Myron-l 6PFCE and 4P Manual de usuario descargar pdf (Pagina 22)

2. Calibration Limits

There are calibration limits. A nominal “FAC” value is an ideal value

stored by the factory. Attempts to calibrate too far, up or down, from

there 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. 36).

C. Calibration Procedures

1. Conductivity or TDS Calibration

a. Rinse conductivity cell three times with proper standard (KCl,

NaCl, or 442) (ref. Cond/TDS Standard Solutions, pg. 38). For

user calibration see User Calibration Conductivity/TDS below.

b. Rell conductivity cell with same standard. KCl-7000 shown.

c. Press or

, then

Figure 5

°C

KCl

COND

CAL

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 conrm 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. 14.

a. Rinse conductivity cell three times with your standard.

b. Rell 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.

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Myron-l 6PFCE and 4P Manual de usuario Pagina 22