Hanna Instruments PCA 310 User Manual
Page 20
20
Return Line Installation
The return hose fitting is a 12 mm (1/2”) hose barb on the
bottom of the regulator output port and should always be
connected even when pressure is below 1 bar.
INSTALLING THE INPUT FILTER
In order to ensure maximum accuracy of measurements, it is
recommended to have always clear sample, with suspended
particles smaller than 0.5 μm. This can be achieved by in-
stalling two filters before the sample input.
The type of filters de-
pends on the quality of
the water: the first filter
should have 50-100
μm pore size, whereas
in any case the second
filter, the one closer to
the analyzer, has to be
0.5 μm.
For correct installing procedure and maintenance, see the
instructions of filters.
INSTALLING THE pH AND ORP PROBES
To mount the pH and ORP probes, first tunr off the analyzer.
Unscrew the closing caps from the electrode holder and remove