Teledyne 6020 - Photometric analyzer User Manual

Page 54

3 Operation

Model 6020

3-30 Part I

Teledyne Analytical Instruments

3.8.2.2 Auto Mode Linearization

To linearize in the Auto Mode, you must have on hand a separate calibra-

tion gas for each of the data points you are going use in your linearization. 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 used 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

System

Functions screen—

1. Select

ALGORITHM

, and

Enter

2. Select and

Enter

SETUP

Enter

AUTO

from the Calibration Mode Select screen.

The Auto Linearize Mode data entry screen appears.

19.5 %

( ) :20.00

5. Use the UP/DOWN switch 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.

6. Repeat step 5 for each of the special calibration gases, from the

lowest to the highest concentrations.

Escape

when done.

To end the session, send:

st
st

to the analyzer from the computer.