PRODUCT
BD-RLM radar water level gauge
A radar water level gauge is a high-precision, non-contact water level measurement instrument. Its key advantages include contactless measurement, ease of installation, and the use of electromagnetic waves to determine distance. It is unaffected by environmental factors such as temperature, humidity, atmospheric pressure, rain, snow, and windblown sand, enabling direct measurement of water levels in natural river channels and facilitating remote transmission and automated processing of water level data.
keyword
radar level gauge
Classification
Product Detail
Product用途:
The radar water level gauge is a high-precision, non-contact water level measurement instrument. Its key advantages include contactless measurement, easy installation, and the use of electromagnetic waves to determine distance, unaffected by environmental factors such as temperature, humidity, atmospheric pressure, rain, snow, or windblown sand. It can directly measure water levels in natural river channels and enable remote transmission and automated processing of water level data. Furthermore, this device features rapid water level tracking, non-contact measurement, and minimal sensitivity to wind, sand, temperature, and floating debris, making it well suited for applications in rivers, reservoirs, and similar settings. It can also be used to measure open-channel flow, tank liquid levels, and the levels of liquids, slurries, and viscous materials.
Measurement principle:
The radar level gauge emits an extremely narrow, low‑energy microwave pulse from its antenna. This pulse travels through space at the speed of light and, upon encountering the measured medium, is reflected back to the instrument. By measuring the time interval between the transmitted and received pulses—proportional to the distance from the reference plane to the surface of the medium—the gauge determines the distance from the antenna to the medium’s surface.
Product Features:
(1) Compact size for easy installation; non-contact radar, with no wear and no contamination.
(2) It is virtually unaffected by corrosion or foaming, and is largely insensitive to variations in atmospheric water vapor, temperature, and pressure.
(3) Severe dust environments have little impact on operations.
(4) Shorter wavelength, resulting in better reflection from inclined solid surfaces.
(5) The beam angle is small, concentrating the energy, which enhances echo strength while also helping to avoid interference.
(6) The measurement blind zone is smaller, ensuring excellent performance even when measuring small tanks.
(7) High signal-to-noise ratio, enabling superior performance even under varying conditions.
Performance Metrics:
| Measurement range |
30 meters |
80 meters |
| Process connection |
Thread G1 half ʺ A / Bracket / Flange |
Thread G1 half ʺ A / Bracket / Flange |
| Process temperature |
-40～100℃ |
-40～100℃ |
| Process pressure |
Atmospheric pressure |
Atmospheric pressure |
| Refined degree |
±5 mm (range 10 m) ±10 mm (range 30 m) |
± 3 mm (range) 2 0m) ± 5 mm (range) 8 0m) |
| Frequency range |
26GHz |
76-81GHz |
| Protection rating |
IP67 |
IP67 |
| Power supply |
DC (6–24 V) / four-wire, DC 24 V / two-wire |
DC (6–24 V) / four-wire, DC 24 V / two-wire |
| Signal output |
RS485/Modbus protocol (6–24 V DC) 4–20 mA/HART two-wire (24 V DC) |
RS485/Modbus protocol (6–24 V DC) 4–20 mA/HART two-wire (24 V DC) |
| Displayed on-site |
Optional |
Optional |
| Outside shell |
Aluminum /plastic |
Aluminum /plastic |
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