AG-GDT-320 Toxic Gas Detectors
Fixed Hydrogen Sulphide Detector
Electrochemical H₂S detection for wet wells, sewers and biogas plant
4–20 mA Modbus RTU
Features
- H₂S is heavier than air and collects in sumps, wet wells and trenches — mount low
- Smell is not a warning: H₂S deadens the sense of smell at hazardous concentrations
- Two field-adjustable alarm stages drive ventilation and access interlocks
- Reports directly to BMS or PLC — no dedicated gas panel required
Enquire about this product
No forms — email directly to sales@agcontrolli.com
24-month warranty · Technical support included
Specifications
| Target Gas | Hydrogen sulphide (H₂S) |
| Measuring Range | Configured to application — confirm at order |
| Sensor Technology | Electrochemical cell |
| Alarm Stages | Two, field-adjustable |
| Output Signal | 4–20 mA or RS-485 Modbus RTU — confirm configuration at order |
| Supply Voltage | 24 V DC |
| Display | LCD showing live concentration |
| Housing | Explosion-proof housing |
| Certifications | Manufacturer states CE, ATEX |
Applications
- Wastewater pumping stations and wet wells
- Sewage treatment works
- Digester and biogas plant
- Oil and gas separation areas
Compatible Platforms
Reliable Controls MACH-ProSysSiemens Desigo CCHoneywell EBISchneider EcoStruxureJohnson Controls Metasys
Works with any BMS or controller that accepts 4–20 mA / Modbus RTU signals.
Other Gas Detection
AG-GDT-330
Fixed Chlorine Detector
Electrochemical Cl₂ detection for dosing rooms and cylinder stores, 0–20 ppm
4–20 mAModbus RTURelay
AG-GDT-340 Fixed Carbon Dioxide Detector
Explosion-proof NDIR CO₂ detector for occupied spaces where CO₂ is generated or stored, 0–5000 ppm
4–20 mAModbus RTU
AG-GDC-100 Fixed Combustible Gas Detector
Explosion-proof catalytic bead detector for methane and combustible gases, 0–100 % LEL
4–20 mAModbus RTU
Ready to specify?
Send us your gas type, range, location and output signal — we'll confirm availability and lead time.
sales@agcontrolli.com