Conductivity Cell Constant of Conductivity Sensor
The conductivity cell constant of the conductivity sensor is a multiplier constant. The cell constant is multiplied by the measured current to calculate the electrical … Read more
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Control Valve Cavitation and Flashing
This article describes cavitation and flashing in the control valve. Before understanding the phenomenon of cavitation and flashing, let us first understand the basic difference … Read more
Calibration Errors: Zero, Span, Linearity & Hysteresis
There are four types of calibration errors, namely zero,span,linearity and hysteresis. It is important to identify and correction of instrument calibration errors for accurate measurement … Read more
Light Dependent Resistor LDR- Type, Symbol, Construction, Working
Light dependent resistor LDR or photoresistor changes its resistance when light fall on it, thus it detects the presence of light. In this article, we … Read more
Annunciator Panel- Purpose, Working Principle, Applications
Annunciator Panel has a grouping of annunciator lights that indicates the status of the system or equipment. It is used in process industries, buildings and … Read more
Optical Pyrometer- Definition, Construction, Working
Definition: The optical pyrometer functions on the principle of matching the brightness of an object to the brightness of the filament. It is a non-contact … Read more
Rate Compensated Heat Detectors
Rate compensated heat detectors initiate an alarm when the surrounding air temperature reaches at a predefined level, irrespective of the rate of temperature rise. Heat … Read more
What are Linear Heat Detectors?
Linear heat detectors detect only heat. They do not detect smoke. On the other hand, a fire alarm system consists of detection devices that detect … Read more
4 Most Common Types of Temperature Sensors
The 4 Most Common Types of Temperature Sensors are NTC thermistors, RTDs, Thermocouples, and semiconductor-based sensors. These sensors for temperature are used for monitoring and … Read more
Rate of Rise Heat Detectors
Rate of rise heat detectors is a type of heat detector that responds when its element sense the increased temperature of thermal energy of a … Read more