Ametek 931S, Operator'S Manual

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Specifications | 2-1
SPECIFICATIONS
The Specifications listed in this chapter apply to both Model 931S and
Model 932S Analyzers, except where noted.
Methodology
Model 931S Analyzers:
Dual wavelength, high resolution, non-dispersive UV.
Model 932S Analyzers:
Multi-wavelength, high resolution, non-dispersive UV.
Standard Range Measuring Cell
Maximum ranges are based on sample (expressed in cm). Minimum
ranges are 1/25 of maximum ranges for standard Measuring Cells (5 cm to
81.2 cm) and 1/8 for high concentration Measuring Cells (1 mm to 10 mm).
Response Time
90 % response in 30 seconds or less (excluding sample system)
Accuracy
Excludes drift and temperature effects:
± 1.0 % full-scale of standard ranges
± 2.0 % full-scale of standard ranges (H
2
S and NH
3
applications)
Accuracy is determined by comparing analyzer response to a known stan-
dard gas after a calibration has been performed.
Repeatability
<± 0.5 % full-scale of standard ranges