● The measurement range is a few meters, and what is the blind area requirement?
● Measured media type (liquid or solid, specific names such as: clean water, sewage, mud, gasoline, diesel, toluene, sulfur dioxide, ore, coal, cement, soybeans, wheat, corn, flour, etc.)
If it is a liquid: whether there is steam, fog, foam, waves, stirring, floating objects on the liquid surface;
If it is solid: if there is dust, the medium is granular or powdery.
● The minimum to maximum temperature of the medium, minimum to maximum pressure.
● The corrosiveness of the medium. If it is in a jar, you need to know the material of the jar, and there is no anti-corrosion lining.
● Whether to need anti-corrosion, explosion-proof, split or integrated type.
●Working environment: open pools, covered pools, lying tanks, vertical tanks, spherical tanks, whether the tanks pass atmospheric pressure, etc.
●Working power: DC 24VDC or AC 220VAC, 12VDC special power supply can be customized.
●Output signal: 4～20mA current, or 485 communication output, need relay output?