wtw TecnoLine LF 171 Operating Manual page 113

Technical data
POWER SUPPLY
Voltage
Nominal power consumption
Behaviour after power failure:
EMC AND VDE STANDARDS
Protection:
Protection class:
Climate class:
Instrument security:
Emissions
Immunity
Test certificates:
Lightning protection
(data inputs and
outputs)
ELECTRICAL DATA
Measuring input:
CONDUCTIVITY MEASUREMENT
Measuring rate
Measuring ranges
Accuracy
230V ~ (-15%/+10%) 50 ... 60 Hz
115V ~ (-15%/+10%) 50 ... 60 Hz
(Overvoltage category III)
Model
LF 171 (Standard)
LF 171 R
LF 171 RS
LF 171 R/RS
Measurement is immediately continued as soon as mains voltage
is supplied again.
IP 66, IEC 529, EN 60529, DIN VDE 0470
2 according to IEC 1010
Climate class 4,VDI / VDE 3540 Bl.2
IEC 1010
EN 50081-1
EN 50082-2, Namur recommendations: increased requirements
GS, CE
High-voltage fuse limited to 90 V,
Nominal leakage surge current 5 KA (8/20 µs)
Fine protection max. 600 W
galvanically isolated, suitable for connection of TetraCon
®
and TetraCon 600.
1 measurement/s
®
with TetraCon 700 and TetraCon
Measuring range 1: from 0 up to 199.9 µS/cm
Measuring range 2: from 0 up to 1999 µS/cm
Measuring range 3: from 0 up to 19.99 mS/cm
Measuring range 4: from 0 up to 199.9 mS/cm
in measuring range ³ 5 µS/cm and
± 2%
cable length of the measuring cell £ 20 m.
± 0.5% in measuring range ³ 50 µS/cm and
cable length of the measuring cell £ 100 m.
switchable
Nominal power consumption
13 VA
15 VA
15 VA
20 VA
®
600:
®
700
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