Answer: In a small closed metal tank the 80 GHz wave reflects repeatedly between the liquid surface, the metal walls and the lid. The real surface echo gets buried among multipath ghost peaks — in this case a
2026-09-23
Answer: The 4‑20 mA output is mapped from the level reading, so the two things to set first are the installation height and the 4 mA / 20 mA endpoints. Step 1 — set the installation height It is the vertical
2026-09-26
Answer: A wrong 4‑20 mA reading is almost always a calibration, wiring or range-mapping issue rather than a sensor fault. Work through these in order: Recalibrate against the real receiver. Internal resistance dif
2026-09-26
supply voltage matches the device specification; abnormal voltage prevents normal operation. Check wiring: TTL communication: Cross wiring rule – RX ↔ TX. RS485 communication: Straight wiring rule – A to A, B to
2026-08-07
Operation guide: Cover the full disc surface with intact aluminum foil, no gaps or wrinkles. Add a waterproof film for long-term outdoor use to prevent aluminum foil oxidation and signal attenuation. For long-term
2026-08-07
Send AT command AT+OUTRAWDATA=2 via upper computer; confirm reply “OK”, then close the serial port. Open the Spectrum Viewer software, select the correct serial port, open the port, and click FFT Spectrum
2026-08-07
Answer: Foam thicker than 3‑4 cm triggers an “insufficient echo energy” alert. As foam thickness increases, radar signal penetration degrades, the sensor fails to capture valid target echoes, and outputs weak
2026-08-07
Answer: Set a unique communication address for each radar (factory default address: 127 / Modbus hex address 0x7F). Radars with unique addresses can be connected on the same RS485 bus, but the upper computer software can
2026-08-07
Q: Can I extend the power cable myself? Can the cable be extended to 50 m or more? A: Power cables for RS485 models may be extended on-site. Use thicker-gauge wiring to maintain operating voltage between 9‑12 V and avoid
2026-08-07
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 c
2026-08-07
Answer: Operating frequency: 80 GHz; Modulation: FMCW (Frequency Modulated Continuous Wave); Supported protocols: Modbus, Text protocol. Related reading Installation, Wiring & 4-20mA / RS485 Setup Guide Can the ±2.
2026-08-07
1. Open environments (rivers, open water tanks) Typical issues: Weak true target echoes, frequent antenna echo interference, unstable distance readings. Increase RF transmit power (secondary echoes rarely occur in open
2026-08-07
Copyright @ 2026 JiaJia Eye
Scan to add WeChat