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SIS/ESD

What is the difference between Blowdown Valves (BDV) & Pressure Safety Valve (PSV)

Both BDV and PSV are kind of safety valves. What is PSV? PSV's are used...
Control Valve

What is Snap acting relay?

What is snap acting relay? Snap acting relay senses the supply pressure and changes the...
PLC

PLC learning series 5: 8 Rules for ladder diagram programming

There are a set of universal laws that governs how a ladder diagram are...
Communication

What are Fieldbus Coupling devices?

What are Fieldbus coupling devices? Fieldbus coupling equipment (often informally referred to as bricks) are...
Temperature Measurement

Advantages & Disadvantages of thermocouple

Advantages of Thermocouple: They are capable of being used to directly measure temperatures up to...
PLC

PLC learning series 4 : How a ladder logic diagram works? How to read ladder logic ?

How a Ladder Logic diagram works? Ladder diagrams describe programs in graphical form, used in...
Electrical

Types of Time delay relay, Applications of time delay relay.

What is Time delay relay? Timing relay has a device that delays the instant switching...
Flow Measurement

Thermal Dispersion Flow Switch Working Principle

The thermal dispersion flow switch is an accurate liquid flow sensor. The operating principle...
HVAC

What is Damper in HVAC system?

What is Damper? A damper is a valve or plate that prevents or controls air...
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...
PLC

PLC learning series 2: PLC programming languages

A PLC programming language offers guidelines for combining directions to create the required actions....
Control Valve

What is Speed Limiter on Shutdown Valves?

What is speed limiter? Speed Limiter is a speed controller on shutdown valve, Needle valves...
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