21
Maximum measured error
9)
Temperature compensation
Temperature adjustment
pH/ORP/oxygen
(digital sensors)
Measured value resolution
9) acc. to DIN IEC 746 part 1, under nominal operating conditions
Conductivity, conductive measured
Two-electrode sensors 0.5 % from measured value ±0.01 μS
.
k
Four-electrode sensors 0.5 % from measured value ±0.01 μS
.
k
1))
1.0 % from measured value ±0.01 μS
.
k
2))
2.0 % from measured value ±0.01 μS
.
k
3))
1) from 0.1 μS
.
k to 20 mS
.
k (max. cable length 15 m (50 ft))
2) from 10 μS
.
k to 1000 mS
.
k (max. cable length 100 m (330 ft))
3) from 10 μS
.
k to 1500 mS
.
k (max. cable length 100 m (330 ft))
Conductivity, inductive measured 0.5 % from measured value ±1.7 μS
.
k
Resistivity, conductive measured
(two-electrode sensors)
0.5 % from measured value ±0.01 μS
.
k
4))
4) from 10 MΩ/k to 50 Ω/k (max. cable length 15 m (50 ft))
from 200 kΩ/kto50Ω/k (max. cable length 50 m (160 ft))
Type of compensation
none
linear
NaCl acc. to IEC 746-3
natural waters acc. to IEC 7888
Ultra-pure water NaCl
Ultra-pure water HCl (for NH
3
as well)
4 user tables
1))
1) with software package "Advanced" or "Advanced Plus"
Range
α = 0.00 to 20.00 % / K
0 to 100 °C (32 to 212 °F)
0 to 35 °C (32 to 95 °F)
0 to 100 °C (32 to 212 °F)
0 to 100 °C (32 to 212 °F)
Temperature offset
Temperature slope
–5 to +5 °C (23 to 41 °F)
0.9 to 1.1
1))
1) with software package "Advanced" or "Advanced Plus"
pH 0.01 pH
ORP 1 mV
Leakage current ISFET sensors 100 nA
Oxygen 0.01 resp. 0.001 mg/l (append. on sensor)
Temperature 0.1 °C (0.1 °F)