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Instruction Manual
760008-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-11
Model NGA 2000 TO2
d. Basic Controls and Setup
The Basic Controls and Setup menu is
used to set the range, initiate and exit a
quick start and exit the sleep mode.
See section 0 to change the begin and
end concentration values for each of the
four ranges.
Figure 3-13. Basic Controls and Setup
Sleep Mode
The TO2 analyzer goes into sleep mode if
an over range condition occurs to protect
the sensor. The “Sleep mode timer:”
counts down after sleep mode starts for
the duration of 2700 seconds (45 min-
utes). To exit sleep mode prematurely,
move the cursor to the “Exit sleep mode !”
function and press the ↵ key.
Operation Status
This NGS display variable is not func-
tional on the TO2 analyzer and will remain
on “Normal.”
From the Measure menu press the F5 key
(BasicCal) to reach the “Basic Controls and
Setup” menu.
Alternately, from the Main menu select the
“Analyzer basic controls (calibration) & setup”
line.
See Section 1-1a for a description of the
quick start process.
Range number:
To select one of the four ranges of the TO2
analyzer, Move the cursor to the “Range
number:” line and press the ↵ key. Change
the range number using the ↑ and ↓ keys
and then press the ↵ key again to save the
selection.
Move the cursor to the “Range upper limit:”
line to see the full scale concentration limit
for the selected range.
TO2 37.50 ppm
Measure
Status… Back…
-- Basic Controls and Setu
p
--
Range number: 3
Range upper limit: 100 ppm
Initiate quick start!
Exit quick start!
Exit Sleep mode!
Next quick start possible after: 0 s
Quick start timer: 45 s
Sleep mode timer: 2700 s
O
p
eration status: Normal
TO2
Dis
p
la
y
Status… Main… Channel BasicCal
0.00 Ran
g
e: 3 50.00
37.50
ppm O2
Electrolyte level: OK
Temp current: 263 uA 0.0 600
Range: 3
Sensor Current: 0.0500 uA 0.0000 100.0000