Oil in Water Analyzer |
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| Operational Theory 1 | ||||||||||||||||||||||||||||||||||||||||
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Interconnection Diagram
1.3Photometer Amplifier
The photo detector converts the photo energy striking it to electrical energy. The magnitude of the photo energy pulses that strike the detector is determined by absorbance by the sample and the properties of the optical filters.
The detector output, which is a sequence of pulses that directly reflect the photo energy transmitted by the measuring and reference filter, is a measure of the concentration of the component of interest in the sample. The difference in energy between the measuring and reference pulse is related exponentially to the concentration of the component of interest.
The photo detector current output is amplified by a current to voltage (I to E) converting amplifier, followed by a second amplifier. The gain of the amplifier can be adjusted to obtain any desired output level.
Teledyne Analytical Instruments | Part II: |
