Principle Of Operation: Sample Processing; Hardware Description; Table 2-1: Analyzer Specifications - ABB NGC8200 User Manual

Figure 1-2: Typical multi-stream installation
1.3

Principle of operation: sample processing

To process a sample, a gas sample is extracted from the pipeline. The sample conditioning module
removes any particulates or liquids entrained in the sample. The sample conditioning module also acts
as a bypass loop to ensure that sample lag time is minimized. The sample is then transported to the
analyzer and analyzed using gas chromatography.
Analysis results provide mole percent values for each gas component. These values are used to
perform energy calculations. Calculated values include: gas compressibility, real relative density,
Btu/CV value, liquid GPM, Wobbe index, methane number and several other optional calculated
values. Gas compressibility selections include NX-19, AGA-8 detail, single virial summation factor, ISO
summation factor and none (a factor of one is used).
Analysis results are stored in the analyzer. Once a sample processing cycle is completed, the sample
is vented from the analyzer. Analysis results can be collected directly from the analyzer using the
operator interface (PCCU) or the analyzer can be configured to transmit results to other systems using
any of the supported communication protocols.
2

Hardware description

Table 2-1: Analyzer specifications

Supply Voltage
Recommended AC Power
Supply
Maximum Instantaneous
Current (see note 1)
Avg. Power Consumption
After Startup (see note 2)
Environment Temperature
Repeatability
12 VDC
No. aux. heater With aux.
heater
10.5–16 VDC 10.5–16 VDC
14.5 V 14.5 V
7 Amp 8.2 Amp
Up to 7 Watts Up to 53 Watts
Storage
Normal Operation
With environmental enclosure
±0.125 Btu at 1,000 Btu (±0.0125%) ambient;
±0.25 Btu at 1,000 Btu (±0.025%) over temperature range of 0 F to
131 F (-18 C to 55 C)
21 01 51 0MN A H | NG C 82 0 0 A N D P GC 10 00 US ER MA NUA L | 1 1
24 VDC
No aux. heater With aux.
heater
21–28 VDC 21–28 VDC
25 V 25 V
3.5 Amp 5.2 Amp
Up to 7 Watts Up to 64 Watts
-22 F to 140 F (-30 C to 60 C)
0 F to 131 F (-18 C to 55 C)
-40 F to 131 F (-40 C to 55 C)