Selective thermal conductivity (TC) sensor for carbon dioxide (CO₂) with nitrogen purge, protective cap, and external temperature sensor adaptor. Designed for direct inline CO₂ measurement in processes with pressures up to 20 bar.
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31490TC Orbisphere Carbon Dioxide (CO₂) TC Sensor with nitrogen purge, protection cap, ext. temp. sensor (20 bar)
31490TC
Description
The Orbisphere 31490TC Carbon Dioxide (CO₂) TC Sensor is a selective thermal conductivity sensor engineered for direct inline measurement of CO₂ in gaseous or liquid samples without the need for prior sample preparation. It incorporates a nitrogen purge connection, a protection cap for improved durability, and an external temperature sensor adapter for temperature compensation. The rugged design supports sample pressures up to 20 bar and withstands harsh plant conditions and high sample temperatures, making it suitable for beverage and industrial process monitoring.
Features and Benefits of 31490TC
- Selective carbon dioxide (CO₂) thermal conductivity sensor — 31490TC.
- Nitrogen purge connection to reduce cross-interference and improve selectivity.
- Protection cap and external temperature sensor adaptor for accurate temperature compensation.
- Rugged construction designed to withstand high pressures up to 20 bar and harsh operating environments.
- No sample preparation required; gas concentration measured directly in the sample stream.
- Fast response time enhances productivity and process control.
Usage and Handling
Install the 31490TC CO₂ sensor in a compatible flow chamber or inline process connection using proper fittings. The sensor cable (e.g., 32505.03) must be ordered separately and connected to a compatible Orbisphere TC controller. Ensure the nitrogen purge is supplied and verify temperature compensation via the external sensor adapter. Perform calibration and maintenance according to the manufacturer's instructions. Handle and store the sensor in its original packaging until installation to prevent contamination.
Technical Specifications
| Parameter | Specification |
|---|---|
| Article number | 31490TC |
| Product type | Thermal conductivity (TC) carbon dioxide sensor |
| Measured parameter | Carbon dioxide (CO₂) |
| Sensor technology | Thermal conductivity (TC) |
| Purge connection | Nitrogen purge |
| External temperature compensation | Included adaptor |
| Maximum sample pressure | 0–20 bar |
| Typical flow rate | 100 mL/min |
| Accuracy (20–50 °C within ±5 °C of calibration) | The greater of ±1 % of reading or ±8 mbar or ±0.012 g/kg or ±0.006 V/V |
| Accuracy (0–50 °C independent of calibration) | The greater of ±2 % of reading or ±14 mbar or ±0.048 g/kg or ±0.02 V/V |
| Protection class | IP65 |
| Operating temperature | 0–50 °C |
| Weight | ~0.95 kg |
| Included | Sensor only; controller, cable, flow chamber not included |
| Manufacturer | Hach |
