Archive for the ‘Level Measurement’ Category
Posted on 30/04/08, under Level Measurement, Principles of Good Measurement · RSS · 2 Comments
Measurement Principle of Ultrasonic Level Transmitters
Short ultrasonic impulses in to range of 10 to 70 kHz are emitted by the transducer to the measured product, reflected by the product surface and received again by the transducer. They spread with sound…
Posted on 28/04/08, under Guided Microwave TDR, Level Measurement, Principles of Good Measurement · RSS · No Comments
High frequency microwave pulses are coupled on a cable or rod and guided along the probe. The pulse is reflected by the product surface and received by the processing electronics. This electronics evaluates the echo signal and converts it into…
Posted on 24/04/08, under Level Measurement, Principles of Good Measurement, Radar · RSS · 1 Comment
Measuring principle of a Radar Level Gauge
The antenna on a radar level gauge generates millions of very short 1 nano second microwave pulses every second. Each pulse is directed and transmitted to and reflected from a product surface. The elapsed…
