Temperature

How to detect Thermocouple burnout?

The most common thermocouple failure method is open failure, otherwise known as “burning out.” An open thermocouple is difficult for any voltage-measuring tool with elevated input impedance because the absence of a full input circuit allows electrical noise from nearby sources (energy lines, electrical engines, variable-frequency engine drives) to be identified by the tool and …

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What is Damper in HVAC system?

What is Damper? A damper is a valve or plate that prevents or controls air flow within a duct, chimney, variable air volume box, air handler, or other air handling machinery. A damper can be used to cut off or control central air conditioning in an unused space. Manual & Automatic Damper: It can operate …

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Non-contact temperature measurement | Pyrometers

Why to use Pyrometers or non-contacting type? Non-contacting temperature meter or Pyrometers are used to measure temperature without any physical contact with temperature body. In many industrial application with a higher temperature range, where many other temperature meters and human can’t reach non-contacting type pyrometers are employed. They are especially suitable for measuring high temperatures that …

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Resistance Temperature Detector ( RTD )

Resistance Temperature Detectors (RTD) are temperature measuring transducers used in industrial applications. RTDs are simple in construction with higher accuracy and repeatability and which are used in the applications below 600°C. Principle: As the name suggests the RTDs are temperature sensitive resistors. The resistance temperature detector (RTD) measures the electrical conductivity as it varies with …

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Basics of Thermistor – Advantages and Disadvantages

A thermistor is a semiconductor device formed from metal oxides. thermistors are used in many applications requiring information about process equipment for alarming and indication purposes. Principle: The principle of temperature measurement with a thermistor is that its resistance changes with temperature. Most thermistors differ from normal resistors in that they have a negative coefficient of …

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