Myron-l 6PFCE and 4P Manual de usuario descargar pdf (Pagina 23)

e. Press once to conrm 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. 18).

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 IIs,

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.

d. Press to accept the factory calibration setting.

5. pH Calibration (6PFC

)

IMPORTANT: Always “zero” your Ultrameter II with a pH 7 buffer solution

before adjusting the gain with acid or base buffers, i.e., 4 and/or 10, etc.

a. pH Zero Calibration (6PFC

)

1. Rinse sensor well and cell cup 3 times with 7 buffer solution.

2. Rell both sensor well and cell cup with 7 buffer solution.

3. Press to verify the

Figure 6

BUFFER

CAL

pH calibration. If the display

shows 7.00, skip the pH

Zero Calibration and

proceed to section b. pH

Gain Calibration.

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Myron-l 6PFCE and 4P Manual de usuario Pagina 23