Gravity: PAV3015 Air Velocity Sensor (0-15 m/s, I2C) - แท้จาก DFRobot

Introduction

The Gravity: PAV3015 Air Velocity Sensor is a compact, high-performance anemometer for precise airflow measurement. It integrates the Posifa PAV3015D sensor, which operates on the thermopile principle by measuring temperature differences to calculate air velocity. This solid-state method provides significant advantages over traditional cup anemometers. The PAV3015 anemometer delivers a wide measurement range of 0 to 15 m/s with ±5% F.S accuracy and an exceptionally fast 125 ms response time. Coupled with a low 10 mA power consumption and a 3.3V–5V Gravity I2C interface, this air velocity sensor is ideal for embedded systems in applications like server cooling, HVAC monitoring, and UAV airspeed detection.

Compact Form Factor for Integrated Systems

The PAV3015's thermal-based design eliminates the bulk associated with traditional cup-and-vane anemometers. Its minimal footprint is a critical advantage, enabling seamless integration into compact devices, embedded systems, and portable equipment where space is a primary constraint. This allows airflow measurement in applications previously limited by sensor size.

Figure: Dimension of Gravity: PAV3015 Air Velocity Sensor

High-Accuracy Measurement with Rapid Response

The PAV3015 delivers reliable and precise air velocity readings across its full 0–15 m/s range. With an accuracy of ±5% F.S, this wind speed sensor provides trustworthy data for critical monitoring. Furthermore, its 125 ms typical response time ensures immediate detection of airflow changes, making it highly effective for real-time feedback loops, alarms, or dynamic control systems.

Simplified Integration with Gravity I2C

Equipped with the standard DFRobot Gravity I2C interface, this I2C anemometer ensures a simple, plug-and-play connection. It supports 3.3V to 5V power supply, guaranteeing compatibility with Arduino, ESP32, Raspberry Pi, and mainstream microcontrollers. This standardized interface accelerates prototyping and simplifies integration.

Optimized for Low-Power Applications

Engineered for energy efficiency, the anemometer operates on a minimal 10 mA of current. This makes it ideal for battery-powered systems, remote monitoring stations, portable instruments, and applications where energy conservation is critical.

Applications

• • Data Center and Electronics Cooling — airflow monitoring for server racks and cabinets
  • Smart HVAC Systems — airflow measurement inside ducts for energy-efficient building control
  • UAV and Drones — lightweight airspeed meter for stable flight control
  • Portable Measurement Devices — battery-operated environmental or sports instruments

Specification

• • Supply Voltage: 3.3–5V
  • Operating Temperature: -25 to +85 ℃
  • Operating Humidity: 0–100% R.H. (non-condensing)
  • Operating Current: 10 mA
  • Response Time: 125 ms
  • Measurement Range: 0–15 m/s
  • Accuracy: ±5% F.S

Documents

• • Product wiki
  • Schematic
  • Layout
  • Dimension
  • PAV30xx datasheet
  • I2C protocol

Shipping List

• • Gravity: PAV3015 Air Velocity Sensor ×1
  • Gravity 4-pin sensor cable ×1

Pinout

Tutorial

Prepare

Hardware

• Arduino UNO x 1
• IO Expansion Shield ×1
• Gravity: PAV3015 Air Velocity Sensor ×1
• Gravity 4Pin I2C cable (Comes with Gravity: PAV3015 Air Velocity Sensor)

Software

• Download Arduino IDE： Click to download Arduino IDE
• Download DFRobot_PAV3000 library：DFRobot PAV3000 Github
• Arduino IDE V2.0.0 (or above) can search

Wire Diagram

Sample Code

• After upload the following sample code, open the serial monitor to view the airflow velocity.

/*!
* @file PAV3000_1015.ino
* @brief This is the example code for the PAV3000_1015 air velocity sensor.
* @copyright Copyright (c) 2024 DFRobot Co.Ltd (http://www.dfrobot.com)
* @license The MIT License (MIT)
* @author [tangjie](jie.tang@dfrobot.com)
* @version V1.0
* @date 2024-12-2
* @url https://github.com/DFRobot/DFRobot_PAV3000
*/

#include "DFRobot_PAV3000.h"

DFRobot_PAV3000 fs;

void setup()
{
Serial.begin(115200);

while(!fs.setRange(AIRFLOW_RANGE_15_MPS)){
Serial.println("Device init error");
delay(100);
}
Serial.println("Device init success");

}


void loop()
{
Serial.print("PAV3000 Readings \tRaw: ");
Serial.print(fs.readRaw());

Serial.print("\tm/s: ");
Serial.print(fs.readMeterPerSec());

Serial.print("\tmph: ");
Serial.println(fs.readMilePerHour());


delay(1000);

}

Result