The insertion meter
may be installed or removed from an active line without interrupting service.
Low flow measurements were taken with a Daniel's Senior orifice fitting and the high flow measurements were taken using a Preso insertion meter
Ultrasonic flow meters come in the form of either clamp-on, spoolpiece or insertion meters.
Because the transducers protrude through the pipe wall, insertion meters avoid the issues relating to pipe wall and material that are important for clamp-on meters.
The calibration manifold can accommodate wafer meters from 1/2-inch to 4 inches in diameter, along with insertion meters
in a 6-inch diameter pipe.
Insertion meters are and to measure flare gas in stacks, and ultrasonic flowmeters are used more widely in the chemical and refining industries.
Ultrasonic meters are also less intrusive, with the exception of insertion meters.