wtw pH 3110 - Measuring Ranges, Resolution, Accuracy

Technical data pH 3110
44
ba75791e02 11/2008
7.2 Measuring ranges, resolution, accuracy
Note
The accuracy values specified here apply exclusively to the meter. The
accuracy of the combination electrodes and buffer solutions has to be
taken into account additionally.
Measuring ranges,
resolution
Variable Measuring range Resolution
pH - 2.0 ... + 20.0 0.1
- 2.00 ... + 20.00 0.01
- 2.000 ... + 19.999 0.001
U [mV] - 1200.0 ... + 1200.0 0.1
- 2000 ... + 2000 1
T [°C] - 5.0 ... + 105.0 0.1
T [°F] 23.0 ... + 221.0 0.1
Manual
temperature input
Variable Range Increment
T
manual
[°C] - 25 ... + 130 1
T
manual
[°F] -13 ... + 266 1
Accuracy (± 1 digit) Variable Accuracy Temperature of the test
sample
pH / range *
- 2.0 ... + 20.0 ± 0.1 + 15 °C ... + 35 °C
- 2.00 ... + 20.00 ± 0.01 + 15 °C ... + 35 °C
- 2.000 ... + 19.999 ± 0.005 + 15 °C ... + 35 °C
U [mV] / range
- 2000 ... + 2000 ± 1 + 15 °C ... + 35 °C
-1200.0 ... +1200.0 ± 0.3 + 15 °C ... + 35 °C
T [°C] / temperature sensor
NTC 30 ± 0.1
PT 1000 ± 0.1
* when measuring in a range of ± 2 pH around a calibration point