Most voltage output transmitters are intended for fairly short distance use. The lines are very susceptible to noise and are useful only over short distances.
The most common use for these types of transmitters are from a readout in a control room environment to a data logging computer. This provides the operator with a visual reading of the temperature, as well as providing a scaled output to the computer for processing.
In some installations, the computer is the only device seeing the data, and based on that data, will display messages or values to the operator. These transmitters and readouts are useful and range from a little over a hundred dollars to several hundred dollars.
Voltage mode transmitters and outputs are extremely susceptible to induced noise, and should only be used in electrically quiet and short distance (less than 50 feet) applications.