pH value
MultiLab 4010-1W
26
ba76141e07
08/2018
5
pH value
5.1
Measuring
5.1.1
Measuring the pH value
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
Stability control
(AutoRead)
& HOLD function
The stability control function (
AutoRead
) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproduc-
ibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic
Stability control
is switched off.
You can start the
Stability control
manually at any time, irrespective of the set-
ting for automatic
Stability control
(see section 9.5.3 A
, page 74) in the
System
menu.
To start the
Stability control
function manually, the HOLD function must be
enabled.
Hold function
1.
Connect the IDS pH sensor to the meter.
The pH measuring window is displayed.
2.
If necessary, select the measured parameter with
<M>
.
3.
Adjust the temperature of the solutions and measure the current tem-
perature if the measurement is made without a temperature sensor.
4.
If necessary, calibrate or check the IDS pH sensor.
5.
Immerse the IDS pH sensor in the test sample.
25.0
7.007
pH
°C
0
14
01.02.2014
08:00
i
USB output
1.
Freeze the measured value with
<AR>
.
The [HOLD] status indicator is displayed.
The HOLD function is active.
