The invention relates to a standard source device for calibrating a two-wire
system 4-20mA current
signal conditioning module. The standard source device comprises an
ammeter, a display window, a gear dial selection knob, a wiring port, a
resistor and a box body, according to the invention, the defect that the operation of manually adjusting different current values by using a sliding
potentiometer is tedious and time-consuming when the two-wire 4-20mA current
signal conditioning module is calibrated is overcome, and the rapid and accurate input of a current reference value is also realized through the device. According to the device, key equipment is indispensable when the calibration of the two-wire
system 4-20mA current
signal conditioning module is completed, and the
linearity and accuracy of the measurement of the two-wire
system 4-20mA current
signal conditioning module are ensured, so that the
correctness of data measured in an arc wind tunnel test is ensured, the quality of each data in the test is improved, and the measurement accuracy of the two-wire system 4-20mA current
signal conditioning module is improved. And the method plays an important role in
data acquisition of an arc wind tunnel test.