Xylem MULTI 3400 MULTI-PARAMETER METERS Manuel d'utilisateur télécharger pdf (Page 18)

Operation Multi 3400i

4.2.2 Measuring the pH value

AutoRead AR

(Drift control)

The AutoRead function (drift control) checks the stability of the mea-

surement signal. The stability has a considerable impact on the repro-

ducibility of the measured values.

For identical measurement conditions, the following criteria apply:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the pH electrode in the test sample.

3 Press the <▲> <▼> keys until pH appears in the status display.

The pH value appears on the display.

4 When measuring without a connected temperature sensor:

Options:

z Determine the current temperature using a thermometer

and, while keeping the <RUN/ENTER> key depressed, en-

ter this temperature value with <▲> <▼>.

z TP display indicator not displayed, socket for the second

probe is free:

Connect the second probe (Oxi or Cond) and immerse it in

the same sample. TP flashes, the temperature is automati-

cally measured using the second probe.

Tref20

Lin

Cal

SalOU

mg/l

mV/pH

Sal

AutoCal DIN

Tref25

nLF

AutoCal TEC

RCL

Auto

Store

LoBat

ARng

Time

Baud

Day.Month No.

Ident

Year

mbar

TDS

Reproducibility Response time

Better than 0.02 > 30 seconds

1 Call up the pH measuring mode with <▲> <▼>.

2 Activate the AutoRead function with <AR>.

The current measured value is frozen (hold function).

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 84 85

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Xylem MULTI 3400 MULTI-PARAMETER METERS Manuel d'utilisateur Page 18

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