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• DV-41 Operating Manual • 630.851.9444 • [email protected]
Unit Selection (UNIT)
When the alarm menu is active, a constant pressure value equivalent to 1000 microns is displayed using the
currently selected units (EG: 133.31 for Pascals). The current selection is shown at the top of the main display
screen.
Available unit selections are: Microns, PSIA, inHg, Pascals, Torr, mTorr and mBar.
Factory default setting is “MICRONS”.
To scroll the selection, use the SCROLL UP and SCROLL DOWN buttons.
To cancel, press the POWER button.
To select and store the setting shown, press the MODE button. When a setting is stored, you will be returned to
main menu selections. Press POWER to return to normal operation mode.
Low Alarm Setting (AL--LO)
The Low Alarm setting sets the pressure level where an alarm will be sounded. Setting a specific alarm level
selection DOES NOT make the alarm active; it specifies the pressure level BELOW which the alarm will sound
once the user enables the Low Limit Alarm (press MODE and SCROLL DOWN buttons to enable).
Available settings are: 50, 100, 250, 500, 1000, 1250, 1500, or 2000 microns.
Factory default setting is “500” microns.
Default values are listed in microns, however values will be displayed in the current units selected. For example,
if the user defined Unit Selection setting is Pascals, units displayed will be: 7, 14, 33, 66, 133, 166, 200, and
266 (The Pascal conversion of the 50 – 2000 micron values).
The “ALARM”, “LOW” icon will be displayed to indicate you are setting up the Low Limit Alarm.
To scroll the selection, use the SCROLL UP and SCROLL DOWN buttons.
To cancel, press the POWER button.
To select and store the setting shown, press the MODE button. When a setting is stored, you will be returned to
main menu selections. Press POWER to return to normal operation mode.
Low Limit Alarm
MODE and SCROLL DOWN buttons enable the Low Limit Alarm.
Low Limit Alarm can be enabled in all cases including when the pressure is in OVER RANGE except for when
the sensor is not connected.
An enabled Low Limit Alarm will display the “LOW”, “ALARM” icon on the main display screen, and will disable
the High Alarm setting.
If Low Limit Alarm is enabled and the pressure is less than or equal to the preset, user defined Low Alarm
setting limit value, the alarm will alert with a beep sound every second and “ALARM”, “LOW” icon will flash.
Beeping and flashing will continue even if the pressure rises above the Low Limit Alarm setting. Press any
button to turn off the alarm.
High Alarm Setting (AL--HI)
The High Alarm setting sets the pressure level where an alarm will be sounded. Setting a specific alarm level
selection DOES NOT make the alarm active; it specifies the pressure level ABOVE which the alarm will sound
once the user enables the High Limit Alarm (press MODE and SCROLL UP buttons to enable).