Specifications; Power; Performance - Siemens Sitrans LR250 Instruction Manual

Specifications

Notes:
• Siemens Milltronics makes every attempt to ensure the accuracy of these
specifications but reserves the right to change them at any time.

Power

Bus powered
Current consumed

Performance

Reference operating conditions according to IEC 60770-1
• ambient temperature
• humidity
• ambient pressure
Measurement Accuracy (measured in accordance with IEC 60770-1)
• Maximum measured error
Frequency
Max. measurement range
Min. detectable distance
Update time
Influence of ambient temperature <0.003% / K (average over full temperature range,
Dielectric constant of material measured
• dK > 1.6, horn and application dependent
Memory
• non-volatile EEPROM
• no battery required.
1)
From sensor reference point: see
Antenna with extension
2)
Horn dimensions
See
3)
For 1.5" (40 mm) horn the dK is limited to 3 unless a stillpipe is used.
7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL
Per IEC 61158-2 (PROFIBUS PA)
15.0 mA (General Purpose or Intrinsically Safe version)
o
+15 to +25 C (+59 to +77
45% to 75% relative humidity
860 to 1060 mbar g (86,000 to 106,000 N/m
= 5 mm (0.02") (including hysteresis and non-
repeatability)
K-band
1)
20 m (65.6 ft) except for 1.5" horn which has 10 m
(32.8 ft)
50 mm (1.97") from end of horn
minimum 1 second, depending on settings for
Response Rate (2.2.6. 1 .) and LCD Fast Mode (4.2.).
referenced to maximum range)
3)
Flanged Horn
on page 12.
on page 13.
o
F)
2)
Threaded Horn
on page 9 and
2
g)
Page 5