wtw LF 170 - Page 58

Technical data LF 170
124
ba54104d09 11/2010
Current outputs
Digital interfaces 1x RS 485 (RS option)
EMC product and
system characteristics
Instrument safety
Output Galvanically separated from the sensors
Current range Adjustable:
– 0 - 20 mA
–4-20mA
Accuracy 0.1 % of current value ± 50 µA,
load max. 600 Ω
Functions – 1 x analog output for measured
conductivity value
– 1 x analog output for measured
temperature value (RT and RT RS option)
Attenuation adjustable
EN 61326 EMC requirements for electrical resources
for control technology and laboratory use
– Interference immunity according to
EN 61326/A1 Table A.1
– Resources for industrial areas, intended
for indispensable operation
– Interference emission limits for
resources of class B
System lightning
protection
Extended protective characteristics as
opposed to EN 61326/A1 Table A.1
FCC, class A
Applicable norms – EN 61010-1