The development and advances in science and technology have resulted in several manufacturing industries going for complete automation of their industrial production. To achieve this, level measurement instruments are essential, but often while selecting their level measurement instrument, customers make the mistake of focusing just on the range and application that they need the product for and ignoring the effect that temperature and pressure might have on it.
In this context, it’s important to talk about radar-level measurement instruments. A radar-level instrument measures the distance from the transmitter to the surface of the material by measuring the time taken by the emitted electromagnetic waves. In most cases, the phrase “virtually unaffected by temperature and pressure variations” is used, which points to the negligible effect that they have on radar level meters, but one still needs to be mindful of that.
Here are some variables that affect the accuracy of Radar Level Measurement Instrument:
- The electromagnetic waves emitted to measure the level do not require any transmission medium, including air, which makes the readings immune to any temperature changes. However, the temperature does exert a certain influence over some parts of the meter, making the measurement inaccurate if it goes beyond a certain range.
- The microwave pulses emitted by radar level meters are electromagnetic waves, which means they are not impacted by the density of the air in the vessel, making them capable of working normally in a pressurized environment. However, if the radar level meter is made to work outside the specified pressure range, the accuracy of the measurement will be affected.
- The dielectric constant of the liquid and the turbulence of the liquid do affect the electromagnetic waves, which leads to the weakening of the return signal and inaccurate measurements.
- Factors such as foam, vapors, powders, and dust have no impact on the readings.
All radar level meters have a certain range of temperatures and pressures, and we should be mindful of that to pick the right product for our needs.
At EIP, we provide 3D Radar Level Transmitter, which is the world’s first 5 beam radar and can process temperatures ranging from -40° to + 185°C and pressure ranging from -0.2 to 40 bar. Our 140 GHz Radar Level Transmitter can process temperatures ranging from -60° to + 1600°C and pressure ranging from -0.2 to 40 bar. We also provide Non-Contact Radar Level Transmitters and Guided Wave Level Transmitters, which work accurately within a temperature range of -40° to + 400°C and pressure range of -0.2 to 40 bar. Check out our website for more information on these products.