PopisFL45100 Series flowmeters feature a rugged, one-piece meter body of heat- and chemical-resistant injection-moulded polysulfone. A precision-textured light-admitting surface at the rear of the meter body diffuses ambient light and creates a softly illuminated background to enhance readability. These meters are not recommended for applications involving direct sunlight. Additional features include a stainless steel float guide and float, 1" FNPT polysulfone adaptors, and FKM O-ring seals. For harsh applications, units may be ordered with Hastelloy C float guide and float of either Hastelloy or TFE (depending on flow range).