Installation Instructions

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Siemens FI 01 · Update 11/2019
Level Measurement
Continuous level measurement
Radar level transmitters
SITRANS LR250 with PVDF antenna or Polypropylene lens antenna
4
SITRANS LR250 PVDF antenna and Polypropylene lens antenna,
mounting on a nozzle, dimensions in mm (inch)
■ Technical specifications
Threaded PVDF Antenna
10.0 (0.4) min.
clearance
Polypropylene lens antenna
500 (20) max.
500 (20) max.
500 (20) max.
Min.
50.8
Ø
(2.0)
Mounting on a nozzle
A
A
B
B
80 (3)
100 (4)
150 (6)
Mode of operation
Measuring principle Radar level measurement
Frequency
K-band (25.0 GHz)
Minimum measuring range
50 mm (2 inch) from end of antenna
Maximum measuring range
• Threaded PVDF antenna
- 10m (32.8ft)
• Polypropylene lens antenna
- 20m (66ft)
Output
HART Version 5.1
• Analog output
4 ... 20 mA
• Accuracy
± 0.02 mA
• Fail-safe
• Programmable as high, low, or
hold (loss of echo)
• NE 43 programmable
PROFIBUS PA
Profile 3.1
• Function blocks
2 Analog Input (AI)
FOUNDATION Fieldbus
H1
• Functionality
Basic or LAS
• Version
ITK 5.2.0
• Function blocks
2 Analog Input (AI)
Performance (according to
reference conditions IEC60770-1)
Maximum measured error • > 500 mm from sensor reference
point: 3 mm (0.118 inch)
• < 500 mm from sensor reference
point: 25 mm (1 inch)
Influence of ambient temperature
< 0.003 %/K
Rated operating conditions
Installation conditions
• Location Indoor/outdoor
Ambient conditions (enclosure)
• Ambient temperature -40 ... +80 °C (-40 ... +176 °F)
• Installation category
I
• Pollution degree
4
Medium conditions
Dielectric constant 
r
• Threaded PVDF antenna
->3
• Polypropylene lens antenna
->1.6
Process temperature
-40 ... +80 °C (-40 ... +176 °F) at
process connection
Process pressure
Up to 5 bar g (72 psi g) temperature
dependent.
See Pressure/Temperature curves for
more information.
Design
Enclosure
• Material Aluminum, polyester powder-coated
• Cable inlet
2 x M20 x 1.5 or 2 x ½" NPT
Degree of protection
Type 4X/NEMA 4X, Type 6/
NEMA 6, IP67, IP68
Weight
• Threaded PVDF antenna
- approximately 3.5 kg (7.7 lb)
• Polypropylene lens antenna with
3 inch (80 mm) polypropylene
flange
- approximately 3.4 kg (7.5 lb)
Display (local)
Graphic local user interface
including quick start wizard and
echo profile display
Threaded PVDF antenna
• Material PVDF (Polyvinylidene fluoride)
• Process connections
2" NPT [(Taper), ASME B1.20.1]
2" [(BSPT), EN 10226]
2" [(BSPP), EN ISO 228-1]
© Siemens 2019