Guided Microwave & Floats

Guided Microwave

Principle

Guided microwave radar-level measurement uses radio waves directed down a thin measurement tube (the guide). This provides a precise and narrow field of measurement, ideal for detecting interfaces between different liquid layers, such as oil and water.

Advantages

Suitable for solid and liquid applications
Measures both initial level and interface level
Immune to dust, vibration, foam, irregular tank design, and changes in pressure, moisture, and density
Effective with thick or coating liquids or solids

Disadvantages

Limited to a narrow measurement column, unsuitable for solids that can pile or accumulate around the sensor

Analogue Float Sensors

Principle

Analogue float sensors use a magnetic float mounted on a specially constructed stainless-steel shaft to accurately measure the liquid level in a tank.