Teledyne 402REU - Hydrocarbon analyzer - Manual (Page 54)

Teledyne Analytical Instruments A-2
Appendix Model 402 R-EU
Application Data
Model Number:
Serial Number:
Ranges Of Analysis:
Output Signal:
Start-Up Span Setting:
Control Panel Pressure Settings:
Comments:
Blanket Air:
Fuel:
Sample:
Bypass Flowrate: A minimum of 0.25 SCFH is indicated on
the integral flowmeter
Recommended Support Gases: The accessory gases should all be laboratory
analyzed and certified as to their hydrocar-
bon content.
Blanket Air: Water pumped, hydrocarbon free, com-
pressed air.
Fuel: A hydrocarbon-free composition of 40%
hydrogen and 60% nitrogen.
Zero Gas: Water pumped, hydrocarbon free (certified)
Span Gas: _______ppm methane in ______ (certified)
The span gas contains a known amount of methane impurity. The span
gas must be certified as to its methane equivalent impurity.
IMPORTANT: For the best possible results, zero and span gases that are
representative of the parent (or background) gas should
always be used.
This is particularly true in applications where the analyzer is being used
to analyze a number of different samples with varying concentrations of
oxygen. The geometry and temperature of the flame will be somewhat
dependent on the oxygen content of the sample. Alterations in the flame
configuration will lead to differences in output readings. The application
calls for this analyzer to be used on oxygen, air, and a composition of oxy-
gen and nitrogen. For the best possible results, TAI recommends that zero
and span gases representative of each of these samples be used to standardize
the analyzer.