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Orbisphere CO2 Carbon Dioxide Sensor
SKU: 31490TC
Manufacturer: Orbisphere
Availability: Order only
- No sample preparation is required, the gas concentration is measured directly in the sample.
- Robust design for harsh plant environments and high sample pressures.
- High temperature resistant - CIP-resistant.
- Annual service and traceable calibration, fast and easy to complete with minimal downtime.
Description Specifications Recommended products
Description
Description
IMPORTANT! Do not place the sensor in a liquid sample until the gas purge system is operational and connected to a powered-on instrument. If the purge gas does not circulate, moisture can build up inside the sensor and damage it.
CO2 sensor key benefits
- Continuous CO2 measurements
- Selective measurement - the result is independent of the presence of other gases in the sample
- Fast response times to improve plant productivity
- Compact design for easy installation in a process line or flow chamber
The sensor head is protected by a plastic storage cover. An optional built-in temperature probe adapter is available, which allows the temperature probe to be installed directly into the sample stream.
The sensor is thoroughly tested and calibrated in a production environment following quality control procedures. Thus, there is no need for sensor maintenance or diaphragm replacement prior to installation. As a reminder, an easy-to-remove label is attached to the protective cap.
During a short shutdown period (eg weekends), the sensor can remain in place with the unit turned on and purge gas supplied. If the period of inactivity is longer, remove the sensor, wipe dry and store properly using the supplied plastic storage cap.
Measuring principle of carbon dioxide CO2 with the Orbisphere sensor
The thermal conductivity of a gas is defined as the heat (in calories) transferred in that gas in one second between two surfaces of 1 cm2 spaced 1 cm apart when the temperature difference between the two surfaces is 1 °C. More generally, the thermal conductivity of a gas is the ability of that gas to transfer heat.
Each gas has a different thermal conductivity. This method can only detect gases with specific thermal conductivity values. Consequently, the system is capable of measuring the concentration of a gas in a quasi-binary mixture when this gas has a distinctly different thermal conductivity rate to the background gas rate.
The sensor's measurement method is a combination of a gas diffusion membrane and a gas thermal conductivity detector. The small volume trapped between the diffusion membrane and the thermal conductivity sensor is periodically flushed with a purge gas. After each purge, the sample gas diffuses from the sample through the membrane, changing the thermal conductivity of the gas surrounding the detector. The rate of change in thermal conductivity makes it possible to calculate the gas concentration.
An electrically heated chip is used as a detector, separated from the sample by a gas diffusion membrane. Depending on the application, the membrane can be protected with a grid.
The gas diffuses through the membrane and contacts the chip. The change in thermal conductivity changes the resistivity of the chip. A resulting voltage variation at the chip is measured.
The purge gas enters through the connection, passes through the solenoid valve (when activated), passes through the thermal conductivity chip compartment under the diaphragm, and exits through the outlet.
31490TC Sensor Specifications
| Certifications | 2004/108/EC - EN 61326-1 |
| Cycle time | 22 sec |
| Flow rate | typical - 100 ml / min |
| Measuring range | at 25 ° C, 0 - 10 bar, 0 - 15 g/kg, 0 - 7 v/v |
| Protection class | IP65 |
| Sample pressure | 0 - 20 bar |
| Temperature range | -5 - 50 ° C |
| Sensor weight | 0.95 kg |
| Scope of delivery | sensor only |
Specifications
| Application area | Brewing, Beverages |
| Type | Industrial |
| Industry | Food and Beverage |
| Parameters | Carbon dioxide |
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