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GENERAL DESCRIPTION
The Hanna PCA 300 and PCA 301 series of Chlorine Ana-
lyzers are microprocessor-controlled, process analyzers which
continuously monitor a sample stream for Chlorine content.
The PCA 300 series monitor Free Chlorine and the PCA 301
series Total Chlorine in the 0 to 5 mg/L (ppm) range.
In the DPD Colorimetric method, N, N-Diethyl-p-phenylene-
diamine indicator and a buffer are mixed with the sample.
The resulting chemical reaction causes a magenta color to
form. The color intensity is proportional to the concentration
of Chlorine. The color intensity is measured photometrically
(with a light beam and a photodetector) and converted to
Chlorine concentration, in mg/L, which is displayed on the
front panel, four-digit, LED display.
Indicator and buffer reagent bottles are placed directly into
the instrument case. With a sampling period of 5 minutes,
reagents need to be replenished about once a month. The
reagent bottles are easily visible through the transparent win-
dow to allow the operator to check the reagent levels.
The cases of PCA 300 and PCA 301 meet NEMA 4X, 12
and 13 standards. Molded fiberglass polyester has outstand-
ing chemical and temperature resistance.
External mounting feet provide wall mounting capability and
a seamless gasket assures a watertight and dust-tight seal.
The electrical and hydraulic connections (except for
PCA 300AC and PCA 301AC OEM models) are made
through the side of the enclosure.
The front cover is secured with two lockable
latches.
