Metrohm 851 Titrando - Manual (Page 60)

8.1 Measuring interface
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851 Titrando
8 Technical specifications
8.1 Measuring interface
The 851 Titrando has one galvanically isolated measuring interface.
The measuring cycle is 100 ms for all measuring modes.
8.1.1 Generator electrode
One measuring input (Gen.) for a generator electrode.
I
max
400 mA
Continuous current and pulsed
8.1.2 Indicator electrode
One measuring input (Ind.) for an indicator electrode.
Measuring mode
Ipol Determination with adjustable polarization current
AC 5, 10, 20 and 30 µA
DC –125 - +125 µA
8.1.3 Temperature
A measuring input (Temp.) for temperature sensors of the Pt1000 or NTC
type with automatic temperature compensation.
R (25 °C) and B value can be configured for NTC sensors.
Measuring range
Pt1000 –150 - +250 °C
NTC –5 - +250 °C
(R (25 °C) = 30,000
Ω and B (25/50) = 4,100 K)
Resolution
Pt1000 0.1 °C
NTC 0.1 °C
Measuring accu-
racy
Pt1000 ±0.2 °C
(Applies for measuring range –20 - +150 °C; ±1 digit; without sensor
error, under reference conditions)
NTC ±0.6 °C