Pro He
TM
Alarm Helium Analyzer
NUVAIR
Page
9
www.nuvair.com
4.0 Operation
Prior to each Analyzer use:
1) Turn unit on (hold on/off for 3 sec) and monitor Display for low battery warning. Replace
battery immediately if warning appears. The display will show “On”, “(version of software)
and then “Att” and then display the current He
level sensed by the analyzer sensor.
2) Cycle through the current settings of the analyzer.
a.
Hold down the “Prog” button for 2 seconds then use the “On/Off” button to cycle
through the two Threshold Alarm Values set, Full Scale Value, Auto shutdown time,
and end.
b.
Adjust Alarm values at this time if needed see
“4.2”
3) Confirm calibration of Analyzer using “Calibrated Test Gas”
Tip: You can check the battery life and current temperature by holding Adjust button for 3
seconds. The display will alternate from battery life to current temperature (Celsius) twice before
returning the home screen.
Gas, even under moderate pressures, can cause extreme bodily harm. Never allow any
gas stream to be directed at any part of your body.
Never expose the sensor to pressures above atmospheric pressure (0 P.S.I.) or you may
cause damage to the sensor and/or receive false readings. Damaged Sensors will not
provide accurate gas analysis. Inaccurate gas analysis can lead to serious personal
injury or death.
The Pro He
TM
can be used to monitor an enclosed space or to analyze a regulated gas sample
flow, the contents of a gas cylinder, or the flow from a regulator:
•
If monitoring an enclosed space, simply remove the Flow Adapter Cap to expose the Sensor
face to the atmosphere and allow 15 seconds for the Display reading to stabilize.
•
If analyzing a gas flow, the Sample Flow Method is the preferred method. The flow rate
must equal 0.5 to 1 L/min at atmospheric pressure (1 bar). To produce this flow, a Flow
Restrictor and Regulator may be required. Contact Nuvair if you need assistance.
Low Battery
Indication
Ready For
Gas Analyzing
