Table 7-10: Epa Zero - Teledyne 6400A Instruction Manual

TAI Model 6400A SO
Zero calibration procedure.
Table 7-10: EPA Zero Calibration Procedure
Step Number
1.
2.
3.
4.
5.
1. Adjust the SO
SO span concentration can be determined by measuring the cylinder and diluent flows and
2
computing the resulting concentration.
Calculate the expected concentration as follows.
F
= ×
gas
[ SO ]
2
F
total
where;
[SO ] = cylinder gas concentration, ppm
2 gas
F = SO
gas
F = total(gas + diluent) flow rate, cc/min.
total
[SO ] = expected SO
2
Enter the expected concentration [SO
concentration need not be re-entered each time a calibration is performed unless it is changed.
Analyzer Operator Manual, 02164, Rev. G
2
Action
Press CAL
Wait 10 min
Press ZERO
Press ENTR
Press EXIT
concentration to approximately 80% of the URL of the range. The expected
2
[ SO ] ----------------------------------- Equation 7.1
2 gas
gas flow rate, cc/min.
2
concentration, ppm
2
Comment
The 6400A enters the calibrate mode from sample mode.
Allow the zero gas through the sample port.
Wait for reading to stabilize at the zero value.
To select a zero calibration.
Pressing ENTR actually changes the equations
6400A returns to the CAL menu.
] using the procedure in Table 7-12. The expected span
2
7-14