OPM 3000 Opacity Dust Density Monitor - Non-compliant

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The OPM 3000 Opacity Dust Density Monitor is a high-performance opacity monitoring system with double-pass transmissometer.

SENSORS STANDARD Alignment viewing port - enables the operator to visually check system alignment at any time during operation Double pass measurement - dual beam measurement assures high sensitivity, freedom from errors due to vibration or minor misalignment Insensitive to ambient light - the solid-state light modulation system eliminates possible interference due to ambient light Automatic lamp aging compensation - all measurements are made on a ratio basis and are independent of the absolute intensity of the light source REMOTE CONTROL UNIT Panel-mount or DIN rail - compact size 3.78" x 3.78" x 2.52" (96x96x64mm) Display – LED back light Communications – 2 RS232/485 ports (selectable) Supports Modbus protocol Memory backup – battery lifetime typically 7 years Environment – IP65/NEMA4X Power – 12/24VDC Outputs – high opacity with time delay Expansion – up to 128 I/Os may be added via I/O expansion port

Emerson's Rosemount Analytical OPM 3000 stackmounting transmissometer sensor system consists of an optical transceiver mounted on one side of the stack and a retro reflector mounted on the other. The main light source is electronically modulated and projects a collimated beam of light, which is split into a reference beam and a measurement beam. The measurement beam is projected across the stack to a retro reflector, which reflects it back across the stack to the measurement detector. The output of the measurement and reference detectors are transmitted to the control roommounted monitoring unit where all output signals are analyzed. Emerson's OPM 3000 Opacity Dust Density Monitor ratio measurement technique provides continuous automatic compensation for variations in light source intensity to ensure prolonged instrument accuracy and stability. Since the OPM 3000 is insensitive to the absolute intensity of the light source, it is not affected by light source aging.