{"product_id":"gravity-hcl-sensor-calibrated-i2c-uart-0-10ppm","title":"Gravity: HCL Sensor (Calibrated, I2C \u0026 UART, 0-10ppm)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eGravity: HCL Sensor (Calibrated) – I2C \u0026amp; UART provides reliable hydrogen chloride concentration detection for industrial safety monitoring, underground gas inspection, and environmental protection systems. This electrochemical hydrogen chloride sensing module arrives factory‑calibrated, enabling rapid deployment without complicated calibration procedures. Multiple communication interfaces—including analog voltage, I2C, and UART—allow flexible integration into embedded monitoring systems and IoT data collection platforms. Designed for compatibility with popular development platforms such as Arduino, ESP32, and Raspberry Pi, this gravity‑series gas detection board simplifies the creation of hydrogen chloride monitoring equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eElectrochemical Hydrogen Chloride Detection with Factory Calibration\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn electrochemical sensing probe enables accurate measurement of hydrogen chloride concentration within a 0–10 ppm range. Factory calibration ensures consistent readings immediately after installation, eliminating complicated field calibration steps commonly required in gas detection systems. High sensitivity allows reliable detection of low‑concentration hydrogen chloride leakage, while strong anti‑interference capability maintains measurement stability even in complex industrial environments. Long operational lifespan—exceeding two years in air—supports continuous monitoring applications where dependable long‑term sensing performance is essential.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFlexible Multi‑Interface Output for Embedded Systems\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThree output options—analog voltage, I2C digital communication, and UART serial output—enable seamless integration with various controllers and monitoring platforms. This multi‑interface gas sensing board supports system designers building industrial safety equipment, environmental monitoring stations, or smart infrastructure devices. Up to 32 modifiable I2C addresses allow multiple gas sensors to share a single bus, making the module suitable for multi‑gas detection arrays and scalable environmental sensing networks deployed in laboratories, factories, and underground facilities.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eIntegrated Algorithms and Easy Gravity Interface\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn onboard temperature compensation algorithm improves measurement accuracy under changing environmental conditions. Threshold alarm functionality enables automatic triggering of safety responses when hydrogen chloride concentration exceeds defined limits. The Gravity interface simplifies wiring and reduces development complexity, while sample code and standardized data formats streamline integration into embedded control systems. A consistent interface shared across the broader calibrated gas sensor lineup allows straightforward expansion to multi‑gas detection systems using compatible sensors such as CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, and HF.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eApplication Summary\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis calibrated hydrogen chloride sensing board enables rapid development of gas monitoring devices for factories, underground facilities, and environmental protection systems. Strong stability, long sensor lifespan, and flexible communication interfaces support deployment in industrial safety alarms, air quality monitoring stations, laboratory gas detection equipment, and smart environmental monitoring networks requiring accurate hydrogen chloride measurement.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStrong anti-interference ability\u003c\/li\u003e\n\u003cli\u003eHigh stability\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial hydrogen chloride detection\u003c\/li\u003e\n\u003cli\u003eUnderground hydrogen chloride detection\u003c\/li\u003e\n\u003cli\u003eEnvironmental protection device\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDetection Gas: Hydrogen chloride (HCL)\u003c\/li\u003e\n\u003cli\u003eDetection range: 0~10ppm\u003c\/li\u003e\n\u003cli\u003eWorking Voltage: 3.3～5.5V DC\u003c\/li\u003e\n\u003cli\u003eWorking Current: ＜5mA\u003c\/li\u003e\n\u003cli\u003eOutput Signal: I2C, UART (0~3V), analog voltage\u003c\/li\u003e\n\u003cli\u003eWorking Temperature: -20～50℃\u003c\/li\u003e\n\u003cli\u003eWorking Humidity: 15～90%RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: -20～50℃\u003c\/li\u003e\n\u003cli\u003eStorage Humidity: 15～90%RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003eLifespan: \u0026gt;2 years (in the air)\u003c\/li\u003e\n\u003cli\u003eAdapter Plate Size: 37*32mm\u003c\/li\u003e\n\u003cli\u003eCompatibility: Arduino, ESP32, Raspberry Pi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0474\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":67691428577357,"sku":"E34002-008","price":329.32,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E34002-win1.jpg?v=1762844224","url":"https:\/\/www.mlab.com.au\/products\/gravity-hcl-sensor-calibrated-i2c-uart-0-10ppm","provider":"MLAB","version":"1.0","type":"link"}