Optical carbon dioxide sensor CARBOTEC NIR

Description

CARBOTEC NIR is a very accurate sensor for continuous measurement of dissolved CO2, designed for applications requiring maximum sensitivity and highest accuracy. It is easy to operate and requires little or no maintenance.

Advantages of the CARBOTEC NIR carbon dioxide sensor:

• Optical technology based on Attenuated Total Reflection (ATR)
• Determination of “true” carbon dioxide content not influenced by other gases
• Short response time and excellent long-term stability
• Highly accurate and virtually maintenance-free
• Various flange connections available
• Hygienic execution and full CIP capability

The new generation of CARBOTEC NIR sensors is based on Attenuated Total Reflection (ATR) technology. Near infrared (NIR) light is transmitted through a sapphire crystal. The NIR light reflects several times on the inner surfaces of the crystal, while the outer surfaces are in contact with the carbonated liquid. Since CO2 molecules absorb the specific wavelength of the transmitted light, each reflection decreases the intensity according to the CO2 content in the product. The sensor provides the “true” carbon dioxide content, as quantified by the NIR absorption. The measurement result is neither influenced by other gases in the product not by its colour, turbidity and viscosity. Due to the absence of moving parts, the instrument is virtually maintenance-free. Any temperature drifts of the measured signal are automatically compensated for by an internal Pt100 sensor.

Technical Data