Gas admission device for testing operability and calibration of gas measuring instruments, has a test chamber device connected to main pipes such that calibration gas and zero-point gas in pipes are fed time-sequentially in a row

摘要

The test gas connectors (30.0-30.3) connect the test gas containers (11-16) to a pressure reduction valve (45.1). A first main pipe (201) supplies calibration gas to first container. A second main pipe (202) supplies zero-point gas to second container. The second pipe is connected to a compressor (71) for introducing ambient air. A test chamber device (58.1) is formed for receiving the calibration gas and/or the zero-point gas and is connected to the pipes such that the calibration gas in first pipe and the zero-point gas in second pipe are fed time-sequentially in a row. An independent claim is included for a method for performing evaluation of predetermined concentration of test gas in measurement gas.