Used to measure liquid and gas flowrates by means of a tapered tube and float, these variable area flowmeters (photo) feature individually calibrated scales and a 10:1 turndown ratio. All units are factory calibrated and marked to indicate the specific media, flow range, and accuracy class. In addition, they can be calibrated and marked to specific applications. The G Series models feature glass measuring tubes, which enable direct view of the process reading and flow at the meter. For use in difficult operating conditions where pressure or temperature is a factor, the M Series models are equipped with metal measuring tubes and mechanical or electronic displays. NPT and flange-end connections are available in sizes from 1/8 to 1¼ in. Available options include high/low flow indicators, transistor relays and 4 – 20-mA analog outputs. — Swagelok Co., Solon, Ohio