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DIFFERENTIAL PRESSURE TRANSMITTER - USER GUIDE
d. HART Multi-drop Wiring
• Multi-drop up to 10 devices for Intrinsic Safety wiring.
• Multi-drop up to 15 devices for Explosion-proof wiring.
*Click here to view third-party barrier board reference for use
with this device.
Minimum Power Supply Voltage:
V min = 15.5 Vdc + 0.004 x N devices x (250 + R_loop)
Example: four devices with round loop resistance 20 ohm
V min = 15.5 + 0.004 x 270 = 14.82 Vdc
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