The ideal device for custody transfer gas transportation applications is the Fluke 721 precision pressure calibrator. Thanks to two isolated pressure sensors, you can measure static pressure and differential pressure simultaneously with just one device.
Since its founding in 1948, Fluke has provided professional tools and
measurement equipment for the installation, maintenance and service of
electronic equipment in industry, power, medical, building services and
electrical installations, as well as in precision measurement and
quality assurance.