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SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
179
Technical data
11
Note
•
Siemens makes every attempt to ensure the accuracy of these specifications but reserves
the right to change them at any time.
11.1
Power
General Purpose:
Intrinsically Safe:
Non-Sparking:
Non-incendive:
Bus powered
Per IEC 61158-2 (PROFIBUS PA)
Current consumed 15 mA
11.2
Performance
Reference operating conditions according to IEC 60770-1
Ambient temperature
15 to 25 °C (59 to 77 °F)
Humidity
45 to 75% relative humidity
Ambient pressure
860 to 1060 mbar a (86000 to 106000 N/m
2
a)
Interference reflections
minimum 20 dB lower than the main target reflections