Process variable transmitter with removable terminal block
First Claim
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1. A process variable transmitter comprising:
- a sensor terminal block comprising a plurality of sensor line connectors to connect to sensor lines from at least one process variable sensor, the sensor terminal block defining a reception area that in a first instance accepts a removable standard power terminal block and in a second instance accepts a removable transient power terminal block, the removable standard power terminal block comprising at least two power line connectors for connecting to at least two respective power lines that are external to the standard power terminal block and provide power to the standard power terminal block, the removable transient power terminal block comprising at least two power line connectors for connecting to the at least two respective power lines, at least two power terminals and transient power protection components electrically coupled between the at least two power line connectors and the at least two power terminals, the transient power protection components suppressing transient power above a threshold limit to limit the power reaching the at least two power terminals; and
one of the removable standard power terminal block and the removable transient power terminal block inserted in the reception area of the sensor terminal block.
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Abstract
A process variable transmitter includes a sensor terminal block having a plurality of sensor line connectors to connect to sensor lines from at least one process variable sensor. The sensor terminal block defines a reception area that in a first instance accepts a removable standard power terminal block and in a second instance accepts a removable transient power terminal block. One of the removable standard power terminal block and the removable transient power terminal block is inserted in the reception area of the sensor terminal block.
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Citations
17 Claims
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1. A process variable transmitter comprising:
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a sensor terminal block comprising a plurality of sensor line connectors to connect to sensor lines from at least one process variable sensor, the sensor terminal block defining a reception area that in a first instance accepts a removable standard power terminal block and in a second instance accepts a removable transient power terminal block, the removable standard power terminal block comprising at least two power line connectors for connecting to at least two respective power lines that are external to the standard power terminal block and provide power to the standard power terminal block, the removable transient power terminal block comprising at least two power line connectors for connecting to the at least two respective power lines, at least two power terminals and transient power protection components electrically coupled between the at least two power line connectors and the at least two power terminals, the transient power protection components suppressing transient power above a threshold limit to limit the power reaching the at least two power terminals; and one of the removable standard power terminal block and the removable transient power terminal block inserted in the reception area of the sensor terminal block. - View Dependent Claims (2, 3, 4)
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5. A terminal block for a process variable transmitter, the terminal block comprising:
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a shroud having a raised sensor section comprising a plurality of sensor line connectors for connecting to sensor lines and a recessed power section having a power interface wherein the power interface is recessed relative to at least one of the sensor line connectors; and a power terminal module having a plurality of power line connectors for connecting to power lines and a mating power interface mated with the power interface of the shroud, the power terminal module positioned within the recessed power section. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A method comprising:
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accessing a terminal block permanently installed in a process variable transmitter; inserting a power terminal module into a recess of the terminal block such that a power interface in the recess mates with a power interface on the power terminal module; and securing the power terminal module to the terminal block such that power line connectors on the power terminal module are accessible and such that a surface of the power terminal module and a surface of the terminal block together partially define a well for wires that are to be connected to the power line connectors. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification