This standard describes two performance classes of potable cold-water meters of the electromagnetic and ultrasonic type, in sizes 1/2 in. (13 mm) through 20 in. (500 mm), for revenue applications, and the materials and workmanship employed in their fabrication.
- Type I. This type represents residential and commercial applications where low flow accuracy is of particular concern.
- Type II. This type represents commercial applications where low flow is not of primary concern.
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