G4AD3 Opto22

G4AD3 Analog Input Module

G4 I/O Series | 4–20 mA Current Input | Isolated Loop Supply

The G4AD3 is a high-performance analog input module within the G4 I/O family, engineered to convert industrial 4–20 mA current signals into digital data with exceptional accuracy and reliability. Featuring transformer and optical isolation, it delivers robust protection against electrical noise and ground loops—ensuring stable operation in demanding environments.

🔧 Key Specifications:

• Input Range: 4–20 mA nominal

• Extended Input Capability: <3 mA to >35 mA (under/over-range)

• Channels: Single-channel input

• Isolation: Full channel-to-channel and input-to-output isolation

• Signal Conversion: Current-to-digital with high linearity

✅ Key Features:

• Integrated Isolated Loop Supply:
  Unlike traditional modules, the G4AD3 can power the current loop internally—eliminating the need for an external power supply (typically 15–48 VDC). This reduces wiring complexity and installation cost.

• Complete Electrical Isolation:
  Transformer and optical isolation on both the input and channel side prevent ground loop issues and signal interference across multiple channels.

• Reliable Signal Integrity:
  Engineered for accurate current measurement in industrial settings, including process control, sensor monitoring, and remote I/O applications.

🛠️ Benefits:

• Saves space and cost by removing the need for separate loop power sources

• Simplifies wiring and reduces installation time

• Enhances system reliability by preventing signal distortion and ground loops

• Ideal for distributed I/O and analog signal acquisition systems

The G4AD3 is a proven choice for OEMs, integrators, and control engineers who need precise current input readings with minimal setup and maximum isolation.