For gas custody transfer applications is the Fluke 721 Precision Pressure Calibrator. With dual isolated pressure sensors, it allows you to take simultaneous static and differential pressure measurements.
Provide a total pressure calibration solution for transmitters, gauges and switches. Compact pressure calibration solution is about a third of the size of comparable instruments and weighs just one kilogram (two pounds).
Inherently safe;Ideal for gas flow calibration (transfer of ownership);Two insulated stainless steel pressure sensors with 0.025% accuracy;Large backlit display shows up to three inputs simultaneously.