Facts About Orifice Flow Meters
The orifice plate is for flow measurement : an inexpensive yet effective primary sensing element. Study Orifice Flow Meters and Sensors.
Basics of Chromatograph Operation
Chromatograph Operation : This animation shows the basic operation of a gas chromatograph, showing the separation of different molecular species in a gas mixture. Each gas type is represented by…
Disassembly of Sliding-stem Control Valve
The following collection of photographs chronicles the complete disassembly of a Fisher E-body globe valve with pneumatic diaphragm actuator. This control valve design is quite mature, but nevertheless enjoys wide…
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,…
