Ohio Lumex - Model 915J - Continuous Emissions Mercury Monitor
From Continuous Emissions Monitors
The 915J Continuous Emissions Mercury Monitor is an online mercury process monitor designed for use in challenging conditions including coal-burning utilities, cement kilns, incinerators, industrial boilers, and other industrial facilities. Our mercury CEMs have been tested in multiple baseline studies, slipstream testings and mercury control technology performance evaluations throughout North America. They are known for high sensitivity, interference free measurements (thanks to Zeeman atomic absorption spectrometer) and more than 98% data availability. Simple and modular design guarantees an easy installation. They are rugged, portable and require minimal maintenance.
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PS 12A performances were demonstrated through mult...
PS 12A performances were demonstrated through multiple RATA tests at US Power Plants and results were presented at many conferences as well as published in papers and magazines. The rugged and simple design results in maximum ease of use, lower installation costs, high reliability, easy maintenance, and smaller space requirements.
915 J Components
It is a modular set designed for 8-hour installation time consisting of 4 easily movable or hoist-able modules:
- Probe : 4 inch ANSI flange, optional lengths, 35-40 lbs. Hastelloy
- Filter dilution conversion box : 35-40 lbs. Dry converter technology
- Temperature controlled analyzer enclosure : 150lbs. Fiberglass Enclosure is self-heated and cooled, ambient operational range -10-50°C, NEMA 4X. Rust proof. Undaunted with exposure to the elements.
- Analyzer console box : 100 lbs. Provided in a rolling shipping pelican case for easy in-the-field replacement
Advantages
- True Continuous Monitoring: Proven to be Rugged at multiple High Temperature & Non-scrubbed Inlets (ESP, SCR, NSCR, FGD) as well as Outlet (at stack) Parametric Testing. High Sensitivity: Very Accurate at low mercury levels.
- Detection: 0.1 to 100ug/m³ in real time, one sample point displayed per 30 seconds. Easy to swap in the field or ship back for repairs to manufacturer. Analyzer console is a modular self-contained system enclosed in an easily shippable Pelican case. This makes it easy to replace and service. Just remove console from the enclosure, set onto a pallet and ship back to Ohio Lumex. You can replace it with another console which is on standby at your location or overnighted to you from Ohio Lumex. Color coded connections minimize the replacement time to 1-2 hours.
- Low Maintenance: No Expensive Consumables. 2-3 Hours of maintenance on a quarterly basis. Optional yearly service by shipping only analyzer console back to Ohio Lumex.
Key Features
- Spectrometer : The 915 J features a highly sensitive atomic absorption spectrometer with Zeeman background correction providing interference free measurements.
- The Probe/Filter : Sampling is based on high velocity extraction, filtering, and dilution. No mechanical pumps are used and are instead replaced by plant air. Critical orifice provides precise sample dilution. The probe and filter are self-cleaning based on periodical blowback eliminating the “reactive ash” Hg scrubbing effect.
- Conversion is thermal at 750°C measuring Total Hg. Speciation is provided by bypassing converter and measuring Elemental Hg only.
- Calibration : Built in Elemental Hg calibrator with low span (2-5 ug/m³). No other calibration source required.
- Umbilical Lines : Heated line from 10ft to 50ft (others available).
- Data Acquisition/Communications : Built-in industrial grade computer, real time readings with Excel data file or direct communications with ESC8832 via Modbus TCP. On-Line remote data transfer and analyzer control/calibration capabilities.
- Utilities Requirements : Power: 110/220 volts, 2000 watts.
- Compressed air (dry, -40°C), 1 SCFM at 80 PSIG or plant air at 2 SCFM at 90 PSIG.
- WARRANTY : The system is assembled and tested in Twinsburg, Ohio. The system must pass measurement error test at 3 levels per Method PS 12A.
- One year 100% warranty on parts and labor, except consumables (filters, heaters, scrubbers, converter and Hg lamp).
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