Myron L 9PTK - Manual (Page 32)

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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. 22.
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.
d. Press or to step the displayed value toward the standard’s
value 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.
3. Resistivity Calibration
Resistivity is the reciprocal of Conductivity. To calibrate resistivity,
calibrate conductivity for the solution type you wish to measure (ref.
Conductivity or TDS Calibration, pg. 27).
4. Reloading Factory Calibration (Cond or TDS)
If calibration is suspect or known to be incorrect, and no standard
solution is available, the calibration value can be replaced with the
original factory value for that solution. This “FAC” value is the same for
all Ultrameter IIIs, and returns you to a known state without solution
in the cell. The “FAC” internal electronics calibration (which bypasses
the electrodes and cell) is not intended to replace calibration with
conductivity/TDS standard solutions. If another solution type requires
resetting, change solution type and repeat this procedure.
a. Press or .
b. Press . (If in “User” solution mode — press cal key
twice if in Conductivity, and three times if in TDS to skip over
tempco and ratio adjustments.)
c. Press key until “Fac” appears and release.