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 that accepts 4–20 mA / Modbus RTU signals.
Other Gas Detection
AG-GDC-100
Fixed Combustible Gas Detector
Explosion-proof catalytic bead detector for methane and combustible gases, 0–100 % LEL
4–20 mAModbus RTU
AG-GDT-300 Fixed Carbon Monoxide Detector
Explosion-proof electrochemical CO detector for occupied plant rooms, 0–1000 ppm
4–20 mAModbus RTU
AG-GDO-400 Fixed Oxygen Deficiency Monitor
Oxygen depletion and enrichment monitoring where nitrogen, argon or CO₂ is stored, 0–30 % vol
4–20 mAModbus RTU
Ready to specify?
Send us your pipe size, media, range and protocol — we'll confirm availability and lead time.
sales@agcontrolli.com