The Orbisphere 31120.01 is a high‑performance electrochemical oxygen sensor for precise measurement of O₂ in gaseous or liquid samples at pressures up to 50 bar. It features robust stainless steel construction and an EPDM O‑ring, designed for industrial process control, beverage quality monitoring, and corrosion detection.
On order
31120.01 Orbisphere Electrochemical Oxygen (O₂) Sensor Stainless Steel 50 bar with EPDM O‑Ring
31120.01
Orbisphere
Description
The Hach Orbisphere Electrochemical Oxygen (O₂) Sensor (Part Number 31120.01) is engineered for accurate measurement of dissolved or gaseous oxygen in process and quality control applications. Utilizing a patented polarographic sensor design with a guard ring electrode, this electrochemical sensor delivers fast response and reliable performance with minimal residual signal. Constructed from stainless steel with an EPDM O‑ring, it withstands pressures up to 50 bar and is suitable for harsh industrial environments.
Advantages 31120.01
- High accuracy oxygen measurement from trace to saturation levels
- Patented polarographic sensor with guard ring electrode for improved stability
- Robust stainless steel construction for harsh process environments
- EPDM O‑ring sealing for reliable performance at up to 50 bar
- Fast response and superior stability even under fluctuating conditions
- Flexible installation inline or in flow chamber
Usage Instructions
Install the 31120.01 oxygen sensor into a compatible Orbisphere analyzer or controller according to Hach’s installation guidelines. Ensure proper sealing with the EPDM O‑ring and verify pressure ratings for the process environment. Calibration should be performed against known oxygen standards following the manufacturer’s procedures. Regular periodic inspection of the membrane and electrode assembly is recommended to maintain accuracy and service life.
Technical Specifications
| Parameter | Specification |
| Measured Substance | Oxygen (O₂) |
| Sensor Type | Electrochemical (polarographic) |
| Maximum Sample Pressure | Up to 50 bar |
| Construction Material | Stainless Steel |
| Sealing O‑ring | EPDM |
| Guard Ring Electrode | Yes (improves stability and reduces interferences) |
| Installation | Inline or flow chamber |
| Operating Media | Gaseous and liquid samples |
| Response Range | Trace levels to super saturation |
| Protection | IP68 / NEMA4 (varies by installation) |
| Included with Sensor | Sensor only; controller, cable, or flow chamber ordered separately |
| Brand | Orbisphere |
