HACH
HACH Orbisphere Electrochemical Oxygen (O₂) Sensor, Stainless Steel, 50/100 bar, EPDM O-Ring, fast temperature change option
HACH Orbisphere Electrochemical Oxygen (O₂) Sensor, Stainless Steel, 50/100 bar, EPDM O-Ring, fast temperature change option
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Orbisphere 311XX - the ultimate in O2 sensors
The patented polarographic sensor design is a proven performer wherever knowledge of O2 content is critical. From beverage quality control to corrosion monitoring in power generators, from package sampling to chemical manufacturing, this sensor provides fast, accurate oxygen measurements, in gaseous or liquid samples.
A wide range of temperature and pressure ranges is made possible by the exclusive valve seat sealing, whereby the sensor cathode is mechanically tensioned against a ceramic valve seat to ensure the integrity of the seal. This design enables a vanishingly small residual signal, for improved accuracy.
All these oxygen sensors use the deep-draw membrane mounting method for a uniformly thin layer of electrolyte for faster response and superior stability. Coupled with a screw-on protection cap, the sensor provides in-service intervals of up to a year.
Benefits
Guard Ring Electrode Design
An auxiliary guard ring electrode surrounds the working electrode to shield against the influence of other gases and improve stability.
Rugged Construction
Use for harsh chemicals, hot CIP and high pressure situations.
Flexibility
Installs in-line for process control, or in flow chamber for spot measurement. Cable detaches at sensor end for installation and maintenance flexibility.
From trace levels to super saturation
Unrivalled detection limit of ± 0.1 ppb or 100 ppt
Specifications
Technical Attributes
| Accuracy | ±1% of reading, or ± lower measurement range, whichever is greater |
| Ambient Temperature | -5 - 100 °C (23 - 212 °F) |
| Certifications | 2004/108/EC - EN 61326-1 |
| Fast Temperature Change Option | Yes, 50 bar |
| Flow Rate | Recommended flow rate in flow chamber 2935A: 20 mL/min 2952A: 30 mL/min 2956A: 180 mL/min 29552A: 50 mL/min |
| Material | O-Ring: EPDM |
| Parameter | Oxygen |
| Protection Class | IP68 / NEMA4 |
| Range | Range at 25 °C 2935A : 10 ppb-400 ppm or 20 Pa-1,000 kPa 2952A : 1 ppb-80 ppm or 5 Pa-200 kPa 2956A : 0.1 ppb-20 ppm or 0.25 Pa-50 kPa 29552A : 2 ppb-80 ppm or 5 Pa-200 kPa |
| Response Time | 2935A: 2.5 min 2952A: 38 s 2956A: 7.2 s 29552A: 90 s |
| Sample Pressure | 0 - 50 bar |
| Sensor material | Stainless Steel |
| Special Features | Silver guard ring |
| Temperature Range | Temperature compensated range from -5 - 50 °C (23 - 122 °F) |
| Warranty | 12 months |
| Weight | 0.6 kg |
| What's included? | Sensor and manual. Controller, sensor cable, flow-chamber or process connection must be ordered separately. |
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