Myron L PS9TK - Manual (Page 25)

21
of table salt and tap water (ref. Cleaning Sensors, 2. pH/ORP,
pg. 48). Do not allow pH/ORP sensor to dry out.
H. Measuring ORP
The P
OOL
P
RO
features the ability to measure the activity of oxidizing or
reducing chemicals in solution as ORP mV. The instrument also includes
an innovative Free Chlorine Equivalent (FC E ) feature (Measuring Free
Chlorine Using FC E , pg. 22) that uses ORP and pH to measure free
available chlorine (FAC) concentration in ppm. ORP mV and ppm of
free available chlorine (FAC) are the two most commonly used sanitizer
units of measure in water quality management.
1. ORP / FC E Mode Selection
The P
OOL
P
RO
allows the user to choose between measuring oxidizing
sanitizers using either ORP mV or as parts per million (ppm) of equivalent
free chlorine. Use ORP to directly measure the oxidizing power of all
sanitizers like ozone, bromine, peracetic acid or chlorine. Use FC E to
measure the strength of oxidizing sanitizers as ppm of equivalent free
chlorine. To select between ORP and Free Chlorine modes:
1.
Press .
2. Press and hold for approximately 3 seconds.
The current preference for ORP units of measure is displayed. Factory
setting for this preference is ORP mV.
3. Press the or keys to toggle between mV (standard
ORP mode) and FC E ppm. The setting chosen is displayed.
PPM
4. Press any parameter key to exit ORP unit preference selection
or let the PS9 time out. ORP unit preference will be saved.