The low powered solid state light source emits negligible heat and is electronically modulated. This eliminates chopping mechanisms and their inherent problems. High frequency modulation creates a more stable opacity response and eliminates the ambient light interference found in low frequency modulation of incandescent lamp opacity monitors. The long life of LEDs, creates a trouble free optics assembly.
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The OPAL Series opacity monitoring systems are manufactured to the design specifications of the revised USEPA Performance Specification 1 and the associated manufacturing standard ASTM D 6216-98. They are fully compliant with the requirements for industrial air emissions monitoring of the environmental regulators in most Asian and Pacific Rim countries. |
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