Radar Level Measurement
Radar level instruments measure the distance from the transmitter (located at some high point) to the surface of a process material located farther below in much the same way as…
What is ON/OFF Valve ?
An ON/OFF Valve is the fluid equivalent of an electrical switch, a device that either allows unimpeded flow or acts to prevent flow altogether. These valves are often used for…
Capacitance Level Switch Calibration
Level Measurement: In industry, liquids such as water, chemicals, and solvents are used in various processes. The amount of such liquid stored can be found by measuring level of the liquid in…
Speed Probe Working Principle
Rotating machinery requires speed sensing for functional systems such as control, monitoring, and safety. To ensure safe operation, it is especially important to monitor rotor speeds in turbine engines. Inductive…
Metering Pumps
A very common method for directly controlling low flow rates of fluids is to use a device known as a metering pump. A “metering pump” is a pump mechanism, motor,…
Two out of Three Logic Analogy
Two out of Three Logic with Boolean Algebra Analysis : In designing digital circuits, the designer often begins with a truth table describing what the circuit should do. The design…
Safety Questions and Answers
HSE and Safety Interview Questions and Answers What is a BUMP TEST ? A bump test is a functional test of a gas monitor/detector. Sensors and alarm indicators are tested,…
Displacer Interface Level Measurement
Displacer level instruments may be used to measure liquid-liquid interfaces just the same as hydrostatic pressure instruments. One important requirement is that the displacer always be fully submerged (“flooded”). If…
How Buoyant Force instruments Works ?
Displacer level instruments exploit Archimedes’ Principle to detect liquid level by continuously measuring the weight of an object (called the displacer ) immersed in the process liquid. As liquid level…
Fixed Gas Detectors vs. Portable Gas Detectors
Fixed Gas Detection Systems vs. Portable Gas Monitors Fixed gas detection systems and portable gas monitors are both essential to protecting workers and equipment and meeting OSHA/EPA requirements. Both products…
