1. Product Overview
The Induskey SGA-ZHB-4 is a four-channel signal conversion board equipped as standard with 1 to 4 smart gas sensor modules for different gases. The board aggregates the signals of all inserted modules and outputs them uniformly over RS485, RS232, or USB-to-TTL — fulfilling the need to detect up to four gases with a single product. More than 1,000 different combustible, toxic, and volatile gases are supported, with truly plug-and-play operation.
Through the inserted sensor modules, the board is compatible with multiple gas detection technologies and works with imported original gas sensors offering fast response, low error rates, and strong anti-interference capability. Full-range temperature & humidity compensation and data correction greatly improve accuracy and stability. Two sampling methods are available — diffusion or pump-suction — and matching monitoring software and commissioning tools are provided as companion resources.
Built on an intrinsically safe circuit design within a compact 100 × 100 mm footprint, the board is embedded into the customer's own instruments and devices, and is also compact enough to serve as a multi-parameter mobile monitoring station. It solves the integration problem of multi-gas detection in OEM equipment: standardized serial outputs, free test & debug tools, and modifiable internal data allow straightforward commissioning and secondary development.
2. System Architecture
The SGA-ZHB-4 operates as a fully integrated four-channel signal acquisition and aggregation unit with the following core components:
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Four Smart Sensor Sockets: Accepts 1-4 smart gas sensor modules for different gases; any combination with unrestricted module positions. Insert and use — no recalibration required.
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Signal Aggregation & Output Unit: Aggregates all channel signals into a unified output over RS485, RS232, or USB-to-TTL, making field testing and connection to the customer's host system straightforward.
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Sampling System: Two sampling methods selectable — natural diffusion or active pump-suction for remote and confined sampling.
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Compensation Engine: Full-range temperature & humidity compensation and data correction greatly improve accuracy and stability across all channels.
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Power Input: DC 24V (per board terminal marking).
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Intrinsically Safe Circuit Design: Ensures safe, reliable operation when embedded into customer equipment.
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Free Software & Tools: Monitoring software and test & commissioning tools provided free of charge, with internal data modifiable by the user.
3. Key Features & Competitive Advantages
A. Four-in-One Gas Detection
B. Unified Multi-Signal Output
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Aggregated signals are output over RS485, RS232, or USB-to-TTL.
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Simplifies field testing and direct connection to the customer's host system or data logger.
C. Plug-and-Play Modular Design
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Standardized, modular construction supports any combination of 1-4 gases with no restriction on module positions.
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Insert and use; no recalibration required after module insertion.
D. Diffusion or Pump-Suction Sampling
E. Intrinsically Safe Circuit Design
F. Premium Sensors with Full-Range Compensation
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Imported original gas sensors deliver fast response, low error rates, and strong anti-interference capability.
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Full-range temperature & humidity compensation and data correction greatly improve accuracy and stability.
G. Free Test & Debug Tools, Mobile-Station Ready
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Monitoring software and test & commissioning tools are provided free of charge, with internal data modifiable by the user.
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The compact 100 × 100 mm board is handy enough to serve as a multi-parameter mobile monitoring station.
4. Technical Specifications
5. Applications
The Induskey SGA-ZHB-4 is engineered for versatile integration across OEM and multi-gas system development scenarios:
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Multi-Gas OEM Equipment Integration: Ready-made four-channel acquisition front end for manufacturers adding multi-gas detection to their product lines.
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Four-Gas Detection with One Board: Single-board solution for applications requiring simultaneous monitoring of up to four different gases.
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Multi-Parameter Mobile Monitoring Stations: Compact 100×100mm form factor enables portable and vehicle-mounted multi-gas analyzers.
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Secondary Development via Open Outputs: Standardized RS485/RS232/USB-to-TTL outputs and free tools enable rapid firmware and software development.
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Serial Data Acquisition Front Ends: Unified multi-channel output for connection to PLCs, DCS systems, and data loggers.
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Modular Instrument Upgrades: Add or swap sensor modules to change target gases without redesigning hardware — ideal for flexible analytical instruments.
6. Host System & Optional Cloud Platform Integration
To maximize operational flexibility, the SGA-ZHB-4 seamlessly integrates with host systems and the optional Induskey industrial IoT Cloud Platform via standardized serial outputs.
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Real-Time Multi-Channel Data Acquisition: RS485, RS232, and USB-to-TTL outputs enable direct connection to PLCs, DCS systems, data loggers, and microcontrollers for real-time monitoring of up to four gas concentrations simultaneously.
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Multi-Node Network Integration: RS485 Modbus protocol supports multi-drop networking of multiple SGA-ZHB-4 boards, facilitating centralized multi-gas monitoring across distributed OEM equipment.
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Alarm & Control Logic: Digital serial signals enable integration with alarm controllers, relay modules, and automated ventilation or shutdown systems for multi-gas safety interlock.
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Cloud Platform Uplink: When connected to a host gateway, aggregated measurement data from all four channels can be uploaded to the Induskey IoT Cloud Platform for remote monitoring, historical trending, and alarm notification via PC and mobile APP.
