SKU: SENS-0841
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Winsen ZE03-H2S Gas Sensor Module - 0 to 20 ppm, UART/Analog Output

₹5,109.00 (Inclusive of all taxes)
Out of Stock

The Winsen ZE03-H2S is a dedicated electrochemical gas sensor module for detecting hydrogen sulfide (H2S) concentrations from 0 to 20 ppm with 0.01 ppm resolution. It operates on a wide 3.7V to 9V DC supply and provides both UART (3V logic) and analog voltage outputs for easy integration with microcontrollers like Arduino, ESP32, Raspberry Pi, and industrial PLCs.

Features

  • Electrochemical H2S sensor with 0-20 ppm range and 0.01 ppm resolution
  • Dual output: UART (3V logic) and analog voltage for flexible interfacing
  • Wide operating voltage range: 3.7V to 9V DC with low current draw (<5 mA)
  • Compact form factor (ø23.5 x 24.5 mm) for space-constrained installations
  • Stable performance across 0-50°C and 20-90% RH operating conditions

Out of stock

Description

The ZE03-H2S module integrates a high-performance electrochemical sensing cell specifically tuned for hydrogen sulfide detection. This sensing principle provides high selectivity and sensitivity to H2S gas, minimizing cross-sensitivity to other common gases. The onboard signal conditioning circuitry ensures a stable, linear output proportional to gas concentration.

Designed for reliable long-term monitoring, the module is suitable for deployment in industrial safety, environmental air quality assessment, and laboratory analysis systems. Its robust construction and specified operating parameters ensure consistent readings within the defined temperature and humidity ranges, supporting critical safety and compliance applications.

Key Features

  • Electrochemical H2S sensing cell for precise and selective gas detection
  • High-resolution measurement with 0.01 ppm granularity for accurate monitoring
  • Dual-output interface: digital UART (3V TTL) and analog voltage for maximum compatibility
  • Low-power design with <5 mA operating current for energy-efficient, continuous use
  • Wide 3.7V to 9V DC input range supports battery-powered or regulated supply operation
  • Compact and durable module housing designed for easy PCB mounting or enclosure integration
  • Specified for reliable operation across a broad 0-50°C temperature and 20-90% RH humidity range
  • Typical sensor life cycle exceeding one year under normal operating conditions

Applications

  • Industrial safety monitoring for H2S leaks in oil & gas, wastewater treatment, and chemical processing plants
  • Environmental air quality monitoring stations and portable gas detectors
  • Laboratory analysis and research equipment for precise H2S concentration measurement
  • Ventilation control and indoor air quality (IAQ) systems in confined spaces
  • Integration into custom IoT sensor nodes for remote environmental monitoring

Technical Specifications

Model NumberZE03
Target GasHydrogen Sulfide (H2S)
Measurement Range0 to 20 ppm
Resolution0.01 ppm
Operating VoltageDC 3.7V to 9V
Operating Current< 5 mA
Output InterfacesUART (3V TTL logic level), Analog Voltage
Operating Temperature0°C to 50°C
Operating Humidity20% RH to 90% RH
Storage Temperature0°C to 55°C
Storage Humidity20% RH to 90% RH
Dimensions (Diameter x Height)ø23.5 mm x 24.5 mm
Typical Sensor Life> 1 year

Frequently Asked Questions

What is the output interface of the Winsen ZE03-H2S module?

The module provides two output options: a digital UART interface operating at 3V TTL logic levels for direct serial communication with microcontrollers, and an analog voltage output that varies linearly with the detected H2S concentration. This dual-output design offers flexibility for integration into both digital data acquisition systems and simple analog monitoring circuits.

What is the recommended power supply voltage for this sensor?

The module is designed to operate from a wide DC voltage range of 3.7V to 9V. This makes it compatible with common regulated power supplies, battery packs (like a single Li-ion cell), or USB-powered 5V sources. Its low operating current (<5 mA) supports energy-efficient, continuous monitoring in portable or remote applications.

How do I calibrate or interpret the readings from this sensor?

The sensor is typically factory calibrated. For the analog output, the voltage signal corresponds linearly to the 0-20 ppm range (e.g., 0 ppm = minimum voltage, 20 ppm = maximum voltage). For the UART output, you must read the serial data stream using the manufacturer's specified communication protocol to obtain the concentration value in ppm. Periodic calibration against a known standard gas concentration is recommended for critical applications.

What is the expected operational lifespan of the sensor?

The electrochemical sensing element has a typical life cycle of more than one year under normal operating conditions within its specified temperature and humidity ranges. Lifespan can be affected by exposure to high gas concentrations, extreme environmental conditions, or contaminants. It is considered a consumable component for long-term monitoring systems.

Package Includes

  • 1 x Winsen ZE03-H2S Gas Sensor Module

Additional Information

Weight 0.012 kg
Dimensions 2.35 × 2.35 × 2.45 cm