| 摘要 |
A measuring instrument having a switchable measuring and operating electronics system for transmitting a measurement signal, wherein the measuring instrument comprises at least one measurement transducer having an electrical current regulating circuit (15) for outputting a regulated current, wherein at least one first mode of operation allows a current to be set in a first current range, and an at least second mode of operation allows a current to be set in a second current range, which second current range comprises a wider range than the first current range, wherein the measuring instrument also comprises a microcontroller circuit (13), and the microcontroller circuit (13) is connected to the electrical current regulating circuit (15), wherein the microcontroller circuit (13) is connected to the current regulating circuit (15) via a line (36) for transmitting a digital signal for actuating the current regulating circuit (15), wherein the digital signal has a LOW and a HIGH state, and wherein the actuation of the current regulating circuit by the digital signal can set an output current with a current intensity value in a first current intensity range for the LOW state and with a current intensity value in a second current intensity range for the HIGH state of the digital signal in the first mode of operation, and a method. |
