Dynamic Multipoint Span Calibration - Teledyne T101 Operation Manual

Teledyne ML – T101 Operation Manual

7.5. DYNAMIC MULTIPOINT SPAN CALIBRATION

Wait until
SO2 STB falls
below 0.5 ppb.
This may take
several minutes.
Dynamic calibration involves introducing gas samples of known concentrations to an
instrument in order to record the instrument's performance at a predetermined sensitivity
and to derive a calibration relationship. A minimum of three reference points and one zero
point uniformly spaced covering 0 to 90 percent of the operating range are recommended
to define this relationship.
The analyzer's recorded response is compared with the known concentration to derive the
calibration relationship.
To perform a precision check, the instrument set up, sources of zero air and sample gas
should conform to those described in Section 6.2.
Follow the procedures described in section 6.2 for calibrating the zero points.
For each mid point:
SAMPLE* RANGE = 500.000 PPB
< TST TST > CAL
SAMPLE SO2 STB =X.XXX PPB
< TST TST > CAL
Allow calibration gas diluted to proper concentration for
Midpoint N to enter the sample port
SAMPLE SO2 STB =X.XXX PPB
< TST TST > CAL CALZ
SPAN CAL M RANGE = 500.0 PPB
< TST TST > ZERO SPAN
SO2 =X.XXX
SETUP
SO2 =X.XXX
SETUP
ACTION:
SO2 =X.XXX
CALS SETUP
SO X.XXX
2
CONC EXIT
Press EXIT to
Return to the
Main SAMPLE
Display
EPA Protocol Calibration
Set the Display to show the
SO2 STB test function.
This function calculates the
stability of the SO
2
measurement
Record the SO
2
reading as
displayed on the
instrument's front
panel
ACTION:
Allow Calibration Gas diluted to
proper concentration for
Midpoint N+1 to enter the sample
port
195