37
Specifications
Conductivity input,
analog
Multi-contact for 2-/4-el. sensors with integrated temp detector
Measuring ranges
SE 202 sensor:
0.01 … 200 μS/cm
SE 204 sensor:
0.05 to 500 mS/cm
2-electrode sensors:
0.1 μS * c … 200 mS * c
4)
4-electrode sensors:
0.1 μS * c … 1000 mS * c
4)
Measurement error
1,2,3)
< 0.5 % meas.val. + 0.4 µS * c
4)
Measuring cycle
Approx. 1 s
Temperature compensation
Linear 0 … 20 %/K, reference temperature adjustable
Concentration measurement
See page 39
Display resolution
1)
(autoranging)
Conductivity
0.001 μS/cm (c < 0.05 cm
–1
)
0.01 μS/cm (c = 0.05 … 0.2 cm
–1
)
0.1 μS/cm (c > 0.2 cm
–1
)
Resistivity
00.00 … 99.99 MΩ cm
Salinity
0.0 ... 45.0 g/kg (0 ... 30 °C)
TDS
0 ... 1999 mg/l (10 ... 40 °C)
Temperature input
Multicontact for sensors with integrated temperature detector or
2 x 4 mm dia. for separate temperature detector
Measuring ranges
NTC30 temp detector
-20 … +120 °C
Pt1000 temp detector
-40 … +250 °C
Measuring cycle
Approx. 1 s
Measurement error
1,2,3)
< 0.2 K (Tamb = 23 °C); TC < 25 ppm/K
Sensor standardization
CELL CONST
Input of cell constant with simultaneous dis-
play of conductivity value and temperature
COND
Input of conductivity of the calibration
solution with simultaneous display of cell
constant and temperature
0.01 MOL KCL
0.1 MOL KCL
Automatic determination of the cell constant
with KCl solution (0.01 mol/l or 0.1 mol/l)
Permissible cell constant
0.005 … 200.0 cm
-1
(adjustable)
1) According to EN 60746-1, at nominal operating conditions
2) ± 1 count
3) Plus sensor error
4) c = cell constant
