vacuubrand DVR 2pro Instructions For Use Manual

36 N°: 999341_EN_DVR 2pro/12.07.2017Operation6.2.2 Adjustment to reference pressureFor adjustment, the vacuum gauge must be evacuated to a pre‑cisely known reference pressure.> Check the accuracy of the ultimate vacuum with a calibratedreference vacuum gauge.> A faulty reference pressure measurement is transmitteddirectly to the gauge.Sensor adjustment at reference pressureIMPORTANT!1. Connect the gauge to a vacuum pump which pumps to aprecise vacuum, e. g., down to 2 mbar.+ 2. Press and hold the UP/DOWN key at the switched‑off gaugeand then press ON/OFF.5 Display adjustment mode ‑ only active for approx. 20seconds.Display only at vacuum less than < 20 mbar (15 Torr).3. Press key UP/DOWN as often as the required pressure unitis displayed, e. g., 2 mbar. Adjustment range 0–20 mbar (0–15 Torr) Changing pointer direction with MODE key= decrease value / = increase value5 Value corresponds to current reference pressure.