APT3200
Smart Pressure Transmitter
Operation Manual M3200-E01G
29
Duon System Co.,Ltd.
4.7.6 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.
z
General Standard : 11.9 to 45 Vdc
z
Hart Communication : 17.4 to 45 Vdc
z
KOSHA Explosionproof : 11.9 to 45 Vdc
z
CSA Explosionproof : 17.4 to 42 Vdc max.
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 Model APT3200 Smart Pressure Transmitter Power Supply