Archive for the ‘Principles of Good Measurement’ Category
Posted on 23/05/08, under Level Switching, Principles of Good Measurement · RSS · No Comments
VEGAKON: Conductance Level Switches
Measuring principle and applications
The instruments work according to the conductive measuring principle and are used in conductive liquids. The probe detects the product resistance when being immersed. A low alternating current flows which…
Posted on 07/05/08, under Level Switching, Principles of Good Measurement, Vibration Measurement Solid Switches · RSS · No Comments
VEGASWING: For manifold applications in liquids
Measuring principle and applications
The piezo drive is the heart of the sensor, activating the tuning fork to vibrate on its resonance frequency. The frequency of the fork reduces with the immersion. The…
Posted on 06/05/08, under Level Measurement, Principles of Good Measurement · RSS · No Comments
Measuring principle – Capacitance Sensor
The proven capacitive measuring principle is one of the most common measuring principles for level measurement in the industrial measurement technology. Sensor and vessel form the two electrodes of a capacitor. A capacitance change caused…
Posted on 30/04/08, under Level Measurement, Principles of Good Measurement · RSS · 5 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…
Posted on 28/04/08, under Guided Microwave TDR, Level Measurement, Principles of Good Measurement · RSS · 4 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…
