Can the ±2.75° beam angle be reduced? Minimum distance from silo wall for installation?

Answer: The beam angle cannot be reduced beyond its current specification — narrower angles increase interference from ground reflections and wall obstructions and require high-precision customized sensors with special calibration.

Wall clearance calculation formula:

H = R / tan(beam angle)

Where H = measuring height, R = minimum wall clearance distance

tan(2.75°) ≈ 0.04

Example: For a 7 m measuring height:

R = 7 × 0.04 = 0.28 m

A minimum wall clearance of 28 cm prevents radar beams from hitting silo walls.

Related reading

• Installation, Wiring & 4-20mA / RS485 Setup Guide
• Can the radar be used directly after installation?
• Extending power supply cables
• How do I configure the values corresponding to the 4-20 mA output?
• How do I solve an error in the 4-20 mA current output?
• Can multiple RS485 radars be wired in parallel? Can the upper computer read all units simultaneously?
• No response when reading radar data via USB-to-serial adapter and upper computer software
• What is the millimeter-wave operating frequency, modulation scheme, and supported communication protocols?
• Radar measurement on plastic disc targets

• Previous：Extending power supply cables
• Next：Can multiple RS485 radars be wired in parallel? Can the upper computer read all units simultaneously?