At-line Digital O2 meter for beer and carbonated beverages (O2 GEHALTEMETER) Type OXI
The digital O2 meter OXI is used to determine the content of dissolved oxygen in beer, beverages, and wines during the production process on production lines, in cylindroconical and pressure tanks, as well as in kegs. It can also be used under laboratory conditions to measure O2 content in beverages packaged in bottles and cans. For these measurements, it is necessary to use the ICAS sampler, which enables safe sampling of the beverage from a bottle or can without contamination by oxygen from the ambient air.
At-line oxygen measurement in production:
As a portable instrument for measurements on production lines, tanks, or kegs during the manufacturing process. The portable O2 meter will be your ideal partner for daily analysis and troubleshooting.
Oxygen measurement in the laboratory:
The taste and shelf life of a beverage are significantly affected by the oxygen content in the package. The total amount of oxygen in the package can be determined using our OXI and the ICAS sampler. In this way, you can inspect your products and identify sources of O2 contamination. The instrument provides reliable results even for very small packages.
Technical description:
- Highly sensitive optical O2 sensor providing excellent measurement repeatability.
- The device is available in two oxygen measurement ranges, to choose from. The standard measuring range is from 0 up to 10,000 ppb. For an additional charge, the OXI can be equipped with a sensor with a lower range from 0 up to 2,000 ppb. This sensor offers higher accuracy and faster response time, ideal for O2 traces sensing.
- No influence from other dissolved gases.
- O2 measurement is independent of the flow rate of the measured medium.
- User-friendly operation.
- Data Logger function: enables continuous measurement of O2 content from pipelines or tanks.
- Values can be displayed on a mobile phone equipped with a Bluetooth interface and the installed ArcAir software. The ArcAir software can be freely downloaded from Google Play or the App Store.
- Option for independent user calibration of the O2 sensor using a mobile phone with a Bluetooth interface and the installed ArcAir software.
- Regular calibration of the O2 sensor zero point (0 ppb) is required at least once every six months.
Technical data:
| Parameter | Range/Value for type OXI (with range of 0 to 10,000 ppb) | Range/Value for type OXI-2000 (with range of 0 to 2,000 ppb) |
| Oxygen measuring range | 0 to 10 000 ppb | 0 to 2 000 ppb |
| Accuracy | 7 ppb | 1 ppb |
| Units | ppb, ppm | ppb, ppm |
| Max. temperature | 70°C | 70°C |
| Max. operating pressure | 6 bar | 6 bar |
| Instrument dimensions | 210 x 295 x 100 mm | 210 x 295 x 100 mm |
| Weight | 2 kg | 2 kg |
| Protection rating (with connector cover screwed on) | IP 54 | IP 54 |
| Interface | Bluetooth | Bluetooth |
| Memory | 300 measured values | 300 measured values |
| Power supply | AA 1.2V NiMH rechargeable batteries–6 pcs | AA 1.2V NiMH rechargeable batteries–6 pcs |
| Charging | AC/DC adapter 24V/200mA | AC/DC adapter 24V/200mA |
| Connection – one-touch fitting | Tubing outer diameter 4 mm | Tubing outer diameter 4 mm |
Working Procedure:
Connect the inlet one-touch fitting of the oximeter to the point where the dissolved oxygen content in the beverage is to be measured using the supplied tubing. Connect the outlet one-touch fitting of the oximeter to the drain using the supplied tubing. Allow the measured beverage to flow through the measuring chamber of the oximeter. The flow through the measuring chamber can be regulated using the valve located on the side of the instrument. Since the O2 measurement is not dependent on the flow rate of the measured medium, it is sufficient to set a minimal flow. Start the measurement by pressing the Enter key. Wait until the measured O2 value stabilizes before reading it.
Scope of Delivery:
- Portable OXI oximeter
- Charging adapter
- Connection tubing
- Operating manual
Accessories (optional):
- Sampler for taking samples from packages (bottles, cans), ICAS type (not included in standard delivery, available on request).
Advantages & Benefits:
- High accuracy and calibration capability: ideal for laboratories with an established ISO 9001/9002 quality system.
- Easy calibration using a mobile phone with Bluetooth.
- No influence from other dissolved gases.
- O2 measurement is independent of the flow rate of the measured medium.
- Excellent price-to-performance ratio.
- The measuring chamber is equipped with a transparent window, allowing visual inspection to ensure that CO2 bubbles are not forming on the oxygen sensor, which could affect measurement accuracy.
- User-friendly and reliable (simple operation).
Downloads
Product sheets, catalogues and technical documentation.
Frequently asked questions
What are the differences between the OXI and OXI-2000 models?
The OXI model is a universal instrument with a measuring range of up to 10,000 ppb, covering all common operational measurement needs in production. This versatility is, however, balanced by lower measurement accuracy. The OXI-2000 model allows measurements only up to 2,000 ppb but offers significantly higher accuracy. It is therefore intended primarily for checking oxygen content in the final product, where very low O2 concentrations are present.
How often does the oximeter need to be calibrated?
The oximeter must be calibrated at least once every six months.
What can affect the accuracy of oxygen measurement?
Measurement accuracy can be negatively affected especially using unsuitable tubing, through whose walls oxygen can permeate into the beverage. Silicone tubing, for example, is unsuitable because it is very permeable to oxygen. In contrast, tubing made of polyether polyurethane is suitable, as it does not allow oxygen to permeate.
Another possible source of error is leakage between the inlet tubing and the fittings, through which oxygen can enter the measured medium.
What is the minimum required purity of CO2 or N2 gas for displacing a beverage sample from its container into an oximeter, to avoid negatively affecting the oxygen measurement?
The minimum percentage purity of CO2 or N2 gas must be 99.999%, with a maximum impurity content of < 10 ppm, designated as grade 5.0.