Mid-Range Datalogging Manometer. Records data on an SD card in Excel® format The Extech SDL710 Differential Pressure Low-Range Datalogging Manometer measures and datalogs low-range 2.9psi (200mbar) pressure readings. The SDL710 features dual differential inputs with internal sensors, and the capacity to manually store up to 99 readings, while SD memory card (included) allows continuous datalogging. Additionally, readings can easily be exported to an Excel® format for further analysis.