1. When using radar level gauges, the measurement scale must be taken into account. Over-scale operations cannot only obtain accurate measurement data, and may also damage radar level gauges. The scale of the measurement must be calculated from the beginning of the tank bottom touched by the light wave. If the piggy bank is rather special, the bottom is concave, and this time point is lower than the accounting point and cannot be measured.
2. If the medium has a low dielectric constant, the bottom of the tank is visible when it is in a low liquid level. At this time, in order to ensure the measurement accuracy, it is advisable to move the zero point azimuth upward.
3, in the measurement of low dielectric constant medium, if its level is lower than the level measurement value, and the bottom of the tank is visible, if you want to make the measurement value more accurate, you can adjust the zero point higher than the bottom of the tank. position. Although the measurement scale value can reach the top of the antenna tip, this is only the state of ambition. In the existing situation, the demand needs to consider the adhesion effect, so the measurement value should be fixed at least 100 mm from the top of the antenna. .
4. For overflow maintenance, a safety distance can be defined to be attached to the blind spot.
5, if the measuring medium is in constant motion, in order to ensure the accuracy of measurement, it is advocated that the waveguide is fixed on the bottom of the piggy bank on the spot, and then fixed in the center position. During the welding process, the inner wall of the waveguide is required to be ensured. The degree of lubrication, in order to avoid the concave and convex points on the guided wave to produce a blocking effect, but also need to ensure the smoothness of the welding.
6, radar level gauge with different concentrations, the foam can absorb microwaves, but also be able to reflect it, but under certain conditions can be measured.
Piston& Piston Ring
Piston rings are manufactured and classified on the basis of function and usability. The primary usage of the Piston Ring is to seal the chamber (where the piston is moving), which can be a combustion chamber of a 2 stroke or a 4 stroke engine. Marine engines have three or more types of rings fitted on the circumference of the piston.
The piston ring is an essential piston part, and its numbers and functionality differ depending on the type and capacity of the engine.
In 2-stroke large engines, compression type piston rings are used to seal the combustion chamber and wiper rings are installed below them to wipe the deposits from the liner and distribute oil on the liner surface.
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