The Monitor Labs ML® 9810A 9810B with IZS Ozone and ML 9811 analyzer utilized a single cell ultraviolet absorption method for measuring ozone in air. The analyzer featured a long measurement path resulting in a highly sensitive instrument with a detection limit of less than 0.4 parts per billion. The ML 9810 is able to be configured with an internal or external sample pump. The internal pump configuration utilizes microprocessor control to maintain sample flow through feedback of the instrument’s pressure sensors.

ML9810 Maintenance Typical operational time of these internal pumps is expected to be between 3-5 years before maintenance is needed. In fact the life of the pump can be extended through flipping the carbon vanes on the pump. This should be considered only a temporary fix designed to maintain instrument operation until the pump can be serviced replaced and should be done in consultation with air monitoring specialist. External pump versions use critical orifices to maintain sample flow.

If you are looking to upgrade your ML 9810, ML 9811 or other products, then contact American Ecotech for a simple upgrade.

The ML 9810 also features an option for internal zero/span (IZS). The IZS utilizes an ozone generating lamp to produce desired ozone concentrations and an on board zero air scrubber to provide ozone free air to both the instrument and the ozone generator. The ozone generator has a range of 0.025 ppm to 0.250 ppm.

The ML9811 is designed to serve as a primary or transfer ozone standard. The ML 9811 features two on board pumps for the ozone generator and the measurement system. The ML 9811 uses a feedback system to maintain the desire ozone output. An external manifold is provided for calibration of other analyzers. An onboard zero air source is also included. Annual maintenance of the ML9810 and ML 9811 entails replacement of o-rings in the measurement cell and o-rings and a sintered filter in the flow block. Annual service kits are available which contain all the o-rings and sintered filters as well as schematics for completing service. In addition, the measurement cell should be cleaned using lint-free wipes and alcohol, with care taken not to scratch the measurement cell.

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Last Updated on Thursday, January 07 2010 01:13