AUX E&H Series Instruções de Operação descarregar pdf (Página 55)

5.10 Calibration

This function group is used to calibrate the

transmitter. Two types of calibration are

possible:

• Calibration by means of measurement in

two calibration solutions with a known pH

value.

• Calibration by entering daa for slope and

zero point

• For redox measurement by entering the

mV value or two different % values.

Note:

• If the calibration procedure is

aborted by pressing the PLUS and

MINUS keys at the same time

(return to C19, C25 or C36) or if

the calibration is faulty, then the

previous calibration data is

reinstated. A calibration error is

indicated by the “ERR” message

and flashing of the sensor symbol

on the display.

Repeat the calibration!

• The instrument is automatically

switched to hold during calibration

(factory setting).

• An offset entered by the user is

automatically cancelled when the

calibration is accepted.

• If the slope or zero point is outside

the ranges defined in C16 and

C17, error 32 is activated for slope

or error 33 for zero. The electrode

should be then checked and

replaced if necessary.

Coding Field

Selection or range

Factory setting

Display Info

I2 Tag description Only for communication.

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Tag

PM253E5B.CHP

Liquisys M CPM 223 / 253 Instrument configuration

Endress+Hauser 53

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