Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 62)

4 Operation Model 2020
4-28 Teledyne Analytical Instruments
Dpt INPUT OUTPUT
0 Ш.ШШ Ш.ШШ
Repeat the above procedure for each of the data points you are setting
(up to nine points: 0-8). Set the points in unit increments. Do not skip
numbers. The linearizer will automatically adjust for the number of points
entered.
When you are done, ESCAPE . The message,
Completed. Wait for
calculation, appears briefly, and then the main
System screen returns.
To end the session, send:
st
st
to the analyzer from the computer.
4.8.2.3 Auto Mode Linearization
To linearize in the Auto Mode, you must have on hand a separate
calibration gas for each of the data points you are going use in your linear-
ization. First, the analyzer is zeroed and spanned as usual. Then, each
special calibration gas, for each of the intermediate calibration points, is
flowed, in turn, through the sensor. As each gas flows, the differential value
for that intermediate calibration point is entered from the front panel of the
analyzer.
Note: The span gas use to span the analyzer must be >90% of the
range being analyzed.
Before starting linearization, perform a standard calibration. See
section 4.4. To enter data:
From the MAIN MENU screen—
1. Use UP/DOWN to select
ALGORITHM , and
Enter .
2. Select and Enter
SETUP.
3. Enter
AUTO from the Calibration Mode Select screen.
The Auto Linearize Mode data entry screen appears.
1.95 % H2 — N2
Input(Ø) :2.00
5. Use the UP/DOWN keys to set the proper value of calibration
gas, and Enter . Repeat this step for each cal-point number as it
appears in the
Input (x) parentheses.