VACUUBRAND DVR 3 - Manual (Page 10)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual: 999072 / 12/01/2011
page 10 of 18
Adjusting the operating time and the measuring cycle
➨ Press key ”MODE” to select the time setting mode.
☞ The clock symbol and the currently set operating time in
minutes are displayed.
To decrease the operating time:
➨ Press key ”MODE” to change the arrow to the left.
➨ Press key ”UP/DOWN” to decrease the operating time.
➨ Press key ”ON/OFF” to confirm.
☞ The device switches to the mode ” Adjusting the measur-
ing cycle”.
☞ The measuring cycle can be set to Automatic, 1 meas-
urement in 3s, 1 measurement in 1s and 3 measurements
in 1s.
☞ The arrow to the right indicates that the time can be in-
creased using key ”UP/DOWN”.
➨ Press key ”UP/DOWN” to increase operating time.
☞ The measuring cycle as of the last operation (factory-set:
”A”) is displayed.
➨ Press key ”UP/DOWN” to select the measuring cycle: A
= Automatic (automatic determination of the measuring
cycle; frequent measurement in case of great pressure
change), S1 = 1 measurement in 3s, S2 = 1 measurement
in 1s, S3 = 3 measurements in 1s.
☞ The flashing of the arrow (only ”S1”, ”S2” or ”S3”) symbol-
izes the frequency of the pressure measurement).
☞ Press key ”MODE” to change the direction of the adjust-
ment.
Adjusting the measuring cycle:
☞ The vacuum gauge is equipped with an automatic sleep
mode to save battery power when the instrument is not
used. When the clock symbol appears on the display, the
vacuum gauge will switch off automatically after approx. 1
minute.
➨ Press key ”ON/OFF”. The clock symbol will disappear and
the preselected operation time will start again.
Clock symbol
☞ The time until automatic switching off (operating time) can be set by the user within a range from
1 to 1000 minutes (factory-set: 15 minutes) or continuous operation ”On” can be selected.
Upon switching on, the absolute pressure (total pressure, in-
dependent of gas type) ranging from 1 mbar to 1080 mbar is
displayed in the selected pressure unit (Torr, mbar or hPa).
☞
The pressure transducer was adjusted using factory stand- The pressure transducer was adjusted using factory stand-
ards. In general, there is no need for readjustment by the
user because of the excellent longtime stability (see sec-
tion ”Readjustment”).
Pressure measurement