Validation & Calibration
Page
53
of 82
7.4.1 PAH validation methods
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PAH measuring chamber: Used for inline measurements
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PAH calibration chamber: Used for calibration and validation
NOTICE
The calibration kit includes a PAH calibration chamber.
Sensor performance in the measuring and calibration chamber can be
doublechecked by use of a test media, for example, bottled water.
Validation routines must follow the planned maintenance schedule found
in section 8 in this manual to ensure the correct performance of the PAH
sensor.
Calibration of the PAH sensor is only required when:
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The displayed validation value deviates more than ±5% of sensor range or
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The displayed validation value deviates more than ±5% of the nominal
standard test concentration, whose value is no less than 80% of the
sensor range.
7.4.2 PAH sensor ranges
There are 3 different ranges available for PAH sensor:
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Low Range: 0-100 µg/l
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High Range: 0-800 µg/l
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Dual Range: 0-100/800 µg/l
NOTICE
In dual range mode, the PAH sensor will automatically choose the range
required.
