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E5080 Series Cryogen Monitor User Guide
To adjust the pressure
• Press Center/Enter then Down. Press Left/Right to alter
the value.
• Unit is mB and the step size is 1mB.
• When the operating pressure is adjusted via the front
panel, an automatic adjustment is also made to the upper
and lower pressure alarm settings. These are set 5 mB
above and below the operating pressure.
To change the Helium Fill mode
• Press Center/Enter then Down, Down, Center/Enter.
Press Left/Right to alter the state.
• This procedure turns On or Off the fast sample action
which occurs about every 40 seconds as required when
helium filling.
• This has a 90- minute time out period after which normal
samples on an eight hour basis occur.
To mute an audible alarm condition
• To silence the audible alarm while it is active, press the
front panel down arrow key pad.
• Hold the key pressed for approximately five seconds and
release it.
• The sounder is then silenced.
• A message is automatically added to the Error Message
stream as displayed on the LCD screen, to the effect that
the audible alarm is muted.
• When the alarm situation is corrected, the mute is
automatically reset to Off, thus enabling any subsequent
audible alarm.
2
Operation
17
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