Final answer:
A signal conditioner is a device that converts one analog signal range to a different one for compatibility and accuracy in system communications.
Step-by-step explanation:
A signal conditioner converts from one analog signal range to a different analog signal range when the analog signal values do not match. Signal conditioners are used in various engineering applications where data from sensors need to be normalized or adjusted to be compatible with other system components or data acquisition devices. For instance, if a sensor outputs a signal in the range of 0-5V but the input device requires a signal in the range of 4-20mA, a signal conditioner would be used to convert the voltage range to the current range accordingly. This process ensures compatibility and accuracy in the communication between different electrical components or systems.