Search Results for: Control valve
- Interview Questions
Instrumentation interview questions
What is Process control? A process control is continuous changing of a process variable to desire variable according to the measured…
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Difference between 2 wire & 4 wire transmitter current loops
The current loop uses DC power because the magnitude of the current represents the signal level that is being transmitted.…
Read More » - Level Measurement
What are different kinds of level switches?
Introduction A wide variety of level switches available are available for use in measurement and control applications. The most common…
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Types of Signal Transmission
Introduction The secondary electronics of a transmitter amplify and condition the weak electrical signals generated by the sensor, so that…
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What are Open Loop & Closed Loop system
Introduction There are two types of control systems namely Open Loop & Closed Loop system …
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P&ID legends
INTRODUCTION As an Instrument Technician trainee you will use Piping and Instrument Diagrams or P&ID’s in your job. You must…
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P&ID and Common Abbreviation
INTRODUCTION A piping and instrumentation diagram (P&ID) is a diagram in the process industry which shows the piping of the…
Read More » - Calibration
I/P converter calibration
Introduction Current to pressure converter (I/P) converts an analog signal (4 to 20 mA) to a proportional pneumatic output (3 to 15…
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TURBINE FLOW METER
Introduction Flow is an important physical quantity that needs to be controlled,monitored. There are so many flow measuring devices. lets…
Read More » Basics of Pressure Transmitter
What is a Pressure Transmitter ? A pressure transmitter is a transducer that converts pressure into an electrical signal. It…
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