Metrohm 899 Coulometer - Manual (Page 116)

11.1 Measuring inputs
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
106 ￭￭￭￭￭￭￭￭
899 Coulometer
11 Technical specifications
11.1 Measuring inputs
The measuring cycle is 100 ms for the measuring mode Ipol AC.
11.1.1 Indicator electrode
One measuring input (Ind.) for an indicator electrode.
Measuring mode
Ipol Determination with adjustable polarization current.
Voltametric endpoint indication with alternating current.
Polarization
current typical: 5, 10, 20 and 30 µA
11.1.2 Temperature
One measuring input (Temp.) for one Pt1000-model temperature sensor.
Measuring range –150…+250 °C
Resolution 0.1 °C
Measuring accu-
racy ±0.2 °C
(Applies for measuring range –20…+150 °C; ±1 digit; without sensor
error, under reference conditions.)
11.2 Generator connector
One electrode connector (Gen.) for a generator electrode.
11.2.1 Generator electrode
Iodine generation with current pulses or continuous current.
Current at the
electrode auto: variable direct current
100, 200, 400 mA: pulsating direct current
I
max
400 mA