Abstract: A faceplate connection assembly and method adapted to promote detection of a missing or defective seal element. The faceplate connection includes a surface member having a pair of opposing face elements. A seal seating depression adapted to accept a compressible seal element disposed at least partially across at least one face. A fluid transport channel of open groove construction is disposed in intersecting relation to the seal seating depression. The fluid transport channel is in fluid communication with a port at an exterior portion of the faceplate connection assembly. According to the method a tracer fluid is introduced at a predefined edge of the seal seating depression and migration of the tracer fluid across the seal seating depression is monitored. Detection of migration across the seal seating depression indicates a missing or defective seal element.

Abstract: A faceplate connection assembly and method adapted to promote detection of a missing or defective seal element. The faceplate connection includes a surface member having a pair of opposing face elements. A seal seating depression adapted to accept a compressible seal element disposed at least partially across at least one face. A fluid transport channel of open groove construction is disposed in intersecting relation to the seal seating depression. The fluid transport channel is in fluid communication with a port at an exterior portion of the faceplate connection assembly. According to the method a tracer fluid is introduced at a predefined edge of the seal seating depression and migration of the tracer fluid across the seal seating depression is monitored. Detection of migration across the seal seating depression indicates a missing or defective seal element.

Abstract: A microwave power sensor utilizing a semiconductor power absorption element which is mounted on a fin-line structure within a waveguide channel. In order to check calibration of the sensor, a coaxial line is used to feed a relatively low frequency reference signal to the power sensor. The power element is positioned between the input port of the waveguide and a coaxial line input port at which the reference signal is applied. The use of a precise and accurate reference signal enables the power sensor to be used for microwave measurements.