Pro He
TM
Alarm Helium Analyzer
NUVAIR
Page
13
www.nuvair.com
5.0. Threshold Alarms
The He analyzer will alarm once the gas goes over the alarm set point (AL1 or AL2) .
Once the gas is above the AL1 or AL2 set point the analyzer will go into alarm mode until
the gas value drops below the set point during the gas analyzation. Should the Helium
gas trip the alarms (AL1 or AL2) the instrument will go into alarm mode and will activate
the (optional) relays output (open collector max 100mA) and the internal buzzer. The
display will show the trespassed alarm and the actual measured value. To stop the
audible alarm, press any key. In this event the Pro He Analyzer will remain in alarm mode
until the analyzed value reads below the AL1 and AL2 set points.
The relay output typically is used to shut down the compressor. Nuvair can supply the
necessary components to adapt your compressor to the relay or provide them at the time
of install on a new compressor.
6.0. Powering Off
At the home or gas reading screen, hold down the On/Off button for a couple of seconds.
The Analyzer will display “OFF” and then go blank.
7.0. Factory Reset
In case it is necessary to reset the Pro He Analyzer to the factory settings, or the
displayed Helium Percentage does not correlate with the content of your calibration test
gas, follow this procedure to reset the unit:
1.
Power on the unit by holding down the On/Off button until the display turns on.
2.
Wait until the display has stabilized and the unit is ready to analyze.
3.
Record any alarm levels or Auto Off time that are programmed and retain for later use.
Cycle back to the home screen.
4.
Press the On/Off and Adjust buttons at the same time and hold until the display
changes.
5.
Release the buttons. The unit should now be reset.
6.
Test the Analyzer with calibrated test gas to ensure accuracy. If the analyzer still does
not display an accurate reading, contact Nuvair for repair or replacement of the unit.
7.
If the analyzer is now accurate, you may now re-program any alarms and Auto Off
time.
In case of reset, the instrument will delete all the alarms settings and the Auto Off time
value. Before using the instrument after a reset, it may be necessary to program again
the alarm values and the Auto Off value. You should confirm your calibration with a
certified testing gas immediately after a reset before using.
