Siemens 7ML5431 - Technical Data; Power; Performance

SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
175
Technical data
11
Note
Device specifications
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 (FM/CSA US/Canada only)
Nominal 24 V DC at 550 Ohm
Flameproof
Increased Safety
Explosion-proof (FM/CSA US/Canada only)
Nominal 24 V DC at 250 Ohm
● Maximum 30 V DC
● 4 to 20 mA
● Max. startup current see Startup Behaviour (Page 258).
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