Teledyne T101, Руководство по эксплуатации, Страница: 77 / 375

Teledyne ML – T101 Operation Manual Operating Instructions
73
4.4.4.8. Dilution Ratio
The dilution ratio is a software option that allows the user to compensate for any dilution
of the sample gas before it enters the sample inlet.
1. Select reporting range units: Follow the procedure in Section 4.4.4.7.
2. Select the range: Use the procedures in Section 4.4.4.3 – 4.4.4.6.
Make sure:
that the SPAN value entered is the maximum expected concentration of
the undiluted calibration gas, and
that the span gas is either supplied through the same dilution inlet system
as the sample gas or has an appropriately lower actual concentration.
For example, with a dilution set to 100, a 1 ppm gas can be used to
calibrate a 100 ppm sample gas if the span gas is not routed through the
dilution system. On the other hand, if a 100 ppm span gas is used, it
needs to pass through the same dilution steps as the sample gas.
3. Set the dilution factor as a gain (e.g., a value of 20 means 20 parts
diluent and 1 part of sample gas):
SAMPLE RANGE = 500.0 PPB H2S =XXX.X
< TST TST > CAL SETUP
SETUP C.3
PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP C.3 RANGE CONTROL MENU
MODE
SET UNIT DIL EXIT
DIL only appears
if the dilution ratio
option has been
enabled
SETUP C.3 DIL FACTOR: 1.0 GAIN
0 0 0 1 .0
ENTR EXIT
Toggle these buttons to set the
dilution factor.
This is the number by which the
analyzer will multiply the H
2
S
concentrations of the gas passing
through the reaction cell.
SETUP C.3 DIL FACTOR: 20.0 GAIN
0 0 2
0 .0 ENTR EXIT
EXIT ignores the
new setting.
ENTR accepts the
new setting.
SAMPLE ENTER SETUP PASS : 818
8 1 8 ENTR EXIT
The analyzer multiplies the measured gas concentrations with this dilution factor and
displays the result.
NOTE
Once the above settings have been entered, the instrument needs to be recalibrated using one of the
methods discussed in Section 6.