AG-GDO-400
AG-GDO-400 Oxygen Monitors
Fixed Oxygen Deficiency Monitor
Oxygen depletion and enrichment monitoring where nitrogen, argon or CO₂ is stored, 0–30 % vol
4–20 mA Modbus RTU
Features
- Nitrogen, argon and CO₂ cannot be sensed directly — their hazard is asphyxiation, and this monitor detects it as oxygen depletion
- Two field-adjustable alarm points cover both depletion and enrichment
- Mount in the breathing zone; add a low-level head where a heavier-than-air gas can blanket the floor
- 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 | Oxygen (O₂) — deficiency and enrichment |
| Measuring Range | 0–30 % vol |
| Sensor Technology | Electrochemical cell |
| Alarm Stages | Two, field-adjustable — typically < 18 % vol (deficiency) and ≥ 23 % vol (enrichment) |
| Output Signal | 4–20 mA and RS-485 Modbus RTU — confirm configuration at order |
| Supply Voltage | 24 V DC (mains-supply variant available — confirm at order) |
| Display | LCD showing live concentration |
| Protection Rating | IP65 / IP66 depending on variant — confirm at order |
| Certifications | Manufacturer states CE, ATEX |
Applications
- Rooms with bulk nitrogen, argon or CO₂ storage
- Cryogenic vessel and dewar stores
- Laboratories and cold rooms with an inert gas supply
- Confined plant rooms, basements and purge-gas 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.
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Ready to specify?
Send us your pipe size, media, range and protocol — we'll confirm availability and lead time.
sales@agcontrolli.com