The BGF armored variable area flow meter is ideal for difficult applications requiring high pressure/temperature operation or low pressure loss. Its all metal, armored design is available in stainless steel, PTFE clad stainless steel, or Hastelloy C22. The BGF series is unique in that its design employs a guided float and spring return mechanism that allow the BGF to be installed in both horizontal and vertical pipes. In standard configuration, the BGN is a purely mechanical meter suited for water, viscous liquids and compressed gases in line sizes up to 3 inches. However, electronic limit switches or an analog flow transmitter may be added if so desired. The Analog output is supplied standard with HART® protocol. Profibus-PA is also available as an option. Switches and analog outputs are available which operate in an intrinsically safe mode and may be used with explosive gases in intrinsically safe installations. Custom designs for high pressure operation, with special fittings, and with special materials of construction are common.
