Portable Oxygen Analyzer
Installation
Teledyne Analytical Instruments
13
pressure gauge starts to fall, close the sample flow control
valve.
6.
Repeat steps 4 and 5 seven (7) times.
The sample delivery system is now purged and ready for calibration
or analysis. Keep the cylinder valve open to maintain system
pressurization.
Note: Make sure there are no leaks in the sample line and
regulator connections. Check also the cylinder connection
for leaks.
2.5 Set the Sample Flowrate
Once the system has been calibrated, the instrument can be brought
to the analysis site and the sample gas line can be connected to the unit.
Using the quick disconnect fittings supplied, connect the vent line
followed by the sample line to the rear panel. See Figure 2-1.
Once the sample gas is flowing, set the flow rate to 0.2-2.5 SCFH.
2.6 External Signal
A 0-1 VDC output signal is included with the Model 3110XL.
When installed, the output signal represents the percentage of oxygen in
the current range. For instance, if the range was set for 0 to 10 ppm, then
0.1 V would represent 1.0 ppm, 0.2V would be 2.0 ppm; 0.3V would be
3.0 ppm etc.
This output signal, when installed, is accessible from the rear panel.