Hach-Lange 3798-S sc - Manual (Page 5)

3
Section 1 Technical data
1.1 Technical data for the 3798-S sc conductivity sensor
Specifications are subject to change without notice.
Materials Stainless steel metal housing, PEEK
Enclosure rating IP 68; stainless steel metal housing
Storage temperature
Sensor and controller
–20 °C ... 60 °C; 95 % relative humidity, non-condensing
Cell constant K = 2.35 cm –1
Measuring range conductivity 250 µS /
cm
... 2.5 S /
cm
Temp. measuring range –5 °C ... 50 °C
Sensor operating temperature –20 °C ... 50 °C
Conductivity response time < 2 s; T90
Temp. response time < 2 min; T90
Conductivity measuring accuracy ± 1 % of the measured value displayed or ± 0.004 mS /
cm
Temp. measuring accuracy ± 0.2 °C
Reproducibility < 0.2 %
Sensitivity ± 0.5 % of the end value of the measuring range
Sensor power < 7 W
Calibration
Zero value calibration in air.
Fixed value calibration with defined resistance or with standard solution
Max. immersion depth / pressure
for the sensor
20 m / 2 bar
Maximum flow speed 4 m/s
Sensor interface MODBUS
Sensor cable 10 m, hard wired, polyurethane
Sensor weight < 1 kg
Sensor dimensions (Ш Ч L) 43 × 370 mm
Fastening
• Immersed pipe
• Chain