Interface; Mechanical - Siemens SITRANS LR250 Instruction Manual

Frequency
Measurement range
Update time at 4 mA
Update time digital
Blanking distance
Influence of ambient temperature
Dielectric constant
• 1.5" and 2" horns
• 3" and 4" horns
Memory:
• non-volatile EEPROM
• no battery required.

Interface

• HART
• configuration
• analog output
• display (local)

Mechanical

Process Connections:
• threaded connection
• flange connection
• materials
Antenna:
• horn
• materials
1.
Minimum range is horn length + 50 mm. For the reference point for each configuration, see
SITRANS LR250 Dimensions
2.
Near Range (Blanking)
See
3.
Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F).
Page 8 SITRANS LR250 (HART) – INSTRUCTION MANUAL
25.0 GHz
1
0.3 to 20 m (1 to 65 ft)
1 second
≤ 1.5 seconds
2
42 mm (1.65") from end of horn
< 0.006% / K (average over full temperature range,
referenced to maximum range)
ε >3
r
ε > 2
r
standard, integral to analog output
Siemens SIMATIC PDM (PC), or
HART handheld communicator, or
Siemens Milltronics infrared hand-held programmer
4 to 20 mA
linearity under
3
dot matrix with bar graph (representing level)
1.5" or 2" NPT, BSP , or G [BS EN ISO 228-1]
2", 3", 4" (ANSI 150, 300#), 50, 80, 100 mm (PN16, 40, JIS 10K)
316 L stainless steel, optional Hastelloy C22
standard 1.5" (40mm) , 2" (48 mm), 3" (75 mm), and 4" (95
mm) horn, optional 100 mm (4") horn extension
316L stainless steel with PTFE emitter
optional Hastelloy C22 with PTFE emitter
on page 19
on page 108 for more details.
±
0.02 mA accuracy (for detail, see non-
Analog Output Accuracy
on page 7)
7ML19985JE01