The Span ChekTM 2400 (or SC2400) is a portable permeation system designed for field calibration of air quality analyzers, toxic gas analyzers, area gas monitors, and other gas sensing devices. It may be used with passive sensors as well as instruments that have a built-in sample pump. Interchangeable Trace SourceTM TM disposable permeation tubes provide a stable output of pure analyte gas that mixes with a larger controlled flow of filtered ambient air to form a calibration gas standard. Accurate concentrations of gas standard mixtures can be generated to “verify” or calibrate devices throughout the plant or facility. Sulfur detectors, Nitrogen dioxide detectors, fixed Ammonia detectors, or others can be “bump” checked to ensure proper operation.
The SC2400 has a durable carrying case with an adjustable shoulder strap for easy transport. It weighs approximately 11 pounds and can easily be carried up steps or ladders to ensure safe responses of gas monitors for selected gases.
The SC2400 can produce trace gas concentrations from <1 ppm to 100 ppm (depending on permeation tubes and operating parameters). Concentrations are varied by adjusting the ambient air pump rate, the permeation oven temperature, or the number or type of permeation tubes. The instrument can be used with a variety of compounds by installing the appropriate permeation tubes. Multiple compatible tubes can be used to generate a mixture or increase component concentration.
