Leak detection system including photo ionization detector

A leak detection system comprising:

• a chamber support comprising:
• a first frame;
• a chamber supported by the first frame;
• and
• a trace gas supply configured to supply a trace gas mixture to a first volume defined between the chamber and a first side of a test part;
• and
• a test part support comprising:
• a second frame;
• an adapter supported by the second frame and configured to mate with a second side of the test part and to define a second volume between the second side of the test part and the adapter;
• a seal plate surrounding the adapter and configured to seal with the chamber;
• one or more inlets in fluid communication with the second volume;
• N outlets in fluid communication with the second volume, where N is an integer greater than one;
• N fans configured to create a second vacuum pressure in the second volume, to supply gas to the one or more inlets and to receive gas from a respective one of the N outlets;
• and
• N gas sensors configured to sense the trace gas mixture in the gas received from a respective one of the N outlets.