Fluke Calibration PM200 pressure measurement modules use silicon pressure sensors to provide accurate pressure measurements. The modules are simple to install in the 2271A by sliding onto a specially designed track and turning the torque limiting knob to secure in place. Up to two modules with differing ranges can be installed at a time and are easy to replace. Each module uses an enhanced face-seal design that has been leak tested to pressures three times higher than the maximum working pressure to ensure that a leak in the system won't affect the measurement and control of pressure.