Myron L PS9TK - 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. 48). 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. 54). Selection determines
the temperature correction of conductivity and calculation of TDS
from compensated conductivity (ref. Cond. Conversion to TDS, pg.
57).
B. The 3 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 MIN/SALT,
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. 57).