Installation Instructions
Table Of Contents
- Table of contents
- Important document information
- Terms and abbreviations
- Registered trademarks
- Product life cycle
- Measuring principle
- Input
- Output
- Protocol-specific data, Modbus
- Electrical connection
- Performance characteristics
- Installation
- Environment
- Process
- Mechanical construction
- Operability
- Certificates and approvals
- Ordering information
- Accessories
- Documentation
Micropilot FMR20 Modbus RS485
16 Endress+Hauser
The maximum length of the nozzle L depends on the nozzle diameter D.
Please note the limits for the diameter and length of the nozzle.
80 mm (3 in) antenna, installation inside nozzle
• D: min. 120 mm (4.72 in)
• L: max. 205 mm (8.07 in) + D × 4.5
80 mm (3 in) antenna, installation outside nozzle
• D: min. 80 mm (3 in)
• L: max. D × 4.5
40 mm (1.5 in) antenna, installation outside nozzle
• D: min. 40 mm (1.5 in)
• L: max. D × 1.5
40 mm (1.5 in) antenna, installation inside nozzle
• D: min. 80 mm (3 in)
• L: max. 140 mm (5.5 in) + D × 1.5
Device alignment for installation on a vessel
• Align the antenna vertically to the product surface.
• Align the eyelet with lug towards the vessel wall as well as possible.
90°
90°
90°
90°
90°
A0028927
13 Device alignment for installation on a vessel
Beam angle
_
2
α
W = 2 × D × tan
α
D
W
A0033201
14 Relationship between beam angle α, distance D and beamwidth diameter W