43
Specifications
Conductivity input,
analog
Multi-contact for 2-/4-electrode sensors with integrated temperature
detector
Measuring ranges
SE 202 sensor:
0.01 … 200 μS/cm
SE 204 sensor:
0.05 … 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
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 / 32 ... 86 °F)
TDS
0 … 5000 mg/l (10 … 40 °C / 50 ... 104 °F)
Temperature compensation
OFF
Linear 0 … 20 %/K, reference temperature adjustable
nLF: 0 ... 120 °C / 32 ... 248 °F
NaCl
HCl (ultrapure water with traces)
NH
3
(ultrapure water with traces)
NaOH (ultrapure water with traces)
Concentration determination See page 45
Temperature input
Multi-contact for sensors with integrated temperature detector or
2x Ø 4 mm for separate temperature detector
Measuring ranges
NTC30 temperature
detector
-20 ... 120 °C / -4 ... 248 °F
Pt1000 temperature
detector
-40 ... 250 °C / -40 ... 482 °F
Measuring cycle
Approx. 1 s
Measurement error
1,2,3)
< 0.2 K (Tamb = 23 °C / 73.4 °F); TC < 25 ppm/K
Sensor adjustment
Operating modes *
CELL CONST.
Enter cell constant
COND
Entry of calibration solution conductivity
0.1 / 0.01 MOL KCL
Automatic determination of cell constant with
KCI solution
INST. FACTOR
5)
Entry of installation factor
ZERO POINT
5)
Zero calibration
FREE CAL
Free selection of calibration method
Permissible cell constant
0.005 … 200.0 cm
-1
(adjustable)
*) User-defined
1) at rated operating conditions
2) ± 1 digit
3) Plus sensor error
4) c = cell constant
5) for inductive conductivity measurement
Summary of Contents for Portavo 904
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