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.
Ready to deploy GSB-01?
Get pricing for single units, volume orders, and custom sensor configurations.