HF scientific Chlorine Dioxide Pocket Photometer Field Portable - Manual (Page 7)

24055 (1/09)
Rev. 1.1
3
Figure 2 is a depiction of the PPD-2 Powder Pop Dispenser. The following sections will
describe the functionality of the Dispenser and its relationship with the Pocket
Photometer.
The Powder Pop Dispenser is an important accessory to
the instrument, providing convenient and accurate doses of
DPD reagent on demand.
To use the Dispenser, simply flip the protective cap out of
the way, invert the dispenser and shake gently, place over
the top of the cuvette then firmly, depress the Dispenser
button to deliver the reagent. The protective cap should be
replaced after use.
Figure 2
1.2 The Display
All of the items that can appear on the display are shown in Figure 3. The display is used
for reporting the chlorine concentration level and to provide user guidance. The display
also has other icons that are used to communicate various messages.
Figure 3 – Display used in the instrument.
1.3 The Instrument and Touch Pad (see Figure 1)
The touch pad has three buttons: ON/OFF, ZERO, and READ. The ON/OFF button is
used to turn the instrument on and off. The ZERO button is used to establish a base
reading (ZERO) for the water to be tested. The READ button is pressed to take a reading
after color has been developed in the sample.