Teledyne 238 - Thermal conductivity analyzer - Manual (Page 17)

3-3 Teledyne Analytical Instruments
Thermal Conductivity Analyzer Operation 3
3.6 Normal Operation
For routine operation of the analyzer, you should perform the follow-
ing checks:
• Sample flow: Check the sample flowrate daily to insure proper
operation.
• Reference gas flow: Check the reference gas flowrate daily—
and the reference supply cylinder periodically—to insure against
accidental depletion. Whenever it is necessary to replace the
reference gas supply, the analyzer standardization procedures
must be repeated.
• Standardization: The analyzer should be restandardized on a
monthly schedule as a check of its performance.
3.7 Maintenance
Since there are no moving parts in the analyzer, no routine mainte-
nance is required other than normal care of the instrument. The checklist
above should be adequate to keep the analyzer functioning properly for
many years.