Comprehensive pressure module family. A family of 48 pressure modules that can perform pressure calibrations from 0 to 2.50 cm (1") water column up to 10,000 psi (2.5 mbar to 690 bar). Relative pressure measurement modules have one pressure connection and measure pressure relative to atmospheric pressure. Differential pressure modules have two pressure connections and measure the difference between the connection with the higher pressure and the connection with the lower pressure. Range, overpressure, and media compatibility are clearly marked on each module. All modules include NPT, BSP, and M20 adapters. Compatible with all documenting, multifunction, and pressure calibrators. Quick and easy measurements. Fluke 750P series pressure modules are very easy to use. To measure pressure, simply connect the pressure module to a pressure source or hand pump.