User Manual
14
15
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 signicantly different from the
others. Ex: 3.20 ppm, 1.15 ppm, 3.10 ppm
IMPORTANT: After use, ll 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. 32). Do not allow pH/
ORP sensor to dry out.
VI. SOLUTION SELECTION
A. Why Solution Selection is Available
Conductivity, MIN/SALT, and TDS require temperature correction to
25°C values (ref. Standardized to 25°C, pg. 37). Selection determines
the temperature correction of conductivity and calculation of TDS from
compensated conductivity (ref. Cond. Conversion to TDS, pg. 40).
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 Mineral/
Salt, and 442 (Natural Water characteristic) for TDS will reect present
industry practice for standardization. This is the setup as shipped from
the factory (ref. Solution Characteristics, pg. 40).
C. Calibration of Each Solution Type
There is a separate calibration for each of the 3 solution types. Note
that calibration of a 442 solution does not affect the calibration of a
NaCl solution. For example: Calibration (ref. Conductivity, MIN/SALT
or TDS Calibration, pg. 17) is performed separately for each type
of solution one wishes to measure (ref. Conductivity/TDS Standard
Solutions, pg. 36).