Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 60)

4 Operation Model 2020
4-26 Teledyne Analytical Instruments
4.8.2 The Curve Algorithm Screen
The Curve Algorithm is a linearization method. It provides from 1 to 9
intermediate points between the ZERO and SPAN values, which can be
normalized during calibration, to ensure a straight-line input/output transfer
function through the analyzer. (Before setting the alogorithm curve, each
range must be Zeroed and Spanned).
Each range is linearized individually, as necessary, since each range
will usually have a totally different linearization requirement.
To linearize the ranges, you must first perform the four steps indicated
at the beginning of section 4.8 Programming. You will then be in the MAIN
MENU and select ALOGORITHM.
4.8.2.1 Checking the linearization
From the MAIN MENU screen, select
ALGORITHM, and
Enter .
Sel rng set algo
—> Ш1 Ш2 Ш3 <—
Use the UP/DOWN key to select the range: 01, 02, or 03. Then press
Enter .
Gas use: H2 — N2
Range: Ø -10 %
Enter again.
Algorithm setup:
VERIFY SETUP
UP/DOWN to select and Enter
VERIFY to check whether the lineariza-
tion has been accomplished satisfactorily.
Dpt INPUT OUTPUT
Ш Ш.ШШ Ш.ШШ
The leftmost digit (under
Dpt) is the number of the data point being
monitored. Use the UP/DOWN keys to select the successive points.
The
INPUT value is the input to the linearizer. It is the simulated output
of the analyzer. You do not need to actually flow gas.
The
OUTPUT value is the output of the linearizer. It should be the
ACTUAL concentration of the span gas being simulated.
If the
OUTPUT value shown is not correct, the linearization must be
corrected. ESCAPE to return to the previous screen. Select and Enter
SET
UP to Calibration Mode screen.