Instruction manual

Instruction Manual
760006-A
September 2001
4-6 System SIO Module Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 Platform
Setting the signal value for 0% output
It is possible to set the signal value for 0%
output and for 100% output so as to out-
put only a portion of the entire range.
Example: Range from 0 to 1000 ppm 0%
value to be 400 ppm, 100% value to be
700 ppm. Analog output normally: 0V = 0
ppm, 10V = 1000 ppm. After changing
the output scaling: 0V = 400 ppm, 10V =
700 ppm.
NOTE
The signal range of the analog output
should not be less than the smallest
range of the channel. Otherwise the
analog output may exhibit excessive
noise.
Figure 4-6. SIO Analog Output Setup – Setting Signal Value For 0% Output
Figure 4-7. SIO Analog Output Setup – Setting Signal Value For 100% Output
CLD 7.50 ppm
Measure
Back…
-- Analo
g
Output Setup --
Output number: 1
Choose signal source mdoule…
Choose signal…
Signal value for 0% output: 400.00
Signal value for 100% output: 100.00
Output current: 0…20 mA
Hold output during calibration: No
Signal name: Sample flow
Current signal value: 8.60
Source module: CLD: 1.0
More…
Move the cursor to Signal value for 0%
output:, and adjust the value to 400.
CLD 7.50 ppm
Measure
Back…
-- Analog Output Setup --
Output number: 1
Choose signal source mdoule…
Choose signal…
Signal value for 0% output: 400.00
Signal value for 100% output: 700.00
Output current: 0…20 mA
Hold output during calibration: No
Signal name: Sample flow
Current signal value: 8.60
Source module: CLD: 1.0
More…
Move the cursor to Signal value for 100%
output:, and adjust the value to 700.
(If the measurement range is changed, the
settings done in this menu will revert back to
the standard values of the range. See ap-
propriate Analyzer module manual for proce-
dures on changing range values.)