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DIFFERENTIAL PRESSURE TRANSMITTER - USER GUIDE
5. POWER
1. Supply Voltage
• 1-5 V: 9 to 55 Vdc Max
• 4-20 mA: 10.5 Vdc (At Terminal, No Load),
16.5 Vdc (250 ohm Load) to 55 Vdc Max (28 Vdc Max for IS)
• 4-20 mA/HART: 10.5 Vdc (At Terminal, No Load),
16.5 Vdc (250 ohm Load) to 55 Vdc Max (28 Vdc Max for IS)
• RS485 (Modbus): 9 to 30 Vdc Max
2. Current Consumption
• 1-5 V: 5 mA (Max)
• 4-20 mA, 4-20 mA/HART: 21 mA (Max)
• HART Multi-drop: 4 mA
• RS485 (Modbus): 12 mA (Max)
3. Grounding
• To avoid ground loops, shielded twisted pair signal cable is
recommended. Shielded layer utilizes single-grounding, insulated
from the pressure transmitter, with grounding at the control cabinet.
4. Surge Protection
• The transmitter has been tested to withstand a transient surge up to
2000 V (common mode) or 1000 V (normal mode) without damage
(Per IEC Std. 61000-4-5).
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