Field device adapter for wireless data transfer

A field device adapter for wireless data transfer, comprising:

• an adapter housing having a first end and a second end, the first end being designed such that the field device adapter can be mechanically connected to a field device, and the second end being designed such that a two-wire line for data transfer can be electrically connected to the field device adapter, wherein the adapter housing also has an adapter chamber between the first and second ends;
• a supply electronics unit arranged in the adapter chamber and designed to provide a supply voltage via a voltage tap at the two-wire line that is connectable at the second end;
• an adapter electronics unit arranged in the adapter chamber and to which the supply voltage is fed;
• and
• an adapter connection cable located at the first end for electrically connecting the adapter electronics unit to a field device electronics unit of the field device that is connectable at the first end,
• wherein the adapter electronics unit is designed to communicate two-conductor signals between the field device electronics unit electrically connectable at the first end by means of the adapter connection cables and the two-wire line connectable at the second end, and wherein the adapter electronics unit is also designed to convert the two-conductor signals into radio signals, to convert radio signals into the two-conductor signals, and to transmit and receive the radio signals by radio.

An automation field device for capturing and/or controlling a process variable, comprising:

• a field device housing having at least one housing opening;
• a field device electronics unit disposed within the field device housing and designed to communicate data in the form of two-conductor signals based on a HART protocol;
• and
• a field device adapter, including:
• an adapter housing having a first end and a second end, the first end being designed such that the field device adapter can be mechanically connected to a field device, and the second end being designed such that a two-wire line for data transfer can be electrically connected to the field device adapter, wherein the adapter housing also has an adapter chamber between the first and second ends;
• a supply electronics unit arranged in the adapter chamber and designed to provide a supply voltage via a voltage tap at the two-wire line that is connectable at the second end;
• an adapter electronics unit arranged in the adapter chamber and to which the supply voltage is fed;
• and
• an adapter connection cable located at the first end for electrically connecting the adapter electronics unit to a field device electronics unit of the field device that is connectable at the first end,
• wherein the adapter electronics unit is designed to communicate two-conductor signals between the field device electronics unit electrically connectable at the first end by means of the adapter connection cables and the two-wire line connectable at the second end, and wherein the adapter electronics unit is also designed to convert the two-conductor signals into radio signals, to convert radio signals into the two-conductor signals, and to transmit and receive the radio signals by radio,
• wherein the field device adapter is mechanically attached at the first end to the at least one housing opening and the adapter electronics unit is electrically connected to the field device electronics unit via the adapter connection cable so that the two-conductor signals between the field device electronics and a two-wire line which can be connected at the second end are transferred by the adapter electronics unit.