Non Contact RADAR Level Transmitter Principle, Limitations, Design, Installation and Calibration
Measurement principle A radar transmitter should be mounted on the top of a tank, chamber/cage or standpipe. The transmitter sends out microwaves via the antenna, which then travel down to…
Capacitance Level Sensor Principle, Limitations, Installation & Calibration
Measurement principle The capacitive measuring principle is based on the method of the operation of a capacitor. A capacitor is formed by two differently charged electrodes isolated from each other.…
Falling Ball Viscometer Principle
Falling Ball Viscometer uses the simple — but precise — Höppler principle to measure the viscosity of Newtonian liquids by measuring the time required for a ball to fall under…
Practical Pneumatic Instruments
To better understand the design and operation of self-balancing pneumatic mechanisms, it is helpful to examine the workings of some actual instruments. In this section, we will explore three different…
Ultrasonic Level Transmitter Principle, Limitations, Calibration and configuration
Measurement principle Continuous non‐contacting ultrasonic level measurement is based on the time of flight principle. An ultrasonic level instrument measures the time between sound energy transmitter from the sensor, to…
Displacer (buoyancy) Level Transmitter Principle, Limitations, Design, Installation & Calibration
Measurement principle The principle of displacement level measurement is based on Archimedes Principle. Displacement instruments determine liquid level by sensing the buoyant force exerted on a displacer by the liquid…
PLC Timer Programming Examples – TON, TOF, TP and TONR
Discuss about PLC Timer Programming Examples - Different PLC Timers are TON, TOF, TP, and TONR. PLC Timer Instructions and Timer logics.
DP Transmitter Interface Level Measurement Principle, Limitations, Selection, Installation, Design & Calibration
The principle of differential pressure level measurement is based on hydrostatic head. Hydrostatic pressure measurement is the most common means for liquid and interface level measurements. For most applications, differential…
PLC Program for Blinking Lamp on 5 Seconds Interval
PLC Blinking Lamp on 5 Seconds Interval using Ladder Logic. When user presses the SWITCH then lamp will energize & remains ON for 5 seconds time duration.
Electrical Measurements and Instrumentation Objective Questions & Answers
Electrical Measurements and Instrumentation Objective Questions & Answers A 10MHz CRO has (a) 5MHz sweep (b) 10MHz vertical oscillator (c) 10MHz horizontal oscillator (d) 10MHz supply frequency Which of the…
