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Installation
4.3.2 Setting up the intake line and strainer
Note: If site conditions do not permit the intake to slope downward from the sampler to the sample
source, disable the liquid sensors and calibrate the sample volume using the Timed Calibrate
method when programming the sampler.
For each sampling location, the intake line should be as short as practical, and be free of
any sharp bends, coils, or loops. Install the intake line with a downward slope from the
sampler to the sample source because:
•
This will ensure the complete drainage of the intake line when it is air-purged before
and after each sample, and will help to prevent cross-contamination of the individual
samples.
•
Complete drainage is important in freezing conditions, as any liquid slugs that remain
could freeze and plug the line.
Place the sample intake and strainer in the mainstream of the sampling source, in an
area of turbulent and well mixed flow. Refer to
.
Note: Vertical lift should not exceed 27 ft.
Also, you must account for the vertical location of the intake. A position too near the
surface may yield excess lighter materials, while a position too near the bottom may yield
excess heavy materials. The constituents of interest must be considered when
positioning the intake strainer.
Goodnal STP ST041 Pre Treatment (Sigma 900 MAX All Weather Refrigerated Sampler) Vendor Manual
Q-Pulse Id VM373
Active 29/10/2013
Page 31 of 122
