KWL802 Split-Type Radar Level Sensor

1.Introduction

1.1 Product Overview

KWL802 radar level sensor conforms to the standard specifications outlined in national standard DB50/T 826-2017 for level meters. Its core component is designed with a fully sealed IP68 waterproofing.
The maximum measurement range of the product extends up to 40 meters, with a minimal blind spot of less than 6 cms.
Due to its higher frequency and broader bandwidth, it achieves superior accuracy. Additionally, the product includes a fixed bracket for installation.

1.2 Detection principle

Radar level sensor is based on the principle of time domain reflection (TDR). The electromagnetic pulse propagates along the cable or probe with the speed of light. When it meets the surface of the measured medium, part of the pulse of the radar level meter is reflected to form an echo return to the pulse transmitter along the same path, and the distance between the transmitter and the surface of the measured medium is In direct proportion as the propagation time of the pulse, hence the height of the   level is calculated.

2.Feature   

  • Based on the self-developed CMOS millimeter-wave RF chip
  • More compact RF architecture
  • Higher signal-to-noise ratio
  • Smaller dead zone
  • 5GHz working bandwidth
  • Higher measurement resolution and measurement accuracy
  • Less influence by the interference in the installation environment
  • More convenient of installation and
  • Modern design of integrated flat antenna

3.Wiring Instructions

3.1 [RS485 version] Wiring instructions

Red line VCC (9~24V power supply)
Black line GND
Yellow line 485-A
Green line 485-B

3.2 [RS232 version] Wiring instructions

Red line 12 (6~28V power supply)
Black line GND
Yellow line TX
Green line RX

3.3 [TTL version] Wiring instructions

Red line VCC
Black line GND
Yellow line TX
Green line RX
ModelKWL802-RS485
KWL802-RJ45
KWL802-RS232
KWL802-TTL
Frequency of measurement80GHz
CommunicationRS485
Frequency of acquisition≥200ms/ configurable
Current of operation12V/14mA
Distance measurement accuracy±2mm
Communication protocolModbus/ Text protocol
Antenna beam width±2.75°
Supply voltage9~24V
Range of measurement0.2~40m
0.18~30m
0.1~15/20m
0.06~3/5/10m
RF pulse current100mA/20ms
Working humidity0~95%
Type of threadG thread/ customized
Working temperature-40~75℃
Grade of water resistanceIP68
Net weight0.6kgs
KWL802 Radar Level Sensor Module Introduction & Wiring Guide

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