Teledyne 2000A-EU, Operating Instructions Manual, Page: 62 / 86

4 Operation Model 2000A-EU
4-24 Teledyne Analytical Instruments
Use the < > arrow keys again to move the blinking to
APPLICATION
and
press
Enter
.
Select rng to set appl:
—> Ø1 Ø2 Ø3 CAL <—
Use the
∆∇
arrow keys to increment/decrement the range number to 0, 1,
2, or 3, and press Enter .
Imp: Ø2 Bck: N2
FR—Ø TO—1ØØ %
Use the < > arrow keys to move to Imp: (impurity), Bck: (background),
FR: (from—lower end of range), TO: (to—upper end of range), and PPM or %.
Use the
∆∇
arrow keys to increment the respective parameters as desired.
Press
Enter
to accept the values and return to
Analyze
mode. (See note
below.) Repeat for each range you want to set.
Note: The ranges must be increasing from low to high, for example,
if Range 1 is set to 0–10 % and Range 2 is set to 0–100 %, then
Range 3 cannot be set to 0–50 % since that makes Range 3
lower than Range 2.
Ranges, alarms, and spans are always set in either percent or ppm units, as
selected by the operator, even though all concentration-data outputs change
from ppm to percent when the concentration is above 9999 ppm.
Note: When performing analysis on a fixed range, if the concentra-
tion rises above the upper limit as established by the operator
for that particular range, the output saturates at 1 V dc (or 20
mA). However, the digital readout and the RS-232 output
continue to read regardless of the analog output range.
To end the session:
If started with the RS-232, send:
st<enter>
st<enter>
to the analyzer from the computer.
If started through the front panel, turn the instrument off and back on.
Press the Enter key twice to return to the Analyze mode.
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 normal-