Description
The PO2M-D digital oximeter is designed to determine the dissolved oxygen content in beer, beverages, and wine during the production process—whether in production lines, cylindroconical tanks, bright beer tanks, or KEG barrels.
When used with the ICAS sampler, it can also be employed in a laboratory setting to measure the dissolved oxygen content in bottled or canned beverages. The ICAS sampling probe allows for the safe extraction of a beverage sample from a bottle or can into the oximeter, without contamination by oxygen from the ambient air.
The complete set of the oxymeter with the ICAS sampler :
Technical parameters:
| Parameter | Range/Value for version with the standard sensor (measure range of 0 to 10,000 ppb) | Range/Value for version with the PO2M-S2K sensor (measure 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 |
- Dimensions : H x W x D : 530 x 240 x 300 mm (21 x 9.5 x 12 inches )
- Weight : 3.0 kg
Range of supply:
- Measuring device
- Centring dish for bottles
- Interconnecting little hose
- Special holder for PET bottles (optionaly)
- Touch LCD panel for determination of the O2 content from measured values
- AC/DC adapter (1phase 220-240V 50Hz)
- User’s guide
Principle of measurement:
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 oxygen 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 oxygen value stabilizes before reading it.
Advantages & Benefits & Equipment
- 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.
- Flow independence: Oxygen measurement is independent of the flow rate of the measured medium.
- Simple operation: User-friendly controls.
- Selectable measurement ranges: The device is available in two measurement ranges of your choice. The standard measurement range is 0 to 10,000 ppb. For an additional charge, the unit can be equipped with a sensor featuring a lower range of 0 to 2,000 ppb. This sensor offers higher accuracy and a faster response time, making it ideal for detecting trace amounts of O2.
- Data logger function: Enables continuous measurement of O2 content in pipelines or tanks.
- Bluetooth interface: Values can be displayed on a mobile phone equipped with Bluetooth and the ArcAir software. The ArcAir software can be downloaded for free from Google Play or the App Store.
- User calibration: Allows for independent calibration of the O2 sensor by the user via a Bluetooth-enabled mobile phone with the ArcAir software installed.
- Simple maintenance: Regular zero-point calibration of the O2 sensor (0 ppb) is required at least once every six months.
How to find out level of the oxygen content from temperature and pressure measured ?
You can simply read the O2 content on the LCD :
Optional accessories :
| Code | Description | Price |
| PO2M-S2K | Special sensor (range of 0-2000 ppb) for the Portable digital dissolved oxygen meter | On demand |
| PO2M-PBH | Special holder for use with PET bottles | On demand |
Special holder for PET bottles (optional) :
Frequently asked questions :
What is difference between the standard sensor (0 – 10,000 ppb) and the special sensor (0 – 2,000 ppb) ?
The oximeter with the standard sensor 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 oxymeter with the special sensor (PO2M-S2K) 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 oxygen 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.
Reviews
There are no reviews yet.