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Instruction Manual
760008-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-21
Model NGA 2000 TO2
Sensor model:
Adjustable for both “Standard” and “Sta-
bel” models in the following ranges:
0-50 ppm
0-100 ppm
0-500 ppm
0-1000 ppm
0-5000 ppm
0-10000 ppm
0-5%
0-10%
0-25%
The “Stabel” sensor model contains a
special electrolyte that is less susceptible
to small concentrations of acids in the
sample stream.
Clamp low PVA to 0.02:
This parameter is used for very low oxy-
gen concentration levels where the sen-
sor current may be unstable about zero.
Normally this would be set to “No.”
ppm to mg/Nm3 conversion
factor:
The ppm to mg/Nm
3
conversion factor in
the range of 1 to 100000. The conversion
factor depends on the sample gas used.
Lower [Upper] explosion limit
(LEL) [UEL]:
The parameters are used for the CLD and
PMD modules and do not apply to the
TO2 They should both be set at 0.00%.
Temperature compensation at
span gas:
This parameter is used to set the upper
temperature limit for the sensor which can
occur at the upper range of oxygen con-
centration. The range is 10-1000 and the
default setting is 100. When the tem-
perature exceeds this level the module
goes into sleep mode.