Advanced Sensors OIW-EX Series User Manual

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OIW-HBO-0002-EX-005
OIW EX SERIES-SIDE STREAM
OPERATION MANUAL
Rev. 004 MAY 2015
Calculating the correct factor from the laboratory results (as standard) and the measurement readings is described with
the following examples. A correction factor is the calculated as the average difference between the laboratory results
and the analyzer measurement readings. Then this average is used as a multiplication factor to calculate the actual
displayed reading allowing the ‘gain’ settings to be adjusted.
A. If the OIW analyzer is measuring LOWER than the lab
Example Results:
Sam
p
le No Lab Readin
g
(
pp
m) OIW Readin
g
(
pp
m) (Lab/OIW)
13 21.50
29 42.25
318 151.20
427 251.08
518 141.28
Avera
g
e Difference = 1.46
If the ppm reading = 55
The new adjusted reading should be 55 x 1.46 = 79.7
Now increase the gain to obtain a ppm reading of 79.7.
B. If the OIW analyzer is measuring HIGHER than the Lab
Sam
p
le No Lab Readin
g
(
pp
m) OIW Readin
g
(
pp
m) (Lab/OIW)
12 30.66
2 4 9 0.44
315 180.83
425 270.92
514 180.77
Avera
g
e Difference = 0.72
If the ppm reading = 55
The new adjusted reading should be 55 x 0.72 = 39.6
Now decrease the gain to obtain a ppm reading of 39.6
NOTE: If an analysed sample shows a very large difference from all the other samples taken, then this
sample should not be included

Advanced Sensors OIW-EX Series Specifications

General

Brand	Advanced Sensors
Model	OIW-EX Series
Category	Measuring Instruments
Language	English