The RPM4 is the 3rd generation of digital pressure monitor. It is a configured product with one or two transducers per enclosure. Pressure ranges available from low absolute pressure to 40,000 psi (280 MPa). A similar product, the RPM4-AD, has its own Operation and Maintenance manual.
http://us.flukecal.com/literature/product-manuals/rpm4-operation-and-maintenance