Teledyne 6200E - Sulfides Analyzer - Manual (Page 163)

Model 6200E Instruction Manual Calibration Procedures
M6200E Rev: A1 163
7.3. Manual Calibration Checks
Informal calibration checks, which only evaluate but do not alter the analyzer’s response curve, are
recommended as a regular maintenance item and in order to monitor the analyzer’s performance.
The following section describes the basic method for manually checking the calibration of the Model
6200E analyzer in H
2
S measurement mode. The same method may be used to manually check the
calibrate the M6200E analyzers configured for SO
2
measurement by substituting SO
2
span gas for
the H
2
S span gas listed. See Section 7.8 for instructions for performing calibration checks on
analyzers configured for multigas measurement mode.
To carry out a calibration check rather than a full calibration, follow these steps.
STEP ONE: Connect the sources of zero air and span gas as shown in Figure 7.1.
STEP TWO: Perform the zero/span calibration check procedure:
SAMPLE H2S STB=XXX.X PPB H2S =XXX.X
< TST TST > CAL SETUP
ACTION:
Record theH
2
S
concentration
reading.
ACTION:
Supply span gas to the instrument
SAMPLE H2S STB=XXX.X PPB H2S =XXX.X
< TST TST > CAL SETUP
ACTION:
Record the H 2 S
concentration
reading.
Wait until H2S
STB is below
0.5 ppb. This
may take
several minutes.
The value of H2S
STB may jump
significantly.
Wait until it falls
below 0.5 ppb. This
may take several
minutes.
SAMPLE H2S STB=XXX.X PPB H2S =XXX.X
< TST TST > CAL SETUP
The SPAN key appears during the transition from zero to
span. You may see both keys.
SAMPLE RANGE = 500.0 PPB H2S =XXX.X
< TST TST > CAL SETUP
Scroll the display to the
H2S STB test function.
ACTION:
Supply the instrument with zero gas.