Electrical Instruments & Measurement

What is Optical Pyrometer? Working Principle, Diagram, Types, Construction & Applications

An optical pyrometer is an instrument used to measure high temperatures, often in industrial applications, by comparing the intensity of radiation emitted by a hot object to that of a calibrated light source. Unlike contact thermometers, it measures temperature without making physical contact with the object, making it suitable for measuring extreme heat such as […]

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What is pH Meter? Definition, Construction, Working, Types, Advantages, Disadvantages & Applications

A pH meter is an electronic instrument used to measure the acidity or alkalinity of a solution, expressed as pH. The pH scale ranges from 0 to 14, where a pH of 7 indicates neutrality, values below 7 indicate acidity, and values above 7 indicate alkalinity. A pH meter provides precise pH readings, which are

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What is an Energy Meter? Working, Diagram, Construction, Advantages, Types & Applications

An Energy Meter, also known as a watt-hour meter, is an electrical device used to measure the amount of electrical energy consumed by a residence, business, or electrically-powered device. The energy is typically measured in kilowatt-hours (kWh), which is the standard billing unit for energy consumption.

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What is Turbine Flow Meter? Working Principle, Diagram, Construction, Advantages & Applications

A turbine flow meter is a device used to measure the flow rate of a fluid (liquid or gas) by converting the kinetic energy of the fluid into rotational motion of a turbine. The flow rate is proportional to the rotational speed of the turbine. Figure 1: Turbine Flow Meter.

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What is Rotameter? Working Principle, Diagram, Construction, Advantages & Applications

In rotameter, the area of flow is measured in such a way that the head differential is constant. Hence rotameter is called variable area meter or area meter. Rotameters are widely used for metering purge flows, pump-seal fluid and coolants and lubricants for operating machinery. Figure 1: Rotameter.

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