Calibration Checks With Zero/Span Valves - Teledyne T200H User Manual

Calibration Procedures

5.6. CALIBRATION CHECKS WITH ZERO/SPAN VALVES

STEP ONE:
STEP TWO:
Set the Display to show
the NOX STB test
function.
This function calculates
the stability of the NO/NO
x
measurement
Wait until NOX STB
falls below 0.5 ppm.
This may take several
minutes.
The ZERO and/or SPAN
keys will appear at various
points of this process.
It is not necessary to press
them.
Analyzers enters
ZERO cal
mode.
196
Zero and span checks using the zero/span valve option are similar to that described in
Section 5.4, except that zero air and span gas are supplied to the analyzer through the
zero gas and span gas inlets from two different sources.
Informal calibration checks, which only evaluate without altering the analyzer's
response curve, are recommended as a regular maintenance item and to monitor the
analyzer's performance. To carry out a calibration check rather than a full calibration,
follow these steps:
To perform a manual calibration check with zero/span valve:
Connect the sources of Zero Air and Span Gas as shown in section 5.4.
Perform the zero/span check.
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL CALZ CALS
Toggle TST> button until ...
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL CALZ CALS
Allow zero gas to enter the sample port
at the rear of the analyzer.
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL CALZ CALS
SAMPLE GAS TO CAL:NOX
NOX O2
SAMPLE RANGE TO CAL:LOW
LOW HIGH
ZERO CAL M NOX STB= XXX.X PPM NOX=XXX.X
<TST TST> ZERO CONC
Record NO , NO, NO or O zero point
X 2 2
readings
Teledyne API - Model T200H/T200M Operation Manual
SETUP
ZERO CAL M NOX STB= XXX.X PPM
<TST TST> ZERO
SAMPLE A1:NXCNC1=100PPM
SETUP
< TST TST > CAL CALZ CALS
Allow span gas to enter the sample port
at the rear of the analyzer.
SAMPLE A1:NXCNC1=100PPM
SETUP
< TST TST > CAL
SAMPLE GAS TO CAL:NOX
ENTR EXIT
NOX O2
SAMPLE RANGE TO CAL:LOW
ENTR EXIT
LOW HIGH
SPAN CAL M NOX STB= XXX.X PPM
EXIT
<TST TST> ZERO SPAN CONC
Record NO , NO, NO
X
SPAN CAL M NOX STB= XXX.X PPM
<TST TST> ZERO
NOX=XXX.X
CONC EXIT
NOX=XXX.X
SETUP
NOX=XXX.X
CALZ CALS SETUP
ENTR EXIT
ENTR EXIT
NOX=X.XXX
EXIT
or O span point
2 2
readings
NOX=XXX.X
CONC EXIT
07270D DCN7141
Return to
SAMPLE
Display
Wait until NOX STB
falls below 0.5 ppm.
This may take several
minutes.
Analyzers enters
SPAN cal
mode.
Return to
SAMPLE
Display