ProLab 2000
Operation
49
ba75577e03
11/2009
Note
For
single-point calibration
, the meter uses the Nernst slope
(-59.16 mV/pH at 25 °C) and determines the zero point of the
electrode.
Continuing with two-
point calibration
(
Buffer
:
NIST/DIN
)
6
Wait for the end of the measurement with Stability control or
accept the calibration value with
<MENU/OK>
.
The calibration display for the next buffer appears.
7
For single-point calibration, select
Exit with one point
calibration
with
<
▲
><
▼
> and confirm with
<MENU/OK>
.
The calibration is completed as a single-point calibration.
The new calibration values are displayed as a message (
i
).
You have the following options:
z
Accept the new calibration values with
<MENU/OK>
.
Subsequently, the calibration record is displayed and
downloaded to the interface at the same time.
z
To switch to the measured value display without accepting
the new calibration values, press
<MODE>
or
<ESC>
.
i
Buffer series
NIST/DIN
i
Immerse sensor in buffer 2
Exit with one point calibration
Continue
pH <CAL>
8
Thoroughly rinse the electrode with distilled water.
9
Immerse the electrode in buffer solution 2.
10
If the
Set temperature
menu item appears, measure and enter
the temperature of the buffer manually (measurement without
temperature sensor).
11
Select
Continue
with
<
▲
><
▼
> and press
<MENU/OK>
. The
buffer is measured.
The measured value is checked for stability (Stability control).
Содержание ProLab 2000
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