AUX E&H Series Instruções de Operação descarregar pdf (Página 56)

5.10.1 Wet calibration

For access to the CALIBRATION menu, please enter Code 22.

Coding Field

Selection or range

Factory setting (bold)

Display Info

C(1)

Function group

CALIBRATION:

pH calibration

Only if A1 = pH.

Calibration with two different

buffer solutions

C11

Enter calibration

temperature

25.0 °C

–50.0 ... 150.0 °C

Only if B1 = MTC.

C12

Enter the pH value

of the first buffer

solution

Buffer value of the

last calibration

pH 0.00 ... 14.00

The displayed value can be

edited.

The value is given by the buffer

solution in question.

Place the electrode in the indicated buffer. ATC mode: the

temperature sensor must also be immersed in the buffer

solution. Then start calibration with CAL. The current

measured value is displayed.

1. Manual continuation: When the value is stable, the user

can accept the calibration in buffer solution 1 by pressing the

CAL key.

2. Automatic continuation: Takes place when the value is

stable (difference between values measured

≤ 0.05 and value

constant over 10 s). If the value does not stabilise within 5

min, error 44 is set, and the calibration is aborted.

Connect the potential matching

line with the buffer in case of

symmetrical measuring mode.

C13

Calibration is

performed

Acceptance when stability is

reached: ≤ ±pH 0.05 for more

than 10 s.

C14

Enter the pH value

of the second

buffer solution

Buffer value of the

last calibration

pH 0.00 ... 14.00

The buffer must have a different

pH value to buffer 1. Plausibility

check takes place.

Buffer 2: proceed as for buffer 1.

C15

Calibration is

performed

Acceptance when stability is

reached ≤ ±pH 0.05 for more

than 10 s.

C16 Slope is displayed

Glass: 59.16 mV/pH

38.00 ... 65.00 mV/pH

Antimony: 59.16 mV/pH

25.00 ... 65.00 mV/pH

IsFET: 59.16 mV/pH

38.00...65.00 mV/pH

Factory settings are printed in bold face;

base version does not include functions in

italic.

CALIBRAT

25.0 C11

MTC temp.

°C

7.00 C12

Buffer 1

7.00 C13

Buffer 1

4.00 C14

Buffer 2

4.00 C15

Buffer 2

59.16 C16

Slope

mV/pH

Instrument configuration Liquisys M CPM 223 / 253

54 Endress+Hauser

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 91 92

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AUX E&H Series Instruções de Operação Página 56

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