Teledyne 100E, Instruction Manual, Page: 134 / 258

Calibration Procedures Model 100E Instruction Manual
132 045150102 Rev XB1
NOTE
If the ZERO or SPAN keys are not displayed during zero or span calibration, the
measured concentration value is too different from the expected value and the
analyzer does not allow to zero or span the instrument.
Consult Section 11.3 for more information on calibration problems.
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. 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 STABIL=XXX.X PPB
SO2=X.XXX
< TST TST >
CAL SETUP
ACTION:
Record the SO
2
concentration
reading.
ACTION:
Supply span gas to the instrument
SAMPLE STABIL=XXX.X PPB
SO2=X.XXX
< TST TST > CAL SETUP
ACTION:
Record the SO
2
concentration
reading.
Wait until
STABIL
is
below 0.5 ppb.
This may take
several minutes.
The value of
STABIL
may jump
significantly.
Wait until it falls
below 0.5 ppb. This
may take several
minutes.
SAMPLE
STABIL=XXX.X PPB
SO2=X.XXX
< 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 SO2=X.XXX
< TST TST >
CAL SETUP
Scroll the display to the
STABIL
test function.
ACTION:
Supply the instrument with zero gas.