wtw pH 340/ION Instruction Manuals page 85

pH measurement
(Pay attention to the technical data of the electrode additionally)
Measuring range
Resolution
Accuracy
General points
Usable electrodes
Calibration procedure
Calibration interval
Slope range
Offset voltage (Asymmetry)
Redox-Messung
Measuring ranges
Measuring range 1
Resolution
Accuracy
Measuring range 2
Resolution
Accuracy
Usable electrodes
Technical data
-2.00 ... 16.00
0.01
0.01 ± 1 digit
Input resistance: > 5 · 10
Input currence:
pH electrodes with plug according to DIN 19262
and electrode zero point pH = 7.0 ± 0.5
two- or three-point-calibration:
AutoCal TEC
AutoCal
one- or two-point-calibration:
ConCal
1 ... 999 days (preset 7 days)
-62 ... -50 mV/pH
-30 ... +30 mV
-199,9 mV ... + 199,9 mV
0,1 mV
0,2 mV ± 1 digit at operating temperature
15 °C ... 35 °C
-1250 mV ... + 1250 mV
1 mV
1 mV ± 1 digit
Pt-Electrodes with plug according to DIN 19262
S+
12
Ohm
5 · 10
-13 A typically
< 2 · 10
-12
A at 25°C
WTW Technical Buffer Solutions
Buffer Solutions according to
DIN 19 266
1 or 2 point calibration with
suitable buffer solutions
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