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Thermal Conductivity Analyzer Part I: Control Unit
Part I 4-11
Teledyne Analytical Instruments
The leftmost digit (under Dpt) is the number of the data point being moni-
tored. Use the ∆∇ 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 ACTU-
AL concentration of the span gas being simulated.
If the OUTPUT value shown is not correct, the linearization must be
corrected. Press
ESCAPE
to return to the previous screen. Select and Enter
SET UP to Calibration Mode screen.
Select algorithm
mode : AUTO
There are two ways to linearize: AUTO and MANUAL: The auto mode
requires as many calibration gases as there will be correction points along the
curve. The user decides on the number of points, based on the precision re-
quired.
The manual mode only requires entering the values for each correction
point into the microprocessor via the front panel buttons. Again, the number of
points required is determined by the user.
4.4 The
Zero
and
Span
Functions
(1) The Model 2010B can have as many as three analysis ranges plus a
special calibration range (Cal Range); and the analysis ranges, if more than one,
may be programmed for separate or identical gas applications.
(2) If all ranges are for the same application, then you will not need the Cal
Range. Calibrating any one of the ranges will automatically calibrate the others.
(3) If: a) each range is programmed for a different gas application, b) your
sensor calibration has drifted less than 10 %, and c) your Cal Range was cali-
brated along with your other ranges when last calibrated, then you can use the
Cal Range to calibrate all applications ranges at once.
If your Model 2010B analyzer fits the paragraph (3) description, above,
use the Cal Range. If your analyzer has drifted more than 10 %, calibrate each
range individually.
CAUTION: Always allow 4-5 hours warm-up time before calibrat-
ing, if your analyzer has been disconnected from its
power source. This does not apply if the analyzer
was plugged in but was in STANDBY.