AF45 Single Wavelength UV Absorption Sensor

http://www.optek.com/Product_Detail.asp?ProductID=6

AF46 Dual Wavelength UV Absorption Sensor

http://www.optek.com/Product_Detail.asp?ProductID=7

תיאור

AF45-Single-Wavelength-UV-Absorption-SensorAF45 Single Wavelength UV Absorption Sensor

The model AF45 is a single channel Ultraviolet (UV) absorption sensor with a lamp compensation reference channel. The sensor is designed for inline operation and provides extremely accurate concentration measurements with great repeatability, linearity and resolution. The AF45 can be used for HPLC control, detection of aromatic compounds, organic load, protein concentration and other demanding applications.

The AF45 sensor uses light in the UV range at wavelengths of either 254, 280, 290, 300 or 313 nm. A precisely defined, constant light beam penetrates the process medium. The attenuation of the light intensity, caused by absorption and/or scattering by dissolved and undissolved substances, is detected by a sealed silicon photo diode.

The light intensity of the low-pressure mercury lamp itself is measured by a second hermetically-sealed silicon photo diode and compensates for any lamp intensity variations. This assures the highest level of precision and long-term performance.

The single crystal sapphire optical window provides superior resistance to all abrasive and corrosive media. The AF45 comes with a broad variety of line sizes, process connections and wetted materials and can be adapted easily to the process. NIST-traceable validation accessories provide absolute measurement confidence.

http://www.optek.com/Product_Detail.asp?ProductID=6

AF46-Dual-Wavelength-UV-Absorption-SensorAF46 Dual Wavelength UV Absorption Sensor

The model AF46 is an advanced, dual channel Ultraviolet (UV) absorption sensor with two additional lamp reference compensation channels. This sensor is designed for inline operation and provides accurate measurements with great repeatability, linearity and resolution. The AF46 is used for HPLC control, detection of aromatic compounds, organic load, protein concentration and other demanding applications.

The AF46 uses light in the UV range with selected wavelength combinations. Precisely defined, constant light beams penetrate the process medium. The attenuation of the light intensity, caused by absorption and/or scattering by dissolved and undissolved substances, is detected by photo diodes.

The dual channel measurement compensates for background influences at the specificed wave lengths. Two additional photo diodes compensate for any variations in lamp intensity for the highest level of precision and long-term performance.

The single crystal sapphire optical window provides superior resistance to all abrasive and corrosive media. NIST-traceable validation accessories provide absolute measurement confidence. The AF46 is available with a broad variety of line sizes, process connections and wetted materials and can be easily adapted to the process.

http://www.optek.com/Product_Detail.asp?ProductID=7