Spirax Sarco”s M410 line of orifice plate flowmeters measures both density-compensated and non-density-compensated flow of steam, liquids and most gases. The meters reduce maintenance costs by eliminating: a. moving parts or holes that can clog; b. internal gaskets that can fail; and c. the need for bypass piping installation. The units can also be combined with temperature/pressure transmitters and flow computers to create a custom metering package for specific applications. The meters provide a 4-to-1 turndown with an accuracy of +/-3 percent of rate and a repeatability of +/-0.3 percent.