DS4-CH4S Intelligent Digital Gas Sensor

Overview:

The DS4-CH4S methyl mercaptan (CH₄S) intelligent digital sensor is developed by AQS (Aikesen Technology), a company specializing in gas detection solutions. Its core technical team has over 20 years of expertise in gas detection technology and applications.

Technical Principle

Based on solid polymer electrochemical sensing technology, a revolutionary innovation in electrochemical detection. The sensor consists of three catalytic electrodes, a solid-state electrolyte, and gas diffusion pores. Gas reaches the working electrode through diffusion pores, where electrochemical oxidation or reduction occurs on the porous micro-surface. The solid-state electrolyte enables electron transfer, generating a current signal proportional to the gas concentration.

Product Features:

• Wide Voltage Range:Operates at 3.3V to 12V DC (recommended 5V).
• Broad Temperature Range:Works at -40°C to +55°C without temperature compensation.
• Superior Performance:Excellent linearity for real-time monitoring; long-term zero-point stability; anti-poisoning design for extended lifespan.
• Compact Design:Standard 4-series industrial size (20mm × 16.6mm cylindrical) for easy integration into new or existing products.
• Low-power Sleep Function:Customizable sleep/wake mode suitable for IoT and battery-powered applications.
• Plug-and-Play:No preheating required; operational immediately after power-on.

Technical Parameters:

• Accuracy:±5% of full scale (F.S)
• Output Type:UART digital signal
• Measurement Ranges:100PPM, 5000PPM
• Weight:4.56g
• Operating Voltage:3.3 - 5V DC (recommended 5V DC)
• Output Interface:UART 3.3V half-duplex

Certifications & Standards:

Complies with strict national and international standards, meeting requirements for certifications such as IP65/66, UL, CE, ExdⅡCT6Gb, RoHS, PA, MA, ISO9001, and national metrology inspection standards.

Application Fields

Widely used in:

• Industrial safety monitoring
• Urban environmental engineering
• Underground utility tunnels
• Rail transit
• Atmospheric environmental protection
• Academic laboratories
• Healthcare
• Indoor air quality monitoring
• Food safety and public health