Operating Instructions

Table Of Contents
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
Maximum 30 V DC
4 to 20 mA
Max. startup current see Startup Behaviour (Page 162).
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)
Measurement Accuracy (measured in accordance with IEC 60770-1)
Maximum measured
error (including hyste‐
resis and non-repeata‐
bility)
25 mm (1.0") from min. detectable distance to 500 mm
(19.7")
6 mm (0.23") remainder of range or 0.05% of span (which‐
ever is greater)
Frequency K-band (25 GHz nominal)
Max. measurement
range
1)
Solids 2" horn: 10 m (32.8 ft)
3" horn: 20 m (65.6 ft)
4" horn: 30 m (98.4 ft)
Liquids 2" horn: 20 m (65.6 ft)
3" horn: 30 m (98.4 ft)
4" horn: 30 m (98.4 ft)
SITRANS LR260 with mA/HART
Operating Instructions, 11/2019, A5E32337683-AD 125