Our company production and HCDAR HCDAR - 63-64, installed in the blast furnace high, elevated are enclosed bin, prevent under-burnt clinker dust, it brought difficulties to the site operating personnel, material level meter is a service production is very necessary detecting element, measuring distance of up to 70 meters, used for the detection of silo; Company production and HCDAR HCDAR - 62-65, installed in sintering production site, the site conditions, high temperature, dust, 30 meters, measuring distance measuring car material thickness.