Ametek Land 4500 MKIII, User Manual

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B - 5
Model 4500 MkIII Opacity and Dust Monitor
User Guide
B3 Glossary of Terms
Op Opacity
O.D. Optical Density
Dust Dust Density
Averaging Time period used to calculate block average
Loop O/P Current loop output reading in mA
Last Zero Last zero calibration value
Last Upscale Last upscale calibration value
Cal. Drift Drift of signal between calibrations (range 0.1 to 1.0)
Version Software Version Number
Blank A blank line
So Signal Detector Offset
Sf Signal Detector Flood Value
Sm Signal Detector Measurement Value
Ro Reference Detector Offset
Rf Reference Detector Flood Value
Rm Reference Detector Measurement Value
C Calibration Constant (slope)
X Calibration constant (offset)
B Balance correction
G Gain correction factor
Q Uncorrected transmission factor
Dust Gain Constant relating Optical Density to Dust Density.
Dust Offset Dust Density zero offset (usually zero)
Dust Gain 2 Quadratic term relating optical density to dust density
(usually zero)
OP Damper Low pass digital filter applied to output
PLCF Pathlength Correction Factor
Last Cal. Data stored from the latest calibration
Zero Comp. Opacity compensation due to dust build on the lens
Gravimetric O.D Average Optical Density calculated during gravimetric test
Running In Positioning the zero reflector or upscale filter to an active
position
Running Out Positioning the zero reflector or upscale filter to an
inactive position