Metrohm 914 pH / Conductometer - Manual (Page 89)

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8 Technical specifications
pH Meter/Conductometer
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8 Technical specifications
8.1 Measuring inputs
The four available instruments are each equipped with specific measuring
inputs.
The following table lists the measuring inputs for each instrument and the
corresponding measuring modes.
Table 18 Measuring inputs / instrument
Device Measuring inputs / measuring modes
Electrode,
analog
Electrode,
digital
Conductivity Tempera-
ture
Reference
2.912.010 Κ/TDS/Sal/ρ/T
2.913.010 pH/U/T pH/U/T T x
2.914.010 pH/U/T Κ/TDS/Sal/ρ/T
2.914.020 pH/U/T Κ/TDS/Sal/ρ/T T x
Table 19 Specification of the measuring inputs
Measuring range Resolution Measuring accuracy 1)
pH value –13.000 - +20.000 0.001 pH ±0.003 pH
Temperature:
Pt1000
with iCon-
nect
NTC 30 kΩ
–150 °C - +250 °C
–150 °C - +250 °C
–5 °C - +250 °C
0.1 °C
0.1 °C
0.1 °C
±0.2 °C (–20 °C - +150 °C)
±0.4 °C (–20 °C - +150 °C)
±0.6 °C (+10 °C - +40 °C)
Potential –1,200.0 mV - +1,200.0 mV 0.1 mV ±0.2 mV
Conductance
2)
0.1 µS - 500 mS 4 significant
places ±0.5% at 0.1 µS - 16 µS
±0.5% at 16 µS - 1 mS
±1.0% at 1 mS - 500 mS
1) ±1 digit, without sensor error, at reference conditions
2) To obtain the conductivity, the corresponding value must be multiplied
by the cell constant. The indicated values apply for c = 1/cm.
Display interval of the measurement = 1 s