Convert Voltage to Current:
Measuring 0-10Vdc signal with a device that will only measure current inputs is incredibly easy. If the currently accessible input module accepts a signal of 0-20mA, but may not accept a signal of 0-10Vdc directly.
Ohms law is used to calculate the value of a resistor to convert the 0-10Vdc signal to a current
Convert Current to Voltage:
Measure 0-20ma with a device measuring only voltage inputs. If the accessible voltage input module accepts a 0-10Vdc signal, but a 0-20ma signal may not be accepted immediately.
Ohms law is basically used to calculate a value of the resistor to transform the 0-20ma signal to a voltage.
In order to prevent harm, you need to guarantee that in all conductor instances the internal current source has short-circuit protection.
Due to its temperature dependence and inaccuracy, the internal resistor is a cause of mistake.
It is suggested to use resistors with tolerances that are as low as possible to achieve measuring outcomes that are as accurate as possible.