Communication adapter for a transmitter of a field device

An adapter for a two-wire field device of process and/or automation technology, comprising:

• a communication unit for communication with an external unit;
• an energy storage unit for supply of at least the communication unit with electrical energy;
• and
• a first connection element for an electrical contacting of the adapter with a second connection element of the field device, wherein the second connection element is complementary to the first connection element, wherein the first connection element and the second connection element are embodied for supply of at least the adapter with electrical energy and for exchanging information.

A transmitter for a two-wire field device of process and/or automation technology, which transmitter serves for determining and/or monitoring at least one process variable of a liquid, comprising:

• an adapter including:
• a communication unit for wireless, bi-directional communication with an external unit;
• an energy storage unit for supply of at least the communication unit with electrical energy;
• and
• a first connection element for electrical contacting of the adapter with a second connection element of the field device, wherein the second connection element is complementary to the first connection element, wherein the first connection element and the second connection element are embodied for supply of at least the adapter with electrical energy and for exchanging information.

A two-wire field device of process- and/or automation technology, comprising:

• an adapter including:
• a communication unit for wireless, bi-directional communication with an external unit;
• an energy storage unit for supply of at least the communication unit with electrical energy;
• and
• a first connection element for electrical contacting of the adapter with a second connection element of the field device, wherein the second connection element is complementary to the first connection element, wherein the first connection element and the second connection element are embodied for supply of at least the adapter with electrical energy and for exchanging information.