Anton Paar Carbo Online CO₂ Sensor
| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Origin Category | Imported |
| Model | Carbo |
| Product Type | Online Refractometer-Based CO₂ Sensor |
| Temperature Control | Yes |
| Digital Display | Yes |
| Measurement Range | 0–20 g/L (0–10 vol%) |
Overview
The Anton Paar Carbo Online CO₂ Sensor is an optical, in-line measurement system engineered for continuous, real-time quantification of dissolved carbon dioxide concentration in liquid beverages. Unlike traditional pressure-based or electrochemical CO₂ analyzers, the Carbo series employs a proprietary optical refractometric principle—calibrated against density and refractive index shifts induced by CO₂ dissolution—to deliver high-accuracy, maintenance-free monitoring directly within production pipelines. This physics-based approach eliminates drift associated with membrane degradation, electrode fouling, or temperature-dependent gas solubility modeling. Designed specifically for hygienic food & beverage environments, the Carbo platform supports uninterrupted operation across diverse product matrices—including turbid, fiber-rich, or highly viscous beverages—without recalibration or flow conditioning. Its core application lies in closed-loop carbonation control, where sub-5-second measurement intervals enable dynamic feedback to dosing valves, ensuring consistent carbonation levels from startup to steady-state operation.
Key Features
- Optical refractometry-based CO₂ detection—no consumables, no membranes, no electrodes
- Zero-maintenance operation for Carbo 6100 and Carbo 6300 models; Carbo 5100 requires annual service only
- EHEDG-certified design (EL Class I for Carbo 6300; EHEDG-compliant construction for Carbo 5100 and 6100)
- NAMUR NE 107–compliant self-diagnostic functionality with status reporting via fieldbus or analog output
- Integrated temperature measurement (−5 °C to +40 °C operating range; up to +130 °C for CIP cycles)
- Hygienic process connection compatible with Tuchenhagen Varivent® N sanitary fittings
- IP65/IP67-rated enclosure for wet industrial environments
- Support for multi-gas analysis: simultaneous CO₂, N₂, and N₂O quantification via dual-principle fusion (patent US-2021349036-A1)
Sample Compatibility & Compliance
The Carbo sensor accommodates full-spectrum beverage types—carbonated soft drinks, beer, sparkling wine, cider, flavored waters, and fruit-based beverages containing suspended pulp or fibers—without signal attenuation or clogging risk. Its optical path geometry and flow cell design prevent particle interference while maintaining laminar flow integrity. All variants comply with EHEDG Guideline No. 8 (hygienic design), FDA 21 CFR Part 11–ready data logging (when paired with mPDS 5 or Pico 3000 software), and GMP/GLP-aligned audit trail capabilities. The Carbo 6300’s dedicated beverage-type recognition channel enables automatic calibration switching between product families—eliminating manual reconfiguration during line changeovers. Pressure rating extends to 10 bar (145 psi) relative, supporting integration into high-pressure carbonation vessels and inline mixers.
Software & Data Management
Data acquisition and system integration are supported through multiple interoperable platforms: embedded touchscreen HMI (Carbo 5100), standalone Pico 3000 PC software, or centralized mPDS 5 secondary display unit. Communication protocols include 4–20 mA analog output, HART, Modbus RTU/TCP, PROFIBUS DP, PROFINET IO, and EtherNet/IP—enabling seamless connectivity to DCS, SCADA, or MES systems. All firmware versions support timestamped measurement logging with configurable sampling intervals, alarm thresholds, and diagnostic event history. When deployed with mPDS 5, the system meets FDA 21 CFR Part 11 requirements for electronic records and signatures, including user access control, audit trail generation, and data integrity validation.
Applications
- Closed-loop carbonation control in bottling and canning lines
- Real-time CO₂ monitoring during fermentation and maturation (beer, sparkling wine)
- Quality assurance for nitrogenated beverages (e.g., nitrogen-infused coffee, stouts)
- In-process verification of N₂O dosing in premium soft drinks
- CIP cycle validation via post-clean residual CO₂/N₂ detection
- Batch-to-batch consistency tracking across multi-product facilities
FAQ
How does the Carbo sensor differ from conventional CO₂ analyzers?
It uses optical refractometry instead of pressure transduction or electrochemical sensing—eliminating moving parts, membranes, and calibration drift.
Can Carbo measure gases other than CO₂?
Yes: when combined with complementary measurement principles, it quantifies N₂ and N₂O in carbonated beverages per patent US-2021349036-A1.
Is the sensor suitable for CIP/SIP environments?
Yes: Carbo 6300 withstands 130 °C for 30 minutes; Carbo 6100 handles up to 95 °C for 4 hours—fully compliant with standard hygienic cleaning protocols.
What is the minimum required flow rate for accurate measurement?
No minimum flow dependency—the sensor delivers valid readings even during static or low-flow conditions, enabling true in-line measurement without bypass loops.
Does Carbo require periodic factory recalibration?
No: Carbo 6100 and 6300 are zero-maintenance devices; Carbo 5100 requires only annual verification using certified reference standards.
