Patent ID: 6050145
Filing Date: 2000-04-18
Classification: G01L

Abstract:
A transmitter connectable to a process line and providing an output responsive to a pressure in the process line, the transmitter comprising:a housing forming a wall around a hole extending into an interior cavity formed in the housing;a sensor for sensing the pressure;a circuit coupled to the sensor and providing the output; andan isolating assembly mounted in the hole isolating fluid in the process line from the interior cavity, the isolating assembly comprising:an isolator plug insertable into a process fluid passage and joined to the housing, the isolator plug having first and second spaced end surfaces, the first end surface forming a process fluid pressure surface and, having a diaphragm coupling the pressure via a passageway to a distal end of the plug;a header assembly joined to the second end surface of the plug to form a sensor cavity holding the sensor and receiving the pressure from the passageway;a first connection between the header assembly and the second end surface of the plug to secure the header assembly to the plug;a second connection between the header assembly and the second end surface of the plug to secure the header assembly to the plug;the header assembly including a header and a ring member joined to the header, the first connection being formed on the header and the second connection being formed on the ring member to secure the header assembly to the plug.