Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 146)

Model 9110TH NOx Analyzer Operating Instructions
Teledyne Analytical Instruments 126
4.13.5.8. Setting the Reporting Range Scale for an Analog Output
Once the DAS parameter has been set, the top end of the scale must be selected. For
concentration values this should be equal to the expected maximum value for the
application. The analog channel will scale its output accordingly.
EXAMPLE:
DAS parameter being output: NXCNC1
Maximum value expected: 800 ppm
Output range; 10 V
Output: ... 0 ppm 0.000 V
100 ppm 1.250 V
200 ppm 2.500 V
400 ppm 5.000 V
750 ppm 9.375 V
Note Regardless of how the reporting range for an analog output channel is
set, the instrument will continue to measure NO, NO
2
and NO
x
accurately
for the entire physical range of the instrument (See Section 4.13.4.2 for
information on Physical range versus reporting range).
Each output channel can be programmed for a separate gas with independent reporting
range.
EXAMPLE:
A1  NXCNC1 (NOx Range 1) 0-1000 ppm NOX.
A1  NXCNC2 (NOx Range 2) 0-1250 ppm NOX.
A3  NOCNC1 (NOx Range 1) 0-500 ppm NO.
A4  N2CNC1 (NO2 Range 1) 0-750 ppm NO
2
.
Note While Range 1 for each gas type is often referred to as the LOW range and
Range 2 as the HIGH range, this is simply a naming convention. The
upper limit for each range can be set to any value.
EXAMPLE: A1  NXCNC1 (NOx Range 1) 0-1500 ppm NOX
A2  NXCNC2 (NOx Range 2) 0-1000 ppm NOX