Two Solenoid Valves Working Principle
A solenoid valve is an electro-mechanical device in which the solenoid uses an electric current to generate a magnetic field and thereby operate a mechanism which regulates the opening of…
Resistance Temperature Detectors Troubleshooting Tips
Resistance Temperature Detectors(RTDs) are widely used across several industries – power, food and beverage etc – for temperature measurement. In using them, different types of application problems occur once in…
How to Test a Pressure Gauge
Both analog and digital process gauges need to be verified to detect errors related to drift, environment, electrical supply, addition of components to the output loop, and other process changes.…
Pressure Transmitter Calibration at the bench
Technicians calibrate at the bench to ensure calibrations are effective and don’t result in degradation of performance. They ensure that all components are in good working order prior to installation,…
Vibration Switch Working Principle
A vibration switch is a device that recognizes the amplitude of the vibration to which it is exposed and provides some sort of response when this amplitude exceeds a predetermined…
How to Test a Pressure Switch ?
Accurate calibration of pressure switches is a critical step in ensuring process quality and the safe operation of equipment. The setup is similar to pressure gauge calibration except now a…
Basics of Restriction Orifice (RO) – Types, Applications, Standards
Restriction orifice (RO) is used to achieve controlled or restricted flow of process medium. The orifice offers a restriction to the process flow.
Types of Fire and Gas Detectors
Fire and Gas System or portion of a combination system that consists of components and circuits arranged to monitor and annunciate the status of fire or presence of gas alarm…
Overview of Fire/Smoke/Flame/Heat/Gas Detectors
Fire Detectors Fire detectors are available for residential, commercial, and industrial use. Models are available for both single and multiple stations, as well as system applications. There are a number…
How to Select Control Valve Failure Mode
Valve fail mode may be shown in instrument diagrams by either an arrow pointing in the direction of failure (assuming a direct-acting valve body where stem motion toward the body…
