Feedforward Control Questions and Answers
Feedforward Control Questions & Answers 1. The feedback control system: a. Cannot make corrections until a measurable error exists b. Makes a change in output which is the differentiated error…
Actuators Questions and Answers
Actuators Questions and Answers 1. A valve positioner : a. Takes the place of a cascade control system b. Provides more precise valve position c. Makes a pneumatic controller in…
PLC Controls a Valve Video
Learn How PLC Controls a Simple ON-OFF Valve or a Shutdown valve. Watch the below Video : USE EARPHONES
Pressure based Flow Meters
Pressure based Flow Meters like differential pressure transmitters are used to measure the pressure drop to calculate equivalent flow rate.
Continuous Flow Measurement
The Continuous measurement of fluid flow is arguably the single most complex type of process variable measurement in all of industrial instrumentation.
Temperature Sensor Accessories
One of the most important accessories for any temperature-sensing element is a pressure-tight sheath known as a thermowell. This may be thought of as a thermally conductive protrusion into a…
Thermal Imaging Temperature Measurement
A very useful application of non-contact sensor technology is thermal imaging, where a dense array of infrared radiation sensors provides a graphic display of objects in its view according to…
Non-contact Pyrometers Characteristics
An interesting and useful characteristic of non-contact pyrometers is that their calibration does not depend on the distance separating the sensor from the target object’s surface. This is counterintuitive to…
Non-contact Temperature Sensors
Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a function of that temperature. This basic fact makes possible the measurement of temperature by analyzing…
Thermocouples Burnout detection
The most common failure mode for thermocouples is to fail open, otherwise known as “burning out.” An open thermocouple is problematic for any voltage-measuring instrument with high input impedance because…
