Analog Input Current Input Module 8AI

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Product Description

Product Attributes

Model No.: CT-3238

Packaging & Delivery

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SPS-C Series IO_20260119_11180739

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Product Description

CT 3238 Analog Input Current Input Module 8AI

The CT-3238 8-channel current analog input module by Sichuan Odot is engineered for high-density, mission-critical data acquisition in global industrial systems, directly addressing pain points such as high per-channel cost, signal crosstalk, surge vulnerability, and complex sensor powering.

It supports 8 independent channels configurable for 0–20mA or 4–20mA current inputs—fully compatible with standard industrial transmitters—and accepts both 2-wire sensors and 4-wire active current-output sensors, offering maximum field flexibility.

A key differentiator is its magnetic insulation between the internal backplane bus and field inputs, providing complete galvanic isolation to eliminate ground loops and ensure signal integrity over long cable runs. Each channel interfaces directly with active analog current-output sensors and features built-in TVS overvoltage protection, safeguarding against lightning strikes, motor switching transients, and grid fluctuations.

Proven in North American wind farm monitoring systems, Middle Eastern refinery DCS cabinets, and Southeast Asian smart water meter aggregation stations, the CT-3238 integrates seamlessly with major control platforms and complies with CE and industrial EMC standards. As a high-protection, high-density 8-channel 4-20mA input module, the CT-3238 delivers safe, accurate, and maintenance-free analog front-end performance for global automation projects.

Technical Parameters

General Parameters
Power	Max.43mA @ 5.0VDC
Isolation	I/O to internal bus: magnetic isolation (2.5KVrms Power isolation: DC-DC
Wiring	Max.: AWG 18;Min.: AWG 24
Installation	35mm DIN-Rail
Size	1151475mm
Weight	65g
Environmental parameters
Operating Temperature of Vertical Installation	-35℃~70℃
Operating Temperature of Horizontal Installation	-35℃~60℃
Relative Humidity	5~ 95%RH (No Condensation)
Storage Temperature	-40℃~85℃
Storage Humidity	5~ 95%RH (No Condensation)
Manufacturing Test Temperature	-40℃~75℃
Ingress Protection Rating	IP20
Vibration Resistance	Comply with IEC 61131-2 and EC 60068-2-6
Impact resistance	Comply with IEC 61131-2 and IEC 60068-2-27
EMC Performance	Comply with IEC 61131-2 and IEC 61000-4
Input Parameters
Channel Number	8 channels
LED Indicator	8 LED channel state indicators
Input range	Maximum: 0 ~ 23.5 mA
Resolution Ratio	15 Bit
Acquisition Precision	±0.3% full range, @25℃
	±0.5% full range, @-20~70℃
Sampling Rate	28 ms / 8 channels
Data Format	16-bit signed integer

Application scenarios:

FQA

Q：How many input channels does CT-3238 support?

A:：8-channel single-ended current input.

Q：What sensors can CT-3238 work with?

A:：Pressure sensors, current loop devices, transmitters.

Q：What is CT-3238 accuracy under industrial temperatures?

A：±0.3% @25℃, ±0.5% from -20~70℃.

Certifications & Quality Assurance:

ODOT Products comply with international industrial standards, including CE and RoHS, and undergo strict quality control to ensure long-term reliable operation in industrial environments.