A field device comprising: a detector comprising: a sensor configured to acquire an analog measurement signal; an analog-to-digital converter configured to convert the analog measurement signal to a digital signal; and a first processor configured to convert the digital signal into a measurement value to generate a digital signal representing at least the measurement value; a converter configured to convert the digital signal representing at least the measurement value into an instrumentation signal to output the instrumentation signal, the converter comprising a second processor; wherein the sensor comprises a first sensor configured to acquire a first analog measurement signal and a second sensor configured to acquire a second analog measurement signal, wherein the analog-to-digital converter comprises a first analog-to-digital converter configured to convert the first analog measurement signal to a first digital signal and a second analog-to-digital converter configured to convert the second analog measurement signal to a second digital signal, wherein the first processor is configured to perform a calculation using the first digital signal converted by the first analog-to-digital converter and the second digital signal converted by the second analog-to-digital converter to convert the digital signal into the measurement value, wherein the detector further comprises a digital-to-analog converter configured to convert a digital signal obtained by the calculation of the first processor into an analog signal, and wherein the detector is configured to transmit the digital signal representing at least the measurement value generated by the first processor together with the analog signal converted by the digital-to-analog converter to the converter. a detector comprising: a sensor configured to acquire an analog measurement signal; an analog-to-digital converter configured to convert the analog measurement signal to a digital signal; and a first processor configured to convert the digital signal into a measurement value to generate a digital signal representing at least the measurement value; a sensor configured to acquire an analog measurement signal; an analog-to-digital converter configured to convert the analog measurement signal to a digital signal; and a first processor configured to convert the digital signal into a measurement value to generate a digital signal representing at least the measurement value; a converter configured to convert the digital signal representing at least the measurement value into an instrumentation signal to output the instrumentation signal, the converter comprising a second processor; wherein the sensor comprises a first sensor configured to acquire a first analog measurement signal and a second sensor configured to acquire a second analog measurement signal, wherein the analog-to-digital converter comprises a first analog-to-digital converter configured to convert the first analog measurement signal to a first digital signal and a second analog-to-digital converter configured to convert the second analog measurement signal to a second digital signal, wherein the first processor is configured to perform a calculation using the first digital signal converted by the first analog-to-digital converter and the second digital signal converted by the second analog-to-digital converter to convert the digital signal into the measurement value, wherein the detector further comprises a digital-to-analog converter configured to convert a digital signal obtained by the calculation of the first processor into an analog signal, and wherein the detector is configured to transmit the digital signal representing at least the measurement value generated by the first processor together with the analog signal converted by the digital-to-analog converter to the converter. wherein the sensor comprises a first sensor configured to acquire a first analog measurement signal and a second sensor configured to acquire a second analog measurement signal, wherein the analog-to-digital converter comprises a first analog-to-digital converter configured to convert the first analog measurement signal to a first digital signal and a second analog-to-digital converter configured to convert the second analog measurement signal to a second digital signal, wherein the first processor is configured to perform a calculation using the first digital signal converted by the first analog-to-digital converter and the second digital signal converted by the second analog-to-digital converter to convert the digital signal into the measurement value, wherein the detector further comprises a digital-to-analog converter configured to convert a digital signal obtained by the calculation of the first processor into an analog signal, and wherein the detector is configured to transmit the digital signal representing at least the measurement value generated by the first processor together with the analog signal converted by the digital-to-analog converter to the converter.