User's Manual
Table Of Contents
- 8 Parameter reference
- 9 Service and maintenance
- 10 Diagnosing and troubleshooting
- 11 Technical data
- 12 Dimension drawings
- 12.1 Threaded horn antenna
- 12.2 Threaded horn antenna with extension
- 12.3 Flanged horn antenna
- 12.4 Flanged horn antenna with extension
- 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only)
- 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger)
- 12.7 Threaded PVDF antenna
- 12.8 Threaded connection markings
- 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna
- 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna
- 12.11 Flat-Face flange
- 12.12 Process connection tag (pressure rated versions)
- A Appendix A: Technical reference
- B Appendix B: HART communications
- C Appendix C: Certificates and support
- 13 List of abbreviations
- 14 LCD menu structure
- Glossary
- Index
Dimension drawings
12.1 Threaded horn antenna
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
193
Threaded horn dimensions
Antenna
Type
Antenna
O.D.
in mm
(inch)
Height to sensor reference point, in mm (inch)
a)
Beam Angle
(°)
b)
Measurement
range, in m (ft)
1-1/2" threaded
connection
2" threaded
connection
3" threaded
connection
1.5"
39.8 (1.57)
135 (5.3)
N/A
N/A
19
10 (32.8)
2"
47.8 (1.88)
N/A
166 (6.55)
180 (7.09)
15
20 (65.6)
3"
74.8 (2.94)
N/A
199 (7.85)
213 (8.39)
10
20 (65.6)
4"
94.8 (3.73)
N/A
254 (10)
268 (10.55)
8
20 (65.6)
a)
Height from bottom of horn to sensor reference point as shown: see dimension drawing.
b)
-3dB in the direction of the polarization axis. For an illustration, see Polarization reference point
(Page 20).