mode of Laser Doppler Anemometer

Laser Doppler Anemometer (LDA)

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...
Float Technique

Float Technique for Other Flow Measurements

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...
Current Meter

Current Meter is Used to Measure

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...

How Does a Tactile Pressure Sensor Work?

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...