6 | Operation LINXON
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6.4.6 Setting pressure limits for operation mode "Sniffing"
Standby > Configuration > Test settings > Pressure limits for sniffing mode
The pressure limits are only defined for the sniff mode ("Sniff" operation mode). The
monitoring unit for the sniffer line uses the pressure limits.
If you call up the menu during the measurement, the current pressure is also
displayed.
Options Value range (min./max.) Comments
Min. pressure 0.15 … 0.60 mbar The warning "Pressure too
low" appears if the
pressure falls below this
value while in the
measuring mode.
Max. pressure 0.25 … 0.65 mbar The warning "Pressure too
high" appears if the
pressure exceeds this
value while in the
measuring mode.
6.4.7 Setting the setpoint and alarm
Standby > Configuration > Setpoint and alarm
• Define a setpoint and specify how the device is to respond to certain measured
values.
• You can also set an alarm delay time under "Trigger alarm" and "Setpoint".
In certain applications (e.g., when evacuating a "test chamber system"), it can be
useful to suppress an alarm for a certain time period.
After pressing START, the acoustic signal can be activated as soon as the leak rate
falls below the warning threshold or an alarm delay time expires or the alarm type
"Prop. leak rate"/"Pinpoint" or "Sniff" is set.
Options Value range (Min. Max.) Comments
Operation mode Prop. leak rate The frequency of the
audible signal is
proportional to the bar
graph display.
The frequency range is
300 Hz to 3300 Hz.
Trigger alarm
0 min, 10 min
If the leak rate is below the
warning limit, no sound is
output.
If the leak rate is greater
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