DFRobot

URM14-RS485 Precision Ultrasonic Sensor (200KHz)

Name: URM14-RS485 Precision Ultrasonic Sensor (200KHz)
Brand: DFRobot
SKU: DF-SEN0358
Price: 175.45 AUD
Availability: InStock

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DFRobot URM14 RS485 Precision Ultrasonic Sensor(200KHz) is a high-frequency precision ultrasonic sensor for industrial use. The sensor measurement and signal...

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DFRobot URM14 RS485 Precision Ultrasonic Sensor(200KHz) is a high-frequency precision ultrasonic sensor for industrial use. The sensor measurement and signal processing unit is completely encapsulated in an M18 metal shell and its tail is designed with an aviation connector plug. The sensor uses the RS485 interface that follows the standard Modbus-RTU communication protocol, which assures its compatibility with PLC industrial personal computer. Furthermore, the adoption of higher ultrasonic acoustic frequency and more precision signal processing circuit gives this URM14 sensor mm-grade accuracy and up to1.5m reliable measuring range. The only 12° measuring angle makes the sensor able to present the directional measurement characteristic similar to laser ranging sensors.

With the advanced auto noise detection function integrated, the URM14 sensor can detect noise in real-time and adjust its parameter based on the noise level. In addition, it comes with a flexible temperature compensation function that allows users to use the sensor built-in temperature compensation or external temperature compensation according to their needs, which makes it applicable to various complicated application scenarios.

Board Overview

SPECIFICATION

Operating Voltage: DC 7-15V
Max Instantaneous Current: 350mA
Effective Measuring Range: 100-1500mm
Distance Resolution: 0.1mm
Measuring Accuracy: 1mm
Distance Error: ±0.1%
Temperature Resolution: 0.1℃
Temperature Error: ±1℃
Measuring Frequency: 30HZ
Operating Temperature: -20℃～＋80℃
Sensor Acoustic Frequency: 200KHz±4%
Directional Angle: 12°±2°(-6dB)
Protection Grade: IP65
Communication Interface: RS485

DOCUMENTS

Product wiki

Jargon buster

Plain-language definitions for the technical terms used above.

DC: DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
ModBus-RTU: ModBus-RTU is a common industrial protocol for sending readings and control commands over serial links such as RS485. Knowing a device uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its data.
RS485: RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
Temperature compensation: Temperature compensation is when a sensor or instrument adjusts its readings to reduce errors caused by changes in temperature. This matters because a sensor's raw output often drifts as conditions warm or cool, so compensation keeps readings more consistent and accurate over time.