Purity of medium
The liquid cannot be filled with dense bubbles.
A large number of solids, such as crystals, cannot be suspended in a liquid.
A large amount of sediment and sediment cannot be deposited at the bottom of the container.
Medium viscosity
Dynamic viscosity <10mPaS is normally measured.10mPaS< dynamic viscosity <30mPaS > may reduce the meter range.Dynamic viscosity >30mPaS cannot be measured.
Note: as the viscosity decreases with the increase of temperature, most of the high-viscosity liquids are more significantly affected by temperature, so the temperature of the liquids with viscosity should be paid attention to when measuring.
The container to be tested
1. Material: the container wall where the measuring probe is installed shall be made of hard materials that can transmit signals well.Examples: carbon steel, stainless steel, all kinds of hard metal, glass steel, hard plastic, ceramics, glass, hard rubber and other materials or their composite materials.If the wall of the vessel where the measuring probe is installed is multilayer material, the layers shall be in close contact without air bubbles or gaseous interlayer. The inner and outer surface of the vessel wall shall be flat. Examples: vulcanized hard rubber liner, stainless steel liner, titanium liner.
2. Wall thickness: 1-100mm
3. Tank type: spherical tank, horizontal tank, vertical tank, etc.
Probe installation requirements
1. For an iron container, the working end surface of the probe can be coated with silicone grease and directly attached to the bottom of the container with a magnetic chuck;If the shell of the container is made of glass or other materials, the probe can be fixed with glue or the bottom of the container can be fixed with a bracket.The probe must point in the same line as the measured distance.
2. Non-coil pipe and other shielding materials directly above the probe;
3. Keep away from the inlet of the bottom of the tank to avoid the impact of severe flow on measurement;
4. Keep away from the position below the tank top inlet, so as to avoid severe fluctuation of the liquid level caused by the injection impact;
5. It is higher than the discharge port or discharge port to avoid the influence of long-term sediment on the measurement of tank bottom. If the conditions are not met, measures should be taken to ensure periodic removal of tank bottom dirt;
6. liquid level measuring head with magnetic or welding/bonding fixed way when installation, the installation of the vessel wall surface size should be no less than 80 Ф circular surface, the surface roughness should reach 1.6, the inclination should be less than 3 ° (except by-pass pipe).
