Scalable process transmitter

A scalable transmitter module, comprising:

• a housing adapted to mount on a unitized sensor module, the housing having an outer wall surrounding a cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for connection to a wiring raceway to a remote receiver, the first and second openings to the cavity, and the cavity having a removable cover;
• and
• a circuit in the cavity having a plug adapted to mate with a feedthrough of the unitized sensor module, the circuit being adapted to receive a sensor output from the unitized sensor module and generate a scalable output on circuit terminals accessible by removing the cover, the scalable output being adapted for connection to the remote receiver.

A method of manufacturing a scalable transmitter module, comprising:

• forming a housing to mount on a unitized sensor module, the housing having an outer wall surrounding a cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for connection to a wiring raceway to a remote receiver, and providing openings through the first and second openings to the cavity, and covering the cavity with a removable cover;
• and
• installing a circuit in the cavity, the circuit having a plug adapted to mate with a feedthrough of the unitized sensor module, the circuit being adapted to receive a sensor output from the unitized sensor module and generate a scalable output on circuit terminals accessible by removing the cover, the scalable output being adapted for connection to the remote receiver.

A scalable transmitter module, comprising:

• means for housing adapted to mount on a unitized sensor module, the means for housing having an outer wall surrounding a cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for connection to a wiring raceway to a remote receiver, and openings through the first and second openings to the cavity, and a removable cover covering the cavity;
• and
• sensing means in the cavity, including a circuit having a plug adapted to mate with a feedthrough of the unitized sensor module, the circuit being adapted to receive a sensor output from the unitized sensor module and generate a scalable output on circuit terminals accessible by removing the cover, the scalable output being adapted for connection to the remote receiver.