Loop Impedance & Voltage Drop Calculator - Design Calculators

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Loop Impedance & Voltage Drop Calculator (4-20 mA)

This professional tool calculates the total loop resistance and voltage drop in 4-20 mA current loops. Accurate calculation is vital to ensure sufficient voltage is available at the field device for proper operation, especially in long cable runs or complex instrumentation systems across all industries worldwide.

Select Unit System:

Loop Parameters

Power Supply Voltage (V_supply)

Transmitter Minimum Voltage (V_TX,min)

Receiver/Load Resistance (R_load)

Loop Length (L)

Wire Properties

Wire Material: Copper Aluminum

Wire Gauge Input Method: AWG Cross-sectional Area (mm²)

Wire Gauge (AWG)

Cross-sectional Area (A)

Advanced Loop Parameters

Ambient Temperature (T)

Intrinsic Safety Barrier Resistance (R_barrier)

Max Allowed Voltage Drop (%)

Loop Calculation Results

Supply: 0.00 V

Remaining: 0.00 V

Status: N/A

Parameter	Value