Myron L 9PTK with FCE Free Chlorine - Manual (Page 33)

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calibrate beyond its calibration limits. For all other functions, attempts
to calibrate too far up or down from the ideal “Fac” value stored in the
unit by the factory will cause the displayed value to be replaced with
“Fac”. If you accept it (press the cal key), you will have the original
default factory calibration for this measurement. The need to calibrate
so far out that “Fac” appears indicates a procedural problem, incorrect
standard solution, a very dirty cell cup or an aging pH/ORP sensor (ref.
Troubleshooting Chart, pg. 54).
C. Calibration Procedures
1. Conductivity or TDS Calibration
a. Rinse conductivity cell 3 times with proper standard (KCl, NaCl,
or 442) (ref. Cond/TDS Standard Solutions, pg. 56). For user
calibration see User Calibration Conductivity/TDS below.
b. Refill conductivity cell with same standard. KCl-7000 shown.
c. Press or , then press ; “cal” icon will
appear on the display (see Figure 5).
d. Press or to step the displayed value toward the
standard’s value (7032 > 7000) or hold a key down to scroll
rapidly through the reading.
e. Press once to confirm new value and end the calibration
sequence for this particular solution type. If another solution
type is also to be measured, change solution type now and
repeat this procedure.
2. User Calibration Conductivity/TDS
Instrument must be in User mode, see Solution Selection, pg. 24.
a.
Rinse conductivity cell three times with YOUR standard.
b. Refill conductivity cell with same standard.
c. Press or , then press twice in COND/
three times in TDS. The “cal” icon will appear on the display.