pH value
Multi 3320
26
ba77053e04
07/2018
Continuing with two-
point calibration
5.
Thoroughly rinse the electrode with deionized water.
6.
Immerse the electrode in the first buffer solution.
7.
When measuring without temperature sensor:
– Temper the buffer solution, or measure the current temperature.
– Enter the temperature value in the menu.
8.
Start the measurement with
<ENTER>
.
The measured value is checked for stability (stability control). The [AR]
status indicator is displayed. A progress bar is displayed and the display
of the measured parameter flashes.
9.
Wait for the end of the measurement with stability control or accept the
calibration value with
<ENTER>
.
The calibration display for the next buffer appears (voltage display).
10. If necessary, finish the calibration procedure as a single-point calibration
with
<M>
.
The calibration record is displayed.
For
single-point calibration
, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the elec-
trode.
pH
1
-180.0
24.8
°C
AutoCal TEC
15.02.2014
14:15
Buffer
mV
pH
-180.0
24.8
°C
AutoCal TEC
10.011
15.02.2014
14:15
AR
Buffer
mV
11. Thoroughly rinse the electrode with deionized water.
12. Immerse the electrode in the second buffer solution.
