Siemens SITRANS LR 400 Instruction Manual page 11

Communication: Profibus PA
Protocol
Device Class
Device Profile
• PC/Laptop requirements
• Software for PC/Laptop
Performance
Measured value error (under reference conditions)
• Measuring error
• Dead zone
• Additional contribution of
Analog Output
• Additional Contribution of
the Supply Voltage
• Influence of pressure
(air, 20°C)
• Long-term stability
• Repetitive accuracy
• Reference conditions
Medium
Ambient temperature
Ambient pressure
Absolute Measuring Error
7ML19985FH01
Layer 1 and 2 Profibus PA,
technology: IEC 61158-2, slave-functionality
B
3.0
IBM-compatible
RAM ≥ 64 Mbytes
Hard disk ≥ 100 Mbytes
RS 232-C interface
VGA graphic card (≥ 640 x 480)
Windows 95/98 or NT 4.0
SIMATIC PDM
≤ ± 15 mm at 0.26 to 2 m distance
≤ ± 5 mm at 2 to 10 m distance
≤ ± 15 mm at 10 to 45 m distance
(see diagram below)
0-26 cm from bottom edge of flange
≤ 0.1 % of the measured value
≤ 0.05 % of full scale
≤ 0.05 % per 10 % deviation of UN
≤ 0.3 % to 10 bar without pressure correction
≤ 2 % at 10 to 64 bar without pressure correction
≤ ± 1 mm/year
≤ ± 1 mm at 0 to 45 m, damping ≥ 1 s
Triple reflector on the main axis of the antenna main lobe
25 ± 5°C (77 ± 9°F)
1050 mbar ± 10 %
20
15
10
5
0
-5
-10
-15
-20
2 10
Distance from flange [m]
SITRANS LR 400 – INSTRUCTION MANUAL DRAFT
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