Electromagnetic Relay explained in detail with working principle, construction and function with application.
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Electromagnetic Relay explained in detail with working principle, construction and function with application.
Function of the Voltmeter are detailed with their types and application of the voltmeter with pictorial representation.
Clamp Meter is an instrument that measures current in an effective and secure way without the use of test leads.
Ammeter is an instrument used to measure current and it is of different types used in various applications.
The diagrammatic representation of a process plant is known as P&ID. The way to read and interpret PID are detailed. P&ID
Types of Time delay relay
Types of Time delay relay
What is Time delay relay?
Timing relay has a device that delays the instant switching on or off of the armature when power is applied to or removed from the relay.
Some relays are built with a kind of “shock absorber” system connected to the armature, which prevents instant complete movement when the coil is either energized or de-energized.
Types of time delay relay:
The following…
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Thermal Dispersion Flow Switch Working Principle
Thermal Dispersion Flow Switch Working Principle
The thermal dispersion flow switch is an accurate liquid flow sensor. The operating principle is based on the transfer of heat.
The thermal dispersion flow switch comprises of two temperature sensors based on the heat transfer principle. One temperature sensor is the reference and measure the fluid temperature where the flow switch probe is immersed in the heat dispersion.
The second…
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What is Damper in HVAC system?
What is Damper in HVACÂ 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 manually or automatically. A handle on the outside of a duct turns manual…
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PLC learning series 3: PLC Architecture and wiring of PLC
PLC learning series 3: PLC Architecture and wiring of PLC
Architecture of PLC:
CPU
A processor or central processing unit (CPU) is a unit that contains a microprocessor that processes input signals and controls, according to the program stored in memory, then communicates the decisions it takes as control signals to the output interface.
The CPU function is to manage all the processes that occur in the PLC. There are three main components that…
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PLC learning series 2: PLC programming languages
PLC learning series 2: PLC programming languages
A PLC programming language offers guidelines for combining directions to create the required actions. The IEC 61131-3 standard have attempted to merge plc programming languages under one international standard.
A PLC programming language allows the user to enter, edit and monitor the program by connecting to the processor unit and allowing access to the user’s memory.
Various PLC…
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What is Speed Limiter on Shutdown Valves?
What is Speed Limiter on Shutdown Valves?
What is speed limiter?
Speed Limiter is a speed controller on shutdown valve, Needle valves are mostly used as speed limiters. The working principle for globe control valves is the same except that it uses its tiny plug to control the opening of its internal orifice.
Speed Limiter on Shutdown Valves:
The fluid control valve is placed straight before the device gas supply chain to the…
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PLC learning Series I: What is PLC? Functions of PLC
PLC learning Series I: What is PLC? Functions of PLC
What is PLC?
PLC stands for Programmable Logic Control.
Definition: PLC is electronic systems that operate digitally and are designed for use in industrial environments, where the system uses programmable memory for internal storage instructions that implement specific functions such as logic, sequences, timing, enumeration and arithmetic operations to control machines or processes through…
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What is Fire Alarm control panel? What is Sub Fire Alarm Control Panel?
What is Fire Alarm control panel? What is Sub Fire Alarm Control Panel?
What is Fire alarm system?
Fire alarm system is activated by several detectors arranged in several zones, where each zone has one address itself, namely by adding an addressing module at each circuit (zone).
Smoke detectors, heat detectors, manual call points, interfacing modules and flow switches for sprinkler systems in buildings divided into zones and connected directly to each TB…
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What is mimic panel?
What is mimic panel?
A mimic panel shall be provided integral to the Fire & Alarm Control Panel (FACP) for continuous monitoring of the Fire & Alarm System (FAS). The mimic shall contain a simplified layout of the buildings, which are to be monitored.
The indications on the mimic panel shall be driven through hard wired signals from the FAS. The detector types are indicated by means of colored LED’s.
The…
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What is Breaker failure protection? How Breaker failure protection works?
What is Breaker failure protection? How Breaker failure protection works?
What is Breaker Failure Protection?
The breaker failure protection system is backup system. Specifically, this protection is depended on to take suitable action to clear a fault if, for any reason, the breaker usually anticipated to clear the fault does not.
Why breaker failure protection is needed? How it works?
A usual circuit breakeris commanded to open and close by protection and…
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How does the Turbine work?
How does the Turbine work?
What is turbine?
A turbine is a mechanical rotating tool that uses and transforms energy from a fluid flow into helpful job. A turbine is a turbine with at least one shifting portion (rotor installation) connected to a shaft or drum. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor.
Working of turbine:
Working fluid includes potential energy…
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What are Motor Control Centers (MCC)? Types of MCCs
What are Motor Control Centers (MCC)? Types of MCCs
What is Motor Control Center(MCC)?
Motor control centre (MCC) is the centre of controlling the operation of an electric motor, as the centre of control must be able to control the motor operation.
What is meant by the motor control center (MCC) is a collection of several components to control the motors with various types of starters with the starter DOL (direct on line) starter, SDS (star…
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