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7Semi BME688 Environmental Sensor

7Semi BME688 Environmental Sensor

₹1,351.00Price
🔹 7Semi BME688 Environmental Sensor Probe (Gas, Pressure, Temperature & Humidity) – Technical Information
 
🔹 Overview
The 7Semi BME688 Environmental Sensor Probe is a professional-grade multi-parameter environmental sensing module based on the Bosch BME688 sensor IC.
It integrates four sensing capabilities in a probe format:
  • Temperature
  • Humidity
  • Barometric pressure
  • Gas / air quality (VOC detection)
👉 Designed for remote sensing applications using a probe + cable system, unlike standard breakout boards.
🔹 Working Principle
  • Uses MEMS sensors for temperature, humidity, and pressure
  • Uses MOX (metal-oxide) gas sensing element for VOC detection
  • Internal system:
    • ADC + digital signal processing
    • AI-based gas analysis algorithms
👉 Converts raw signals → calibrated digital environmental data
🔹 Measured Parameters
🌡️ Temperature
  • Range: –40°C to +85°C
💧 Humidity
  • Range: 0% to 100% RH
🌬️ Pressure
  • Range: 300 hPa to 1100 hPa
🧪 Gas / Air Quality
  • Detects:
    • VOCs (volatile organic compounds)
    • General air pollutants
  • Outputs:
    • IAQ (Indoor Air Quality index)
    • bVOC (breath VOC equivalent)
    • eCO₂ (estimated CO₂)
👉 Gas detection operates at ppb-level sensitivity
🔹 AI-Based Gas Sensing
  • Built-in AI / machine learning capability
  • Can:
    • Identify gas patterns
    • Classify environmental conditions
👉 Enables advanced air quality analysis beyond raw sensing
🔹 Electrical Characteristics
  • Supply Voltage: ~3.3V
  • Low power consumption → suitable for embedded and IoT systems
🔹 Communication Interface
  • Protocol: I2C (digital output)
  • Cable: 1-meter pre-attached (typical)
  • Connector: MRS (Mini Round Shell type)
👉 Allows remote sensor placement away from main PCB
🔹 Physical Characteristics
Probe Design
  • Housing options:
    • Plastic (lightweight, corrosion-resistant)
    • Metal (industrial-grade, rugged)
Features
  • Breathable enclosure for accurate sensing
  • Protective casing against:
    • Dust
    • Moisture
    • Harsh environments
🔹 Performance Characteristics
  • Gas scan cycle: ~10.8 seconds
  • Fast gas response: < 1 second (initial response)
  • High stability and long-term reliability
  • Factory calibrated (NIST traceable)
🔹 Internal Architecture
  • Temperature sensor
  • Humidity sensor
  • Pressure sensor
  • MOX gas sensor
  • ADC + DSP
  • AI processing engine
🔹 Functional Behavior
  • Continuously measures environmental conditions
  • Gas sensor:
    • Uses heating cycles
    • Requires stabilization time
  • Outputs:
    • Raw sensor data
    • Processed air quality metrics
🔹 Key Technical Features
  • 4-in-1 environmental sensing
  • AI-enabled gas classification
  • Digital I2C interface
  • Remote probe design with cable
  • NIST-traceable calibration
  • Wide operating range
  • Low power operation
🔹 Advantages
  • Combines multiple sensors in one probe
  • Supports remote measurement (important for ducts, chambers, HVAC)
  • High accuracy and stability
  • Easy integration via I2C
  • Suitable for harsh and industrial environments
🔹 Limitations
  • Gas readings are:
    • Relative (require calibration/training for accuracy)
  • Requires:
    • Warm-up / burn-in time
  • Gas sensor consumes higher power during operation
  • Affected by:
    • Temperature
    • Humidity
    • Airflow conditions
🔹 Technical Summary
The BME688 probe is a smart environmental sensing system that:
  • Integrates temperature, humidity, pressure, and gas sensing
  • Uses AI-based processing for advanced air quality analysis
  • Provides remote, high-accuracy environmental monitoring
👉 Compared to breakout boards:
  • Adds probe + cable design for real-world deployment
  • Better suited for industrial, HVAC, and field applications
Quantity
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