Solution:

We don't think it is a better way to check the accuracy of ADAM-3013/4013 by using accurate resistor, you are recommended to adopt Resistor Box or something else like Micro-10 to simulate RTD for checking the accuracy. Besides, the wiring connection is also important, there are 3 choices for your reference, including 2-wire, 3-wire and 4-wire. You'd better adopt 3-wire or 4-wire with twisted pair if you want to get accurate reading value.