2 measuring the ph value, Measuring the ph value – Xylem handylab pH 12 User Manual

Page 17

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handylab pH 12

Operation

17

ba75368e04

01/2011

The temperature measurement is absolutely essential for a reproducible pH
measurement. If the measurement is made without a temperature sensor,
proceed as follows:

4.2.2

Measuring the pH value

Setting the

resolution

The measuring instrument shows the pH value with a resolution of 0.01 or
0.001. (Default setting is 0.01). To change the resolution, press the <M> key
while pressing the <RUN/ENTER> key.

1

Measure the current temperature of the test sample using a
thermometer.

2

Enter the temperature on the instrument: Set the temperature
value of the test sample using <

> <>.

1

Perform the preparatory activities according to section 4.2.1.

2

Immerse the pH electrode in the test sample.

3

Press the <M> key until pH appears on the status display. The
pH value appears on the display.

mV/pH

mol/L

8

Auto Store

TempError

RCL

LoBat

AutoCal DIN

CalError

ARng AR

AutoCal TEC ConCal

Time

Baud

Day.Month No.

Ident

Year

1

U

%

°F

S

mg/L

% ppm

ISE

8

4

2

2

99

6

°C

TP

pH

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