Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 43)

UV Fluorescence SO2 Analyzer Calibration and Check
Teledyne Analytical Instruments 31
Calibration and Calibration Check Procedures
Calibration procedures for the 6400EH are the same as those for the
6400E. One exception to this statement is that the 6400EH has a special
valve option, Zero and Two Span Point Valve Option - OPT 52 (See
Section 5.1), that allows a mid-span point be checked.
7.1 Manual Calibration with the Zero and Two Span
Point Valve Option (OPT 52) installed
Note: It is only possible to calibrate to the high span gas. The low
span gas is only used for calibration checks.
Zero and Span calibrations using the Zero and two Span Valve
option are similar to that described in Section 7.2, except that:
 Zero air and both span gas is supplied to the analyzer through the
zero gas and span gas inlets rather than through the sample inlet.
 The zero and cal operations are initiated directly and
independently with dedicated keys (
CALZ
&
CALS )
STEP ONE: Connect the sources of zero air and span gas to the
respective ports on the rear panel (see Figure 3-2 of this manual).
STEP TWO: Set the expected SO
2
high span gas value: