Abstract:
A pressure transmitter (50) has a pressure sensor (24) coupled to an isolator diaphragm (18L/18H) by a fill fluid (22H/22L) such as oil. Means (52L/54H, 56) are provided for measuring the position of the isolator diaphragm (18L/18H) and comparing the measured position with an expected position to give an indication of fill fluid (22H/22L) leakage. Non-contact arrangements such as capacitive and ultrasonic techniques are disclosed for measuring isolator diaphragm (18L/18H) position, as well as contacting arrangements such as switches. The fill fluid loss arrangement can be incorporated into a two-wire transmitter, which transmitter can be made to send a warning signal to a control unit when fill fluid loss is detected.
Abstract:
A cable protector (40) comprises a cylindrical reel sleeve (41) having an opening (44) in a side wall (43), and an open bottom end. A cable (35), with first and second connectors, is helically wound around an axis (46) of the reel sleeve, the second connector (36) extends out through the bottom of the reel sleeve and is attached to a second circuit (20) board within a second housing (11). The first connector (37) is retained in the interior of the sleeve, to allow for the threading attachment of the second housing to a first housing (12) without damaging the cable. After attachment of the two housings, the first connector is passed out through the opening in the side wall and connected to a first circuit board (23) within the first housing. The helical winding of the cable permits the two housing to be repositioned rotationally after connection without causing cable twisting.
Abstract:
A manifold (10) includes a body having generally planar inlet surface (14). The inlet surface (14) includes a first inlet (16) and a second inlet (18) adapted for coupling to a pressurized process fluid. An outlet surface (22) on the manifold (10) is adapted for coupling to a co-planar transmitter and is at angle relative to the inlet surface (14). The manifold (10) includes an equalizing valve surface (24) opposite the outlet surface (22), and a perimeter therebetween. The outlet surface (22) includes first and second outlets (26, 28) in fluid communication with the first and second inlets (16, 18), respectively.
Abstract:
An assembly for aligning and supporting an adapter flange (15) for connecting fluid pressures to a pressure sensor body (11) in place on the body (11) and to keep the flange (15) in an unsealed condition to prevent pressurizing the body and flange until installation of permanent fasteners. The support fasteners (30) retain the flange (15) spaced from the body (11) sufficiently so that the flange (15) will not seal. This will prevent accidentally pressurizing the flange (15) and pressure sensor body (11) until permanent fasteners have been installed. The body (11) and flange (15) are shipped with at least one extra set of permanent fasteners (46, 50) different in length from the fasteners (23) used on the flange (15) to permit adding adapters (47) for a process connection. When a different thickness adapter (47) is used for process connection, only the correct length fasteners will be capable of being threaded into the threaded openings and also seal the flange or adapter.
Abstract:
An assembly for aligning and supporting an adapter flange (15) for connecting fluid pressures to a pressure sensor body (11) in place on the body (11) and to keep the flange (15) in an unsealed condition to prevent pressurizing the body and flange until installation of permanent fasteners. The support fasteners (30) retain the flange (15) spaced from the body (11) sufficiently so that the flange (15) will not seal. This will prevent accidentally pressurizing the flange (15) and pressure sensor body (11) until permanent fasteners have been installed. The body (11) and flange (15) are shipped with at least one extra set of permanent fasteners (46, 50) different in length from the fasteners (23) used on the flange (15) to permit adding adapters (47) for a process connection. When a different thickness adapter (47) is used for process connection, only the correct length fasteners will be capable of being threaded into the threaded openings and also seal the flange or adapter.
Abstract:
A cable protector (40) comprises a cylindrical reel sleeve (41) having an opening (44) in a side wall (43), and an open bottom end. A cable (35), with first and second connectors, is helically wound around an axis (46) of the reel sleeve, the second connector (36) extends out through the bottom of the reel sleeve and is attached to a second circuit (20) board within a second housing (11). The first connector (37) is retained in the interior of the sleeve, to allow for the threading attachment of the second housing to a first housing (12) without damaging the cable. After attachment of the two housings, the first connector is passed out through the opening in the side wall and connected to a first circuit board (23) within the first housing. The helical winding of the cable permits the two housing to be repositioned rotationally after connection without causing cable twisting.
Abstract:
An in-line pressure transmitter (10) for sensing an absolute or gage process pressure of a process fluid includes an in-line process coupling (14). The coupling has a mounting member (16) which includes a substantially flat mounting face (18) and a bore generally aligned with an isolation diaphragm assembly (30). The member (16) is configured to mount to a flat process coupling.
Abstract:
A manifold (10) includes a body having generally planar inlet surface (14). The inlet surface (14) includes a first inlet (16) and a second inlet (18) adapted for coupling to a pressurized process fluid. An outlet surface (22) on the manifold (10) is adapted for coupling to a co-planar transmitter and is at angle relative to the inlet surface (14). The manifold (10) includes an equalizing valve surface (24) opposite the outlet surface (22), and a perimeter therebetween. The outlet surface (22) includes first and second outlets (26, 28) in fluid communication with the first and second inlets (16, 18), respectively.
Abstract:
Un protecteur (40) de câble comprend un manchon (41) de bobine cylindrique, doté d'une ouverture (44) située dans une paroi latérale (43), ainsi que d'une extrémité inférieure ouverte. Un câble (35), comportant des premier et second connecteurs, est enroulé de manière hélicoïdale autour d'un axe (46) du manchon de la bobine, le second connecteur (36) sort par la partie inférieure du manchon de la bobine, et est fixé à une seconde plaquette de circuits (20) se trouvant à l'intérieur d'un second logement (11). Le premier connecteur (37) est maintenu à l'intérieur du manchon, afin de permettre la fixation filetée dudit second logement à un premier logement (12) sans endommager le câble. Après fixation des deux logements, on passe le premier connecteur par l'ouverture se trouvant dans la paroi latérale, puis on le connecte à une première plaquette de circuit (23) située à l'intérieur dudit premier logement. L'enroulement hélicoïdale du câble permet de repositionner par rotation les deux logements après connexion, sans torsader le câble.
Abstract:
An in-line pressure transmitter (10) for sensing an absolute or gage process pressure of a process fluid includes an in-line process coupling (14). The coupling has a mounting member (16) which includes a substantially flat mounting face (18) and a bore generally aligned with an isolation diaphragm assembly (30). The member (16) is configured to mount to a flat process coupling.