Anti-rotation arrangement for a detection device assembly

An anti-rotation arrangement for preventing rotation of a device comprising:

• an adapter having an upper portion and a lower portion, said lower portion including teeth formed thereabout, said upper portion being attachable to the device;
• a locking collar freely rotatable between said adapter and the device, said locking collar including a passage formed therethrough having an inner shoulder, said locking collar further including proximal and distal openings formed at opposite ends of said passage;
• a union having top and bottom portions, said top portion including teeth formed thereabout and said bottom portion being attachable to the fluid conduit, said top portion being attachable to said adapter through said locking collar such that said teeth of said adapter mate with said teeth of said union in such a manner that rotation of the device relative to the fluid conduit is prevented,
• wherein said adapter is seated against said inner shoulder of said passage and secured to the device through said proximal opening of said locking collar.

In combination, an adapter in an anti-rotation arrangement with a device attached to a fitting of a fluid conduit comprising:

• an adapter including an upper portion and a lower portion with a passage formed therethrough for communication with the fluid conduit, said passage being oriented in a perpendicular relationship with said fluid conduit and adapted to receive a portion of the device therethrough, said lower portion having teeth extending inwardly from around an outer circumference of said adapter, said upper portion being attachable to the device,
• a locking collar having a passage formed therethrough with distal and proximal openings;
• said passage including a inner shoulder adapted for seating said upper section of said adapter therein, said locking collar being freely rotatable between said adapter and the device, and
• a union having top and bottom portions and a passage in communication with said passage of said adapter and the fluid conduit, said top portion including teeth extending inwardly from around an outer circumference of said union, said bottom portion being attachable to the fitting of the fluid conduit, said top portion being attachable to said lower portion such that said teeth of said adapter mate with said teeth of said union so that rotation of the device relative to the fluid conduit is prevented.