Closed Tank Level Measurement using DP Transmitters
Hydrostatic head instruments for measuring liquid level in vessels operating above atmospheric pressure uses the full capability of the differential pressure instruments with both sides of the measuring element connected…
Photo Electric Transducers Objective Questions
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
Hysteresis
A detrimental effect to feedback control is a characteristic known as hysteresis: a lack of responsiveness to a change in direction. Although hysteresis typically resides with instruments rather than the…
Dead time
Lag time refers to a damped response from a process, from a change in manipulated variable (e.g. control valve position) to a measured change in process variable: the initial effect…
Multiple Lags (orders)
Simple, self-regulating processes tend to be first-order: that is, they have only one mechanism of lag. More complicated processes often consist of multiple sub-processes, each one with its own lag…
Lag time
If a square-wave signal is applied to an RC passive integrator circuit, the output signal will appear to have a “sawtooth” shape, the crisp rising and falling edges of the…
Open Tank Interface Level Measurement
Open Tank Interface Level Measurement Interface level can be measured in a vessel or tank using differential pressure transmitter or pressure transmitter. An interface level measurement is only possible if…
Thermo Electric Transducers Objective Questions
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
Siemens PLC Interview Questions and Answers
Siemens PLC Interview Questions and Answers : This article covers industrial automation interview questions and answers. Also includes Siemens PLC Questions
Inductive Transducers Objective Questions
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
