vacuubrand DVR 2 Instructions For Use Manual

Also see for DVR 2: Instructions for use

➨ Press key UP/DOWN simultaneously with keyON/OFF.☞ The vacuum gauge switches to the adjustmentmode (indicated by a warning triangle).☞ The arrow in the right direction indicates thatthe pressure value can be increased by usingkey UP/DOWN.➨ Press key UP/DOWN to increase the readingto actual atmospheric pressure.12.12.2002The equipment has been adjusted at the factory. In general, there is no need for adjustment by the userbecause of the excellent longtime stability.Depending on operation conditions, type of application and accuracy requirements, an inspection andreadjustment may become necessary.Admit air to the vacuum gauge. Make sure that the vacuum connection at the vacuum gauge is at atmosphericpressure.Attention: Determine the exact actual atmospheric pressure, e. g. by using an accurate barometer or getaccurate reading from the weather service, e. g. at the next airport, etc. (take into account the difference inaltitude between e. g. airport and laboratory).To reduce the reading:➨ Press key MODE to change arrow direction tothe left.➨ Then press key UP/DOWN to reduce the read-ing.Evacuate the vacuum gauge to a pressure <0.5 mbar (<0.4 Torr) e. g. by applying a good rotary vane pump.➨ Press key UP/DOWN simultaneously with keyON/OFF.☞ The vacuum gauge switches to the adjustmentmode (indicated by a warning triangle)☞ The reading is adjusted automatically to ”zero”.Attention: Adjustment under vacuum with a pressure higher than 0.5 mbar (0.4 Torr) reduces the accuracyof measurement. If the pressure is significantly higher than 0.5 mbar (0.4 Torr), adjustment to a referencepressure is recommended.➨ Press key ON/OFF to confirm adjustment andto terminate mode.+➨ Press key ON/OFF to confirm adjustment andto terminate mode.Adjustment under vacuum+Adjustment at atmospheric pressureReadjustment of the vaccum gauge