ATT2100 TEMPERATURE TRANSMITTER
Operation Manual M2100-REV-G
37
4.12 Power Supply Voltage and Load Resistance
When configuring the loop, make sure that the external load resistance is within the range in the
figure below. Since the voltage of transmitter terminal input is same as follows.
General Standard
: 11.9 to 45 Vdc (for the ATEX 11.9 to 42Vdc)
And maximum loop current is 24mA, Load resistance R:
R = (E-11.9) / 0.022 (E = Power Supply Voltage)
[Note] In case of an intrinsically safe transmitter, external load resistance includes safety barrier
resistance.
Figure 4-5. HART Communication Applicable Range