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Point Level Detection Working Principle

S Bharadwaj Reddy
Point level detection in liquids A tuning fork sensor oscillates at its resonant frequency. The drive works piezoelectrically. The oscillating frequency changes as the fork enters the medium. The change...

Contact and Non-Contact Level Sensors

S Bharadwaj Reddy
A good way to reduce the number of level measurement options is to categorize them into two broad categories: contact and non-contact. Then you can filter choices by the type...

Effect of Temperature & Pressure on Level Measurement

S Bharadwaj Reddy
Level measurement systems that use differential pressure ΔP as the sensing method, are by their very nature affected by temperature and pressure. Recall that the measured height H of a column...

Open Tank Level Measurement using DP Transmitters Animation

S Bharadwaj Reddy
Open Tank Level Measurement using DP Transmitters Differential pressure level measurement technique makes use of a differential pressure transmitter which is installed at the bottom of the tank whose level...

Open and Closed Tank Level Calculations

S Bharadwaj Reddy
Open Vessel Level Calculation Open tank : Level Transmitter installed at HP Tapping Point In above example, transmitter installed exactly at HP tapping point i.e. at 0 % Level Calibration...

Bubble Tube Level Measurement Principle

S Bharadwaj Reddy
In the bubble type level system, liquid level is determined by measuring the pressure required to force a gas into a liquid at a point beneath the surface. This method...

Sight Glass Level Measurement Principle

S Bharadwaj Reddy
Use of a sight glass is probably the simplest method of measuring liquid level.  The sight glass is attached to the outside of the tank so that the liquid level...

Level Calculation with Remote Seals

S Bharadwaj Reddy
Diaphragm seals for tanks under Vacuum The transmitter must be mounted level with or below the lowest tap to ensure positive pressure at the transmitter. Dist. Between Taps = H DP = Hside – Lside...

Cat and Mouse type Level Indicator

S Bharadwaj Reddy
Cat and Mouse type is particularly suited to indicating contained liquid levels when viewed from long distances, e.g. provides indication at 1:1 ratio on a large vertical scale board fixed to...

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