Myron L 9PTK with FCE Free Chlorine - Manual (Page 25)

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of table salt and tap water (ref. Cleaning Sensors, 2. pH/ORP,
pg. 52). Do not allow pH/ORP sensor to dry out.
I. Measuring ORP
The Ultrameter III 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 Ultrameter III 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 unit time out. ORP unit preference will be saved.