Conductor, Insulator, Resistor and Current Flow
Knowledge of key electrical terminology is necessary to fully understand principles in electrical theory. The following are key terms: Conductor Insulator Resistor Electron current flow Conventional current flow Direct current…
What is Electricity ?
What is electricity? Electricity is defined as "the flow of electrons through simple materials and devices" or "that force which moves electrons." Scientists think electricity is produced by very tiny…
Remote Seal Transmitters Temperature Error
Calculation of temperature error for remote seals The following equation is used to calculate the temperature error for remote seals: dp = (tRS - tCal) . fRS + (tCap -…
Capillary Tubing Pressure Sensor Temperature & Elevation Problems
Capillary tubing provides a convenient method to separate a pressure instrument such as a gauge or transmitter from the actual process connection, allowing the instrument to be installed in a…
Effects of Symmetric and Asymmetric Capillary Tube Pressure Measurement
Symmetric capillary 1. Seal Effect: If the ambient temperature increases the capillary volume V will tend to exert forces on the DP seal (both sides). If both capillary have the…
Heating and Mixing of Products using PLC Example Tutorial
This is a PLC Program for automatic heating and mixing of products. Learn the PLC programming with this example for engineering students.
PLC Program for Alarm Security System
This is the PLC Program for Alarm Security Systems. Learn the PLC programming with this example problem.
Interface Level Measurement Selection Guide
The table gives some guidance related to the oil-water interface level measurement for a single technology. However, it is important to understand the need for measurement. For some application, several…
Guided Wave Radar Level Sensor Pressure and Temperature Effects
High pressures/temperatures reduce the propagation velocity of the measuring signals in the gas/vapour above the liquid interface to be measured. The result of the high pressure/temperature is a systematic measuring…
Manual Level Measurement
Although the scope of the document is about fixed installed measuring instruments, manual measurements should be at least discussed briefly. Manual measurements are still quite often used as they are…
