OPA-102/101
OPERATION MANUAL
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SECTION 4. MECHANICAL CIRCUIT
4-1 Principle of Measurement
Attach light source at the end of the sample-shell where smoke pass through and attach
detecting part at the other end of the sample-shell, and it detects the smoke density
then converting it into figures and display.
① Purge pan
② Sampling-shell.
③ Sampling-shell constant temperature purpose heater.
④ Concentrating light lens
⑤ Light source(Green LED)
⑥ Detector (Photodiode)
⑦ Collecting gas inhaling hole.
⑧ Light source control circuit
⑨ Signal input and Analyzing circuit
⑩ AD Converter circuit
⑪ Displaying part
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