vacuubrand DVR 2pro Instructions For Use Manual

34 N°: 999341_EN_DVR 2pro/12.07.2017Operation6.2 Sensor adjustment, in generalThe gauge is intended for continuous operation.Adjustment is not part of the everyday operation. Perform adjust‑ment only when the measured values differ from reference normalor when irregularities in pressure reading emerge.Mostly the adjustment under vacuum will do  see 6.2.3 Adjust-ment under vacuum on page 386.2.1 Adjustment at atmospheric pressureFor correct adjustment the exact atmospheric pressure at yourlocation is important. Exact data are provided, for example, bythe weather service or an airport in your area. A precise counterbarometer if available also displays the current atmospheric pres‑sure.Sensor adjustment at atmospheric pressure1. Remove gauge from vacuum port and make sure that atmo‑spheric pressure is present.+ 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, as long as no further key is pressed.