Using the Fluke 717 100G Pressure Calibrator is quite straightforward. First, make sure the device is properly powered, either by a fully - charged battery. You can start measuring pressure by connecting it to the system you want to test. If you need to measure mA, just set the appropriate function on the push - button interface. When using the pressure switch test function, follow the on - screen prompts to capture the set, reset, and deadband values. For choosing different engineering units, simply use the selection option in the menu. As for maintenance, keep the device clean and dry. Avoid exposing it to extreme temperatures or rough handling. When not in use, you can hang it on the Toolpack magnetic hanging system. If you encounter any issues during use, refer to the user manual or contact the Fluke support team.