Xylem MULTI 3400 MULTI-PARAMETER METERS Manuel d'utilisateur télécharger pdf (Page 30)

Operation Multi 3400i

4.3.5 D. O. calibration

Why calibrate? D. O. probes age. This changes the slope of the D. O. probe. Calibra-

tion determines the current slope of the probe and stores this value in

the instrument.

When to calibrate? z After connecting another D. O. probe

z When the probe symbol flashes (after the calibration interval has ex-

pired).

Calibration procedure The calibration is performed in water vapor-saturated air. Use the

OxiCal

-SL air calibration vessel (accessories) for the calibration.

AutoRead The calibration procedure automatically activates the AutoRead func-

tion. The AR display indicator flashes. The calibration process is fin-

ished when AR stops flashing.

Displaying the calibra-

tion data

You can view the data of the last calibration on the display. The pro-

ceeding is described on page 48.

Printing the

calibration protocol

The calibration record contains the calibration data of the current cali-

bration. You can transmit the calibration protocol to a printer via the se-

rial interface (see page 51).

Note

You can automatically print a calibration record after the calibration. To

do so, connect a printer to the interface according to section 4.7.2 be-

fore calibrating. After a valid calibration, the record is printed.

Sample printout:

CALIBRATION PROTOCOL

02.03.01 14:19

Device No.: 12345678

CALIBRATION 02

Cal time: 02.03.01 / 14:19

Cal interval: 14d

OxiCal Tauto AR

Relative Slope: 0,88

Probe: +++

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Xylem MULTI 3400 MULTI-PARAMETER METERS Manuel d'utilisateur Page 30