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NDIR Gas Analyzer Instalation
Teledyne Analytical Instruments 21
• Isolated output (from each DO and ground)
To avoid external interference, the wiring from the analog output
signal, O
2
sensor input and contact input should be run separately from
that of power supply and contact output.
Note: Avoid excess noise generated by other nearby equipment,
by grounding the analyzer and using properly shielded
cables.
(5) Communication: RS-485 connector
(6) Timing of Contact Output for Calibration
1. Manual calibration: (See “Item 6.8 Calibration” if the analyzer is
equipped with the auto calibration feature).