1. Product Overview
The Induskey SGA500 is an industrial-grade, online fixed single gas detector in explosion-proof design, engineered for continuous monitoring of combustible, toxic, and volatile gases in hazardous areas. With more than 100,000 units delivered since its launch, it is the most widely deployed model of the series, combining high cost-performance with a complete certification package including the national explosion-proof certificate, CPA pattern approval, SIL, CE, and RoHS. Depending on the target gas, the detector operates on electrochemical, infrared, catalytic combustion, PID (photoionization), semiconductor, or optical waveguide sensing principles, covering more than 1,000 detectable gases. The transmitter converts the measured concentration into standard 4-20mA, RS485, or 0-5V signals for direct integration with gas alarm controllers, PLC, and DCS systems, solving the problem of round-the-clock leak surveillance without on-site personnel.
2. System Architecture
The SGA500 operates as a fully integrated fixed-point gas detection unit with the following core components:
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Multi-Principle Sensor Module: One transmitter platform supports electrochemical, infrared, catalytic combustion, PID, semiconductor, and optical waveguide sensors, covering more than 1,000 combustible, toxic, and volatile gases.
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Signal Processing & Output Unit: Converts measured concentration into standard 4-20mA (3-wire standard / 2-wire optional), 4-wire RS485, or 0-5V signals; RS485+4-20mA dual output available.
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Optional Relay Output Module: Up to two relay groups (1A / 24VDC, NO passive contacts, NC optional) for easy equipment interlock and fan/valve control.
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Optional Integrated Sound-and-Light Alarm: Simplifies mounting and wiring; alarm setpoints are user-adjustable.
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LCD Display Module (A/B Series): Chinese/English operating interface with real-time concentration display.
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Explosion-Proof Enclosure: Exd IIC T6 Gb rating with IP66 ingress protection; cast aluminum or optional SUS304 housing.
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Power Input: 12-30VDC free operation; lightning-proof triple-protection design.
3. Key Features & Competitive Advantages
A. Multi-Principle Detection Platform
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One transmitter platform supports electrochemical, infrared, catalytic combustion, PID, semiconductor, and optical waveguide sensors.
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Covers more than 1,000 combustible, toxic, and volatile gases with configurable measuring ranges.
B. Certified Explosion-Proof Safety
C. Premium Sensor Core, Long-Term Stability
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Gas sensors from first-tier international brands deliver stable, drift-free measurement.
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Full-range temperature & humidity compensation and data correction, plus automatic zero calibration in clean air, prevent false alarms.
D. Flexible Signal & Relay Outputs
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4-20mA (3-wire standard / 2-wire optional), 4-wire RS485, and 0-5V selectable.
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RS485+4-20mA dual output available; up to two relay groups for easy equipment interlock.
E. Integrated Alarm, Modular Design
F. Fast Installation & Commissioning
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Wall mounting near the leak source; M20×1.5 cable entry (G3/4 thread optional).
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Free operation anywhere within 12-30VDC reduces installation effort.
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Diffusion, pump-suction, and pipeline sampling options fit diverse applications.
G. Built for Global Industrial Service
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Chinese/English operating interface; rugged cast aluminum (optional SUS304) housing and stainless steel nameplate.
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Certified to explosion-proof, CPA, SIL, CE, and RoHS standards.
H. Wide Measuring Range & High Precision
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Measuring range: 0-1/2/5/10/50/100/500/1,000/5,000/10,000/50,000 (per sensor & principle).
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Resolution: 0.001/0.01/0.1/1/2/5 (per sensor & principle).
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Accuracy: ≤±3%; repeatability: ≤±1%; linearity error: ≤±1%.
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Response time: ≤3-20 s (varies by gas).
4. Technical Specifications
5. Applications
The Induskey SGA500 is engineered for versatile deployment across hazardous industrial environments:
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Petroleum & Petrochemical: Refineries, natural gas facilities, oil pipelines, and storage terminals.
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Chemical Plants: Process areas, reactor zones, and chemical storage leak detection.
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Smelting & Steelworks: Furnace areas, gas handling, and coke oven monitoring.
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Coal & Thermal Power Plants: Boiler rooms, coal handling, and combustion gas monitoring.
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Waterworks & Sewage Treatment: Chlorine, hydrogen sulfide, and methane detection in confined spaces.
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Pharmaceutical Workshops: Solvent vapor and toxic gas monitoring in production areas.
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Food Processing & Cold Storage: Ammonia leak detection in refrigeration systems.
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Environmental Air Monitoring: Ambient toxic gas and VOC surveillance.
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Fire Alarm Linkage: Combustible gas detection integrated with fire suppression systems.
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Research Institutes & Laboratories: Experimental gas handling and fume hood monitoring.
6. Optional Cloud Platform
To maximize operational oversight, the SGA500 seamlessly integrates with the optional Induskey industrial IoT Cloud Platform via RS485 or wireless data uplink.
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Real-Time Remote Dashboard: Operators can wirelessly upload gas concentration data to directly read detection values, monitor equipment operational status, and analyze leak trends remotely.
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Multi-Site Centralized Management: Enables GPS positioning of multiple gas detectors across plant sites, tank farms, or pipeline networks, facilitating data-driven intelligent safety management.
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Alarm Notification: Supports programmable threshold alarms (high alarm, low alarm, STEL, TWA, offline alerts) configured to automatically dispatch notifications to safety personnel and control rooms via SMS and email.
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Data Export & Reporting: Generates continuous historical concentration curves and operational logs for safety audit trails, regulatory compliance reporting, incident investigation, and maintenance planning.
