Thermo Scientific 200LS Dilution Probe Controller

The Thermo Scientific 200LS Dilution Probe Controller is a specialized instrument designed for use in Continuous Emissions Monitoring Systems (CEMS), particularly for managing dilution probes in air quality and emissions analysis. It facilitates precise control of dilution air and zero air flows to ensure accurate sampling of gases such as NOX, O2, and other pollutants from industrial stacks or exhaust systems. Key features include multiple span ports (SPAN 1-5) for calibration gases, pressure gauges for monitoring zero and dilution air (up to 100 psi), and a rotary selector for modes like sample, zero, and span. This controller is ideal for environmental compliance monitoring in power plants, refineries, and manufacturing facilities, offering reliable performance in harsh conditions with robust construction. Advantages over similar products include its integration with Thermo Scientific analyzers, ease of calibration, and modular design for field serviceability. Drawbacks may include its age (likely pre-2010s model) leading to potential obsolescence and the need for periodic maintenance on mechanical components like gauges. The unit appears used with minor wear, no visible damage, and includes rear connections for spans, instrument air, and outputs. For detailed resources, refer to the Thermo Fisher Scientific website for the 200LS manual (e.g., search 'Thermo Scientific 200LS manual PDF' on thermofisher.com) and CEMS dilution system guides.