wtw LF 318, Instruction Manuals

Page: 33 / 44

Technical data
33
Electrodes
•
number of electrodes
•
electrode material
4
graphite
Shaft material Epoxy, black
Dimensions
•
shaft diameter
•
shaft length
•
diameter of connection head
•
total length of the sensor
•
cable length
15.3 mm
120 mm
21.7
mm
162.5 mm
1.5 m (cable is exchangeable by
WTW-Service)
Immersion depth min. 36 mm
max. total length incl. cable
(
ϑ
< 80°C)
max. 120 mm (
ϑ
< 100°C)
Pressure resistance
2 bar
Connections
•
cable, plug
•
meas. cell
protection system IP67, 8-pin plug
protection system IP68 (20 m)
Cell constant 0.475 cm
-1
±
1.5 %
Range of application 1 µS/cm ... 2 S/cm
Temperature measurement
•
thermistor type
•
thermistor material
•
temperature range
•
response time of thermistor
•
sensor accuracy
integrated NTC (30 k
Ω
/ 25°C)
graphite
-5 ... +100°C
t
99
< 20 sec.
±
0.2 K
Storage medium air