排列三012走势图组选 www.gfzd.net Radar level meter is a very common level measurement tool, in the selection of the time, we must know some common parameters. such as:
1, the measurement range is a few meters, ask the blind area is how much.
2, the type of medium to be measured (liquid or solid, specific names such as: water, sewage, mud, gasoline, diesel, toluene, sulfur dioxide, ore, coal, cement, soybeans, wheat, corn, flour, etc.). If it is liquid: whether there is steam, mist, foam, waves, stirring, floating objects; if it is solid: whether there is dust, the media is granular or powder.
3, medium minimum \ maximum temperature, minimum \ maximum pressure.
4, the corrosive media, if it is placed in the jar, you need to know the material of the jar, there is no anti-corrosion lining.
5, whether the need for corrosion, explosion, to split or integrated.
6, the working environment: the open pool, a pool of ponds, cans, cans, spherical tank, whether the tank through the atmospheric pressure.
7, the work of power: DC 24VDC or AC 220VAC.
8, the output signal: 4 ~ 20mA current, or 485 communication output, the need for relay output?