Adjustment To Reference Pressure - vacuubrand DVR 3pro Instructions For Use Manual

Operation
IMPORTANT!
+
34
6.2.2

6.2.2 Adjustment to reference pressure

Adjustment to reference pressure
For adjustment, the vacuum gauge must be evacuated to a pre‑
cisely known reference pressure.
> Check the accuracy of the ultimate vacuum with a calibrated
reference vacuum gauge.
> A faulty reference pressure measurement is transmitted
directly to the gauge.
Sensor adjustment at reference pressure
1. Connect the gauge to a vacuum pump which pumps to a
precise vacuum, e. g., down to 2 mbar.
2. Press and hold the UP/DOWN
and then press ON/OFF
5 Display adjustment mode ‑ only active for approx. 20
seconds.
Display only at vacuum less than < 20 mbar (15 Torr).
3. Press key UP/DOWN UP/DOWN
is displayed, e. g., 2 mbar.
Adjustment range 0–20 mbar (0–15 Torr)
ƒ
Changing pointer direction with MODE key
ƒ
= decrease value /
5 Value corresponds to current reference pressure.
UP/DOWN key at the switched‑off gauge
ON/OFF.
as often as the required pressure unit
MODE key
20901134_EN_DVR 3pro_V1.4_060420
= increase value