2230XP Silica Analyzer
Thermo Scientific Orion
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5
Analyzer Hardware Configuration
and Calibration
Each analyzer is setup at the factory, and shipped ready to be commissioned for on-line
analysis. This section describes the hardware setup in case maintenance or other post
calibration adjustment after service is required.
The Orion 2230XP Silica Analyzer is based on colorimetric detection principles. The analyzer
uses optical components that require initial setup at the factory and can be further tuned or re-
calibrated by a trained technician.
This section describes the operation and calibration of the following assemblies: Optics, Heater,
Pumps and Analog Outputs.
Optics Calibration
Orion 2230XP Silica Analyzer optics consists of a NIR LED light path and a photo-detector. The
analyzer is capable of driving three LED and the intensity of each of the LED can be individually
varied. The light path is preset in the reaction cell sample chamber. The photo detector
receiving the light energy is connected to an amplifier with programmable gain. The output of
the photo detector amplifier is digitized and measured in mV. Optics calibration in the analyzer
is done in two stages. In the first stage, the level of stray light is recorded. The LED light source
is switched off and the output of the photo detector is recorded. The second stage of calibration
consists of adjusting the intensity of the LED and the gain of the photo detector amplifier to get
an optimum level of output close to a fixed reference level. This is optimized for the specific
LED and the results of the calibration are stored.
S E C T I O N 5