PA4000 Photoacoustic Infrared Gas Monitor

The PA4000 Photoacoustic Infrared Gas Monitor provides high-performance gas monitoring while eliminating interference from water vapors, offering a reliable, low maintenance, cost-saving solution in situations where contaminants or interference preclude use of other measurement techniques. The PA4000 Gas Monitor is designed with an advanced photoacoustic, infrared (IR) sensor to monitor a variety of gases including hydrocarbons, solvents, alcohols, CO2, CO, and other dangerous gases. It is stable and highly selective to the gas of interest and can operate for months with virtually no drift. The PA4000 Gas Monitor eliminates a problem common to infrared analyzers: cross-sensitivity to water vapor. It features a proprietary sensing technique that determines the amount of water vapor in the sample and subtracts it from the gas reading. This technique allows the gas reading to be stable with no compromise to measurement sensitivity.
With a range of 0-1000 ppm depending on the specific configuration, the PA4000 Gas Monitor is accurate to ± 2 ppm at 0-100 ppm and ± 10% of reading from 100-1000 ppm. The PA4000 features sensitivity of 2 ppm and resolution of 1 ppm, with specifications for other ranges dependent on application. For certain gases, it detects concentrations as low as 0.01 ppm. The PA4000 Gas Monitor is easy to install, operate and maintain. Most installations are as simple as mounting the instrument, connecting the sample line and powering the unit. In its most common configuration the monitor draws gas samples via an internal pump, which enables the device to monitor areas that are hard to reach. The PA4000 can also be used by delivering a pressurized sample to the unit. In case of blockage by a dirty end-of-line filter or clogged sample line, the instrument alerts operators by producing a fault.