Measurement and Calibration 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…
PID Controller Loop Tuning Tips
PID CONTROLLERÂ TUNING If the controller is withdrawn from the control panel face, further adjustments are available which are used to tunethe controller to the process. When a control loop is…
Flow Instruments – Selection, Principle & Application
Let's study different Flow Instruments and their principle, advantages, disadvantages, and applications in industrial flow measurement.
How to Calculate Heat Load in Electrical/Electronic Panel Enclosure
Total heat load consists of the heat transfer from outside your panel and from the heat dissipated inside the control unit. Useful terms &Â Conversions: 1 BTU/hr = 0.293 watts 1…
Location of Measurement Displays
The measurement is displayed for observation by plant personnel. Typically, the display uses analog principles, which means that the display presents the measurement as a position in a graphical format,…
Level Troll working principle
Level Troll working principle An interesting design problem for displacement-type level transmitters is how to transfer the sensed weight of the displacer to the transmitter mechanism while positively sealing process…
Why We use Shielded Cable and Twisted Pair Cables ?
Using shielded cable and/or twisted pair wire is a fairly simple and effective method of reducing measurement noise in low-level signals. Internal wires are shielded from external electric fields in…
How to select a load cell?
The following information is designed to assist in obtaining or providing the necessary information required to select a suitable standard load cell or provide the details required to offer a…
Thermocouples Sources of Error
Homogeneity (Wire Uniformity) With thermocouples the main error lies not with stem conduction but with errors arising from inhomogeneity of the thermocouple wire. Therefore for reliable and consistent results the…
Resistance Temperature Detectors (RTD) Sources of Error
Resistance Temperature Detectors (RTD) Sources of Error Immersion Error - Stem Conduction With the calibration of industrial platinum resistance thermometers (RTD) stem conduction is likely to be the main source…
