U-tube Manometer Principle
The simplest form of manometer consists of a U-shaped glass tube containing liquid. It is used to measure gauge pressure and are the primary instruments used in the workshop for…
What is a Barometer?
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Barometers and pressure altimeters (the most basic and common type of altimeter) are essentially…
What is a Pneumatic Actuator ?
Actuator : By themselves, valves cannot control a process. Manual valves require an operator to position them to control a process variable. Valves that must be operated remotely and automatically…
Level Transmitter and Level Gauge Design Tips
Level Transmitter and Level Gauge Design Tips Level / Vessel Sketches What is this ? Level sketch or vessel sketch is the drawing prepared by Instrumentation engineer to show various…
What is a Bridle?
A bridle (or cage, isolating column, bypass pipe, external chamber, etc.) is a vertical pipe connected to the side of a storage tank or process vessel typically with side/side or side/bottom…
How to Read Gauge Analog Scales
1. Interpret the pressure measurement displayed by this gauge mechanism, assuming a gauge accuracy of ± 1% full scale: How low and how high could this pressure actually be, given…
Formula of 2 Wire RTD, 3 Wire RTD & 4 Wire RTD
2 Wire RTD : where Rpt is Resistance of RTD R2 is Resistance of first lead wire (Extension cable used to connect RTD) R3 is Resistance of second lead wire…
Top 1000 Instrumentation Engineering Objective Questions
Instrumentation Engineering Objective Questions These are helpful for engineering students, freshers, Technical Job Preparation, Exam practices, to crack an interview etc. 1. Measurement and Instrumentation The section contains questions and…
Latest Transformers Questions and Answers
What is a transformer and how does it work? A transformer is an electrical static equipment designed to convert alternating current from one voltage to another. It can be designed…
How to Draw a Schematic Diagram ?
An alternative to the conventional schematic diagram in AC power control systems is the ladder diagram. In this convention, the “hot” and “neutral” power conductors are drawn as vertical lines…
