Clock symbol
Adjusting the operating time and measuring cycle
☞ The time until automatic switching off (operating time) can be set by the user within a range of 1 to
999 minutes (factory-set: 15 minutes) or continuous operation "On".
To decrease operating time:
To adjust 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 disappears and the
preselected operation time will start again.
➨ Press key MODE to select the time setting mode.
☞ The clock symbol and the actually set operating time in min-
utes are displayed.
☞ The arrow in the right direction indicates that the time can be
increased by using key UP/DOWN.
➨ Press key UP/DOWN to increase operating time.
➨ Press key MODE to change arrow direction to the left.
➨ Press key UP/DOWN to decrease operating time.
➨ Press key ON/OFF to confirm.
☞ The device switches to mode "adjustment of measuring
cycle".
☞ The measuring cycle can be chosen between Automatic, 1
measurement in 3s, 1 measurement in 1s and 3 measure-
ments in 1s.
☞ The measuring cycle as from 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 adjustment.
➨ Press key ON/OFF to confirm the measuring cycle and to
terminate mode.
11.12.2002