Myron L 9PTK with FCE Free Chlorine - Manual (Page 28)

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nOte: If the reading takes longer than 1 minute to stabilize,
press
after 1 minute to prevent Auto-OFF feature from
disturbing the measurement process. Annunciators will alert
you when either the pH or ORP of the final FC E ppm value are
Out of Range (“-Or-”).
7. Press ms to store reading in memory if desired.
4. FC E Best Practices
For best results it is recommended that you:
1. Take 3 consecutive FC E measurements and record the
readings.
2. Calculate the average of the 3 measurements. Use this value.
3. Ignore measurements that are significantly different from the
others. Ex: 3.20 ppm, 1.15 ppm, 3.10 ppm
imPOrtant: After use, fill pH/ORP sensor well with Myron L
pH Sensor Storage Solution and replace protective cap. If
Myron L pH Sensor Storage Solution is unavailable, you can
use a strong KCl solution, a pH 4 buffer, or a saturated solution
of table salt and tap water (ref. Cleaning Sensors, 2. pH/ORP,
pg. 52). Do not allow pH/ORP sensor to dry out.
vi. sOlUtiOn selectiOn
A. Why Solution Selection is Available
Conductivity, resistivity, and TDS require temperature correction to
25°C values (ref. Standardized to 25°C, pg. 59). Selection determines
the temperature correction of conductivity and calculation of TDS from
compensated conductivity (ref. Cond. Conversion to TDS, pg. 61).
B. The 4 Solution Types
On the left side of the display is the salt solution characteristic used to
model temperature compensation of conductivity and its TDS conversion.
generally, using KCl for conductivity, NaCl for resistivity, and 442 (Natural
Water characteristic) for TDS will reflect present industry practice for
standardization. This is how your instrument is shipped from the factory
(ref. Solution Characteristics, pg. 61).
The User selection allows a custom value to be entered for the
temperature compensation of conductivity and also the conversion ratio
if measuring TDS.
C. Calibration of Each Solution Type
There is a separate calibration for each of the 4 solution types. Note
that calibration of a 442 solution does not affect the calibration of a NaCl
solution. For example: Calibration (ref. Conductivity or TDS Calibration,