VA-3111 Signal Isolator Unit

Feature & Principle

It receives 4-20mA analog signal from field transmitters, adopts optoelectronic isolation technology to separate field side and control side circuits. It outputs isolated standard 4-20mA signal to PLC or DCS, suppresses electromagnetic interference and avoids measurement drift caused by ground potential difference.

Specifications

Model: VA-3111 Signal: 4-20mA input / 4-20mA output Isolation: Galvanic isolation Power supply: DC24V Mounting: DIN rail Protection: IP20 Certification: CE

Components & Diagnostics

Opto-isolation chip, signal conditioning PCB, power regulation circuit, terminal block, status indicator LED. Common faults: no output signal, signal value deviation, ground interference, power supply input failure.

Product Brief

VA-3111 signal isolator, process automation spare widely used for chemical, water treatment and power plant analog signal transmission isolation.