Sigma 4000 multipoint stream selectors from Trace Analytical can dramatically reduce the cost of ultra high purity (UHP) gas monitoring. By multiplexing several sampling points to a single ta3000 or ta5000 Process Gas Analyzer, a gas manager can ensure that UHP quality product is supplied to process tools without dedicating an instrument to each gas stream. Controlled by the gas chromatograph, a Sigma 4000 stream selector can poll several gas streams in sequence, or can be programmed to switch between the inlets and outlets of large scale purifiers to verify their performance.
- Four sample inlets, two cal. gas inlets
- ¼-inch VCR gas ports
- UHP shut-off valves
- Rapid sequencing between gas steams
- Orbitally-welded and vacuum brazed joints