8.1 Measuring interface
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890 Titrando
8 Technical specifications
8.1
Measuring interface
The 890 Titrando has one measuring input for polarizable electrodes.
The measuring cycle is 100 ms for all measuring modes.
8.1.1
Polarizer
One measuring input (
Pol.
) for polarizable electrodes.
Measuring mode
Ipol
Determination with adjustable polarization current
Polarization cur-
rent
–122.5 - +122.5 µA (increment: 0.5 µA)
–125.0 - +125.0 µA: non-guaranteed values, dependent on reference
v2.5 V
Measuring
range
–1200 - +1200 mV
Resolution
0.1 mV
Measuring
accuracy
±0.2 mV
(±1 digit, without sensor error, under reference conditions)
Measuring mode
Upol
Determination with adjustable polarization voltage
Polarization
voltage
–1,225 - +1,225 mV (increment: 25 mV)
–1,250 - +1,250 mV: non-guaranteed values, dependent on reference
v2.5 V
Measuring
range
–120 - +120 µA
Resolution
0.1 µA