Current Analog Input Module 4AI

The CT-3234 4-channel current analog input module by Sichuan Odot delivers robust, high-integrity signal acquisition for demanding industrial applications worldwide, directly addressing global pain points such as electrical noise in current loops, complex sensor power requirements, and vulnerability to voltage surges. 

Supporting 4 channels of 0–20mA or 4–20mA current input, the module aligns with standard industrial transmitter outputs and accepts both 2-wire sensors (requiring external loop power) and 4-wire active sensors, offering maximum field flexibility. 

A key differentiator is its magnetic isolation between the internal backplane bus and field inputs—eliminating ground loops and blocking common-mode interference for stable data transmission. Each channel interfaces directly with active analog current-output sensors and features built-in TVS overvoltage protection, safeguarding against lightning strikes, switching transients, and ESD events. This makes the CT-3234 exceptionally reliable in harsh environments like oil & gas, mining, and chemical processing.

 Already deployed in Middle Eastern pipeline monitoring stations, South American mine Control Systems, and Eastern European wastewater plants, it integrates seamlessly with Siemens, Rockwell, and other major PLC platforms and complies with CE and industrial EMC standards. As a high-protection, plug-and-play industrial current analog input module, the CT-3234 ensures safe, accurate, and maintenance-free signal front-end performance for global automation projects.

Q：What current input types does CT-3234 support?

A：0~20mA or 4~20mA single-ended.

Q：What are typical applications of CT-3234?

Q：What is the input accuracy of CT-3234 in high temperature?

A：±0.3% @25℃, ±0.5% within -20~70℃.