How to measure the current with the Devtrong TRION board?

Different TRION boards can measure current, TRION-1603-LV-6-L1B, TRION-1620-LV-6 - L1B, TRION-1620-ACC-6-L1B These boards can directly input current signals and measure current through an internally integrated 10 Ω resistance. Other boards can also be used for current measurement, but external shunt is required to support this function. These boards are: TRION-1603 - LV-6-BNC TRION-1620-LV-6-BNC, TRION-1620-ACC-6-BNC, TRION-1820 - dLV, TRION-1600-dLV and TRION-2402-x. TRION-1820-PA board is excluded. If you select the current amplifier mode board, you need to add a shunt with a predetermined resistance value that can be selected from the drop-down menu

From a technical point of view, measuring the current of the shunt resistor is to measure the potential difference between the two ends of the shunt resistor???? The voltage U is measured and the resistance R is known, so the current I can be determined. Therefore, if the current on the shunt resistor is to be measured, a voltage signal caused by the potential difference caused by the current passing through the external shunt will be provided to the TRION module. This voltage will be recalculated into current through the above formula, which is automatically completed by OXYGEN. Therefore, the resistance value of this shunt resistor must be consistent with that shown in Fig The resistance value selected from the pull-down menu in 7.39 is the same. Of course, shunt resistors completely inconsistent with the resistance values in the pull-down menu can also be used. If a resistance other than the one in the pull-down menu is used, the coefficient between current and voltage needs to be calculated and filled in manually. The setting method is as follows:

• Set the amplifier to voltage mode

• Change the physical unit to A (ampere) and fill in the resistance value as the proportional coefficient, that is, 50 Ω

• With these settings, the method of using voltage to calculate current is consistent with the method of selecting external shunt resistance through pull-down menu in current mode. Then, the measured voltage signal is multiplied by the filling proportional coefficient, and the result is the current. corresponding current I = ???????????????????????????? ???? ???????????????????? ???? * ???????????????????????????????? ???????????????????????????? ????  

• Considering the physical unit, the following equation is equivalent: [??????????????????????????????????????] If the TRION board is integrated with a 10 Ω shunt for current measurement, all the above will not apply! The above only applies to measuring current with an external shunt.