1. Product Overview
The Induskey SGA-100 is a standardized, modular gas detection module independently developed for 24-hour online monitoring of combustible, toxic, and volatile gases present in air. An imported original gas sensor is combined with a 32-bit microprocessor and a 24-bit data acquisition chip, followed by full-range temperature & humidity compensation and calibration with 99.999% purity standard gas — delivering a measurement front end that directly outputs a 4-20mA analog current signal or an RS485 digital signal.
The module solves the signal-acquisition problem for equipment manufacturers: after purchase, the customer directly acquires standard signals for data transmission and online monitoring, without building a sensor front end or performing calibration. Detection covers more than 1,000 combustible and toxic gases, with measuring units selectable among %LEL, %VOL, PPM, PPB, and µg/m³.
Deployed inside the customer's own instruments or at the monitoring point, the SGA-100A/B version offers a large LCD for real-time concentration display and three indicator LEDs — work, alarm, and fault — for at-a-glance status supervision on its intrinsically safe circuit. One to two passive relay contact signals are optionally available for interlocking with fans or solenoid valve control.
2. System Architecture
The SGA-100 operates as a fully integrated 24-hour online gas detection module with the following core components:
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Imported Original Gas Sensor: Delivers sensitive response, accurate measurement, fast reaction speed, low error rates, and strong anti-interference capability.
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32-Bit Microprocessor + 24-Bit Data Acquisition Chip: Detects freely across 00.000–99999 values with high precision.
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Signal Output Unit: Direct output of 4-20mA analog current signal or RS485 digital signal for immediate standard-signal acquisition.
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Compensation & Calibration Engine: Full-range temperature & humidity compensation and data correction; calibrated with 99.999% purity standard gas before delivery.
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Status Indication Module (A/B Version): Large LCD for real-time gas concentration display; three LEDs (work, alarm, fault) for at-a-glance status supervision.
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Optional Relay Output: 1–2 groups passive contact signals for direct interlocking with fans, solenoid valves, and other control equipment.
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Intrinsically Safe Circuit: Ensures safe, reliable operation when embedded into customer instruments or deployed at monitoring points.
3. Key Features & Competitive Advantages
A. Designed for 24-Hour Online Monitoring
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A standardized module built for continuous monitoring of combustible, toxic, and volatile gases.
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The large LCD shows the real-time gas concentration around the clock.
B. Premium Imported Sensor Core
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Imported original gas sensors deliver sensitive response, accurate measurement, fast reaction speed, low error rates, and strong anti-interference capability.
C. High-End Processing Chain
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32-bit microprocessor with a 24-bit data acquisition chip detects freely across 00.000–99999 values.
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Full-range temperature & humidity compensation and data correction greatly improve accuracy and stability.
D. Traceable High-Purity Calibration
E. Standard 4-20mA / RS485 Output
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Direct output of a 4-20mA analog current signal or RS485 digital signal for immediate standard-signal acquisition.
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Multiple units selectable: %LEL, %VOL, PPM, PPB, µg/m³.
F. Clear Three-LED Status Indication
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Work, alarm, and fault indicator LEDs make the monitoring status visible at a glance.
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Intrinsically safe circuit design ensures safe, reliable operation.
G. Optional Relay Linkage Outputs
4. Technical Specifications
5. Applications
The Induskey SGA-100 is engineered for versatile integration across gas detection and online monitoring scenarios:
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24h Online Gas Monitoring: Continuous fixed-point monitoring of combustible and toxic gases in industrial environments.
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OEM Instrument Integration: Ready-made gas detection core for equipment manufacturers building custom analyzers and alarm systems.
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Data Acquisition Front Ends: Standardized 4-20mA / RS485 output for direct connection to PLCs, DCS systems, and data loggers.
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Fan & Solenoid Valve Interlock: Optional relay outputs enable automated ventilation and emergency shutdown control.
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Gas Alarm Systems: Core detection module for standalone and networked gas alarm controllers.
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Environmental Monitoring Devices: Embedded module for ambient air quality and emission monitoring instruments.
6. Optional Cloud Platform
To maximize operational flexibility, the SGA-100 seamlessly integrates with the optional Induskey industrial IoT Cloud Platform via RS485 or wireless data uplink through a host gateway.
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Real-Time Remote Dashboard: Standard RS485 digital output enables connection to IoT gateways for real-time viewing of gas concentration data, equipment status, and alarm events on PC and mobile APP.
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Multi-Node Network Integration: RS485 Modbus protocol supports multi-drop networking of multiple SGA-100 modules, facilitating centralized gas monitoring across distributed industrial sites and monitoring points.
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Alarm Notification: Supports programmable threshold alarms with automatic dispatch of notifications via SMS and email when gas concentrations exceed safe limits, enabling rapid emergency response.
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Data Export & Reporting: Generates continuous historical concentration curves, alarm logs, and operational records for safety audits, regulatory compliance reporting, and maintenance planning.
