4 ~ 20mA loop detection instrumentation amplifier circuit diagram ISO122P 124 XTR101 RCV420


Posted on Mar 28, 2007

As shown in FIG grounds ISO122P/124 and loop current transmitting circuit XTR101, isolated RTDs loop current configuration of the receiving circuit RCV420 4 ~ 20mA loop detecti


4 ~ 20mA loop detection instrumentation amplifier circuit diagram ISO122P 124 XTR101 RCV420
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on instrumentation amplifier. Resistance temperature detector (RTD) to detect the temperature change, the temperature change into an electrical signal input XTR101, XTR101 converted into the 4 ~ 20mA current output, through the twisted-pair transmission by RCV420 reception, and then converted into 4 ~ 20mA current voltage signal, amplified to the isolation amplifier ISO122P, after the ISO122P isolation amplifier output 0 ~ 5V voltage.




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