Teledyne OT-3 - Manual (Page 29)

Trace Oxygen Analyzer Installation
Teledyne Analytical Instruments 21
A flowmeter and flow restrictor are parts of the sample system and
assist in setting the flow of the gas. The restrictor is installed upstream
of the analyzer while the flowmeter is installed on the vent side.
Adjust the sample pressure at the regulator to provide a flow rate of
0.4-0.5 SCFH. It is important that the sample vent connection does not
restrict the sample flow. The sensor is designed to operate at
atmospheric pressure. Restricting the sample vent line will pressurize
the sensor, alter the O
2
reading, and reduce the sample flow.
Sample and Span pressure should not exceed 2000 psig (13.8 Mpa)
Figure 3-4: OT-3 Sample System
3.6 Installation Checklist
Before connecting the instrument to the power source and turning it
on, make sure you have:
• Correctly installed the Sample and Exhaust gas lines
• Checked for leaks
• Set the flow
Once the above checks have been made, you can connect to the
power source. The instrument is now ready for operation.