Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 167)

Operating Instructions Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 147
4.13.7.5. Flow Calibration
The flow calibration allows the user to adjust the values of the sample flow rates as they
are displayed on the front panel and reported through COM ports to match the actual
flow rate measured at the sample inlet. This does not change the hardware measurement
of the flow sensors, only the software-calculated values.
To carry out this adjustment, connect an external, sufficiently accurate flow meter to the
sample inlet. Once the flow meter is attached and is measuring actual gas flow, press:
Adjust these values
until the displayed
flow rate equals the
flow rate being
measured by the
independent flow
meter.
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL
SETUP
SETUP X.X PRIMARY SETUP MENU
CFG ACAL DAS RNGE PASS CLK MORE EXIT
SETUP X.X SECONDARY SETUP MENU
COMM VARS
DIAG EXIT
Exit at
any time
to return
to main
the
SETUP
menu
DIAG SIGNAL I / O
NEXT ENTR EXIT
Exit returns
to the
previous menu
Repeat Pressing NEXT until . . .
DIAG FLOW CALIBRATION
PREV NEXT ENTR EXIT
DIAG FCAL ACTUAL FLOW: 480 CC / M
0 4 8 0 ENTR EXIT
ENTR accepts the
new value and
returns to the
previous menu
EXIT ignores the
new value and
returns to the
previous menu
DIAG FLOW SENSOR TO CAL: SAMPLE
SAMPLE OZONE
ENTR EXIT Choose between
sample and ozone
flow sensors.
SETUP X.X ENTER DIAG PASS: 818
8 1 8
ENTR EXIT