The CARBOTEC TR-PT is a high-precision inline CO₂ sensor from Centec, designed for continuous measurement of dissolved carbon dioxide in beer and beer-mixed beverages based on the proven pressure and temperature method (Henry's Law). Several times per minute, the measuring chamber closes and expands, allowing CO₂ to transition from liquid to gas phase until equilibrium pressure is reached; CO₂ concentration is then determined from the measured pressure and temperature values. The sample is returned to the product after each cycle with no losses. Automatic temperature compensation via integrated Pt100, full CIP compatibility, and Varivent DN65–DN150 connection make it a reliable and low-maintenance inline measurement solution.
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CARBOTEC TR-PT, Inline CO₂ Sensor for Beer and Beer-Mixed Beverages, Centec
CARBOTEC TR-PT
Centec
The CARBOTEC TR-PT is a high-precision inline CO₂ sensor from Centec for continuous dissolved carbon dioxide measurement in beer and beer-mixed beverages. Its measurement principle is based on Henry's Law: several times per minute, the measuring chamber integrated into the sensor head closes and its volume suddenly expands. This expansion causes a phase transition of CO₂ from the liquid product into the gas phase within the chamber. Within a few seconds, equilibrium pressure is established in the chamber, which depends directly on the CO₂ content of the product. CO₂ concentration is then calculated from the measured pressure and temperature values. After each measurement cycle, the sample is returned to the product stream with no losses. Temperature drift is automatically compensated by an integrated Pt100 sensor. The instrument is fully CIP-compatible and can be deployed as a standalone inline sensor or integrated with other Centec systems including CARBOTEC NIR, Carbonator, DeCarbonator, and CarboBlender.
Key Features CARBOTEC TR-PT
- Proven pressure/temperature measurement method based on Henry's Law — reliable, high-accuracy CO₂ determination in beer and beer-mixed beverages.
- High accuracy ±0.05 g/L and outstanding reproducibility ±0.01 g/L across the full 0–10 g/L range.
- Sample returned to product after each measurement cycle — zero product loss.
- Multiple short measurement cycles per minute for near-continuous process monitoring.
- Automatic temperature compensation via integrated Pt100 sensor.
- Hygienic design; fully CIP-compatible; wetted materials 1.4404 / AISI 316L, EPDM FDA, PTFE FDA.
- Compatible with Varivent inline housings DN65–DN150; other connections available on request.
- I/O: 6 digital inputs (24 V DC); 3 digital outputs (24 V DC); 2 analogue outputs (4–20 mA); Profibus DP optional.
- Modular integration with CARBOTEC NIR, Carbonator, DeCarbonator, and CarboBlender systems.
- IP65; 24 V DC; low maintenance design.
Applications
The CARBOTEC TR-PT is suited to continuous inline CO₂ monitoring and control in beer production and beer-mixed beverage manufacturing, where high-accuracy dissolved CO₂ measurement directly in the process stream is essential for product quality, consistency, and taste reproducibility.
Installation and Safety Notes
Install inline using Varivent DN65–DN150 housings or alternative connections as specified. Power: 24 V DC. Fully CIP-compatible — no removal required during cleaning cycles. Working pressure max. 10 bar; operating temperature −10 to +100 °C. Profibus DP optional. Consult the technical datasheet for full wiring and installation specifications.
Technical Specifications
| Measured parameter | Dissolved CO₂ content |
| Measurement method | Pressure and temperature measurement in measuring chamber (Henry's Law) |
| Application | Beer; beer-mixed beverages |
| Measurement range | 0–10 g/L CO₂ |
| Accuracy | ±0.05 g/L |
| Reproducibility | ±0.01 g/L |
| Response time | ≤20 s (multiple short cycles per minute) |
| Sample return | Sample returned to product after each cycle — no product loss |
| Temperature sensor | Pt100 (automatic temperature compensation) |
| Working pressure | Max. 10 bar |
| Operating temperature | −10 °C to +100 °C |
| Wetted materials | 1.4404 / AISI 316L; EPDM FDA; PTFE FDA |
| Process connection | Varivent inline housings DN65–DN150; others on request |
| Digital inputs | 6 × 24 V DC |
| Digital outputs | 3 × 24 V DC |
| Analogue outputs | 2 × 4–20 mA |
| Profibus DP | Optional |
| Protection rating | IP65 |
| Power supply | 24 V DC |
| CIP compatibility | Full CIP compatibility |
| Design | Hygienic; low maintenance; modular integration available |
| Manufacturer | Centec GmbH |
| Brand | Centec |
