Gas Sensor Modules
GSB-01
Three-Gas Industrial Monitoring Module
Simultaneous CH₄, NH₃, and H₂S monitoring with Modbus RTU or Power Line Communications, no new wiring required. CH₄ sensor is ATEX and IECEx certified for Zone 1/2 hazardous areas.
ARG Sensor Modules
Three critical gases. One compact module.
The GSB-01 combines NDIR methane sensing with solid polymer electrochemical detection of ammonia and hydrogen sulfide on a single board. Selectable Modbus RTU or Power Line Communications means it drops into existing infrastructure with no new wiring.
Sensor Technology
Industrial-grade sensors. Production-ready board.
Each gas channel uses best-in-class Amphenol SGX sensing elements. The GSB-01 is a fully assembled, calibrated module, customize the sensor complement for other gas targets.
Methane (CH₄), NDIR
Amphenol INIR2-ME100-PC. Non-dispersive infrared, 0–100% vol. CH₄, 10 ppm resolution. ATEX and IECEx certified for use in hazardous areas.
Ammonia (NH₃), Electrochemical
Amphenol PS1-NH3-100 solid polymer electrolyte sensor. 0–100 ppm range, 20 ±10 nA/ppm sensitivity. HVAC plant rooms, agricultural, and industrial hygiene applications.
Hydrogen Sulfide (H₂S), Electrochemical
Amphenol PS1-H2S-500. 0–500 ppm (1000 ppm overload), LDL ≤2 ppm, 1 ppm resolution. T‑90 <30 sec. Sewage, utilities, and confined space monitoring.
Modbus RTU or Power Line Comms
Selectable RS-485 Modbus RTU or Power Line Communications, data over existing AC wiring with zero new cable runs. 4-position screw terminal. Uses the ARG G3-PLC Module for mesh PLC networking.
Specifications
| Parameter | Methane (CH₄) | Ammonia (NH₃) | Hydrogen Sulfide (H₂S) |
|---|---|---|---|
| Sensor | INIR2-ME100-PC | PS1-NH3-100 | PS1-H2S-500 |
| Technology | NDIR infrared | Solid polymer electrochemical | Solid polymer electrochemical |
| Measurement Range | 0–100% vol. CH₄ | 0–100 ppm | 0–500 ppm |
| Resolution | 10 ppm | , | 1 ppm |
| Sensitivity | , | 20 ±10 nA/ppm | 90 ±20 nA/ppm |
| Max Overload | , | , | 1000 ppm |
| LDL / Detectivity | 100 ppm | , | ≤2 ppm |
| T‑90 Response | ~19 sec | , | <30 sec |
| Operating Temp | ‑20°C to +50°C | ‑20°C to +50°C | ‑40°C to +50°C |
| Sensor Output | Analog + UART | Electrochemical (current) | Electrochemical (current) |
| Certifications | ATEX, IECEx | , | RoHS |
| Communications | Modbus RTU (RS-485) or Power Line Communications, field selectable |
|---|---|
| Connector | 4-position screw terminal |
| Gas Channels | 3 (CH₄, NH₃, H₂S), customizable for other gas targets |
| Model | GSB-01 (Model 01, production-ready configuration) |
Applications
From safety compliance to process control.
The GSB-01 covers the three most common industrial gas hazards in one drop-in module, deployable over existing wiring infrastructure.
Safety & Leak Detection
Continuous monitoring for explosive, toxic, and asphyxiant gas hazards. Natural gas leak detection, sewage H₂S, confined space entry monitoring, OSHA PEL/IDLH compliance logging.
HVAC & Building Automation
Air quality and safety monitoring integrated directly into building systems. Parking garage detection, mechanical room safety, BMS integration via Modbus, demand-controlled ventilation.
Industrial Process Monitoring
Continuous gas monitoring in process environments and utilities. Chemical and pharmaceutical plants, agriculture and cold storage (NH₃), water treatment (H₂S).
Agriculture & Food Processing
Monitor ammonia in livestock facilities, cold storage, and food processing environments. Configurable thresholds and cloud alerts for remote monitoring.
Frequently Asked
GSB-01, FAQ
Common questions about the GSB-01 fixed gas sensor module.
What gases does the GSB-01 detect?
Methane (CH4) via NDIR infrared, plus ammonia (NH3) and hydrogen sulfide (H2S) via electrochemical sensors. The gas complement is configurable for other targets.
Is it certified for hazardous areas?
Yes, the CH4 sensor is ATEX and IECEx certified for Zone 1/2 hazardous areas.
Does it need new wiring?
No. It communicates over Modbus RTU (RS-485) or G3-PLC power line, data travels over existing AC wiring with zero new cable runs.
What is the methane range and resolution?
0–100% vol. CH4 by NDIR, with 10 ppm resolution.
Where is it used?
Sewage, utilities, agricultural, and industrial-hygiene settings, gas leak detection, confined-space entry, and mechanical-room safety.
Ready to deploy GSB-01?
Get pricing for single units, volume orders, and custom sensor configurations.