Author name: Rabert T

Checklist to Carry out PLC Preventive Maintenance Activity

A preventive maintenance checklist is a group of tasks that the technician must complete to close a preventive maintenance work order. The purpose of a preventive maintenance checklist is to confirm for maintenance tasks are correctly done. The maintenance schedule of Programmable Logic Controllers depends upon the environment of the controllers. Frequent maintenance of the …

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What are Dry Contact and Wet Contact and their differences?

What is Dry Contact? Dry contacts are known as voltage-free contacts or potential-free contacts. These contacts don’t provide any power or voltage source from the switch. But power or voltage source is provided from an external source. The contact current for these dry contact is less than one milli-ampere. The power supply must be provided …

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What are Multifunction Calibrators (MFC) and how to use it?

What is a multifunction calibrator? Multifunction calibrators are flexible instruments with a sophisticated array of electronics suitable for reading and sourcing voltage, current, frequency, and resistance signals from nearby sources. These calibrators are designed to perform various types of calibrations in industrial applications. These calibrators source, simulate and measure various process parameters such as pressure, …

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What are various Temperature calibrators and How to use them?

What is temperature calibration? Temperature calibration is a process of determining and correcting the accuracy error of the instrument used in a system that measures temperature. Generally, calibration of an instrument is a process of checking and verifying the accuracy of a measuring instrument by comparing it with a standard. What is a temperature calibrator? …

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What is a Safety Barrier? & how does Safety Barrier work?

What is a safety barrier? Safety barriers are intrinsically safe Shunt diodes. These barriers are passive network devices that use Zener diodes, resistors, and fuses to deflect surplus or extra electrical energy to the ground via earthing systems. To prevent sparking or overheating of plant equipment located in hazardous areas. Safety barrier is a circuit …

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