SPECIFICATION SHEET • SI METRIC
CAT: ELECTRICAL-ENERGY
4-20mA Analog Sensor Signal Scaling
Convert a raw 4-20mA sensor signal to calibrated engineering units (IEC 61131-3 compliant).
💡 Engineering Knowledge PrimerIndustrial transmitters convert physical process variables (pressure, temperature, flow) into a standardized 4-20mA analog signal. Linear scaling maps raw signal current to engineering units for PLC/DCS input modules (IEC 61131-3).
CALCULATION SCOPE — Deterministic calculation within the published assumptions. Independently verify all design decisions and project-specific code requirements.
INPUT DESIGN PARAMETERS (SI)
mA
mA
mA
bar
bar
CALCULATED SPECIFICATION OUTPUT
Scaled Process Engineering Value
⚡50 bar
| Transmitter Signal Span % | 50 % |
Related planning checklists
This calculator appears in the following engineering planning checklists:
HVAC Controls & Automation
Controls Engineer1. 4-20mA Analog Sensor Signal Scaling2. PID Controller Loop Tuning (Ziegler-Nichols)3. Heat Exchanger LMTD & Temperature Efficiency (TEMA)4. Industrial Chilled Water Cooling Capacity (HVAC)
Technical Methodology & Engineering Principles
GOVERNING EQUATION
Scaled Value = Min_EU + [ (Signal - Min_Sig) / (Max_Sig - Min_Sig) ] × (Max_EU - Min_EU)
Assumptions & Scope
Linear 2-wire / 4-wire analog signal transmitter input.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.