A current calibrator or process calibrator is used for basic measurements, tests and regulation techniques for setting and verifying test installations and instrumentation. A current calibrator has different magnitudes that should be attributed to normal measurement signals. These measurement signals or regulated magnitudes are denominated as the test signal, which our current calibrator can provide. It is defined as 0 to 20mA, 4 to 20mA, 0 to 10V and 0.2 to 1 bar. These magnitudes signify for example temperature, output or settings of a test valve (0 to 100% of valve opening).