Process Control & Monitoring Solution – ODOT CT-3238 | 8-Channel Analog Input Module
Where This Product Is Used
The ODOT CT-3238 is an 8-channel analog input module engineered for demanding industrial environments where precise signal acquisition is critical. Typical deployment scenarios include:
- Chemical & Petrochemical Plants – Continuous monitoring of pressure transmitters, flow meters, and temperature sensors across multi-loop control systems.
- Water & Wastewater Treatment – Real-time acquisition of pH, dissolved oxygen, turbidity, and level signals from field instruments.
- Food & Beverage Processing – Hygienic process lines requiring simultaneous analog data collection from multiple CIP/SIP sensors.
- Power Generation & Utilities – Substation and generator monitoring where 4–20 mA loop integrity is non-negotiable.
- Building Automation (BAS/BMS) – HVAC control panels integrating temperature, humidity, and CO₂ sensor inputs.
- Discrete Manufacturing & Assembly Lines – Machine condition monitoring via vibration, force, and torque transducers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | CT-3238 |
| Brand | ODOT |
| Series | CT-3000 Analog I/O Series |
| Number of Channels | 8 (differential or single-ended) |
| Input Signal Types | 4–20 mA, 0–20 mA, 0–10 V, ±10 V (configurable per channel) |
| Resolution | 16-bit ADC |
| Accuracy | ±0.1% full scale |
| Isolation | Channel-to-channel & channel-to-bus optical isolation |
| Scan Cycle | <1 ms per channel |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5–95% RH, non-condensing |
| Power Consumption | ≤3 W @ 24 VDC |
| Bus Interface | ODOT CT-Bus (proprietary backplane) |
| Protection Rating | IP20 |
| Weight | 750 g |
| Certifications | CE, RoHS |
| Country of Origin | China |
Why Engineers Specify This Model
- High-Density Signal Acquisition – 8 isolated channels in a single slim module reduces panel footprint and wiring complexity versus discrete signal conditioners.
- Universal Input Flexibility – Per-channel software configuration between current and voltage modes eliminates the need for separate module SKUs across projects.
- 16-Bit Resolution – Delivers 65,536 counts of measurement granularity, meeting the accuracy demands of precision dosing, weighing, and flow control applications.
- Optical Isolation – Protects the CPU and backplane from ground loops and transient surges common in industrial field wiring.
- Seamless ODOT Ecosystem Integration – Plug-and-play compatibility with ODOT CT-series CPUs, power supplies, and communication gateways (Modbus RTU/TCP, EtherNet/IP, PROFIBUS).
- DIN Rail Mounting – Standard 35 mm DIN rail installation compatible with existing panel layouts.
Complete System Bill of Materials
For a fully operational ODOT CT-series analog input node, engineers typically specify:
- ODOT CT-3238 – 8-Channel Analog Input Module (this item)
- ODOT CT-1000 Series CPU Module
- ODOT CT-2000 Series Power Supply Module (24 VDC)
- ODOT CT-Bus Backplane / Rack (4-slot or 8-slot)
- ODOT CT-4000 Series Communication Gateway (Modbus TCP / EtherNet/IP)
- Field terminal blocks and shielded twisted-pair cable (per channel)
Contact Konmask.com for complete system quotations and BOM verification.
Compliance & Industry Standards
- CE Marking – Compliant with EU Low Voltage Directive (LVD) and EMC Directive.
- RoHS – Free from restricted hazardous substances per EU Directive 2011/65/EU.
- IEC 61131-2 – Programmable controller hardware requirements.
- IEC 61000-4 – EMC immunity standards for industrial environments.
Quality Assurance & Sourcing
Every ODOT CT-3238 unit supplied by Konmask.com is:
- Sourced directly from authorized ODOT distribution channels.
- Inspected upon receipt for physical integrity, label authenticity, and firmware version.
- Stored in ESD-safe, climate-controlled warehousing.
- Shipped with original manufacturer packaging, datasheet, and certificate of conformance where available.
We do not supply grey-market, refurbished, or counterfeit components. All units carry the original ODOT manufacturer warranty.
How to Source This Part
- Add to Cart – Click Add to Cart and proceed to checkout for immediate online purchase.
- Request a Quote – For volume orders (5+ units) or project BOM quotations, email support@konmask.com with your quantity and delivery requirements.
- Lead Time – In-stock units ship within 1–3 business days. Out-of-stock lead time is typically 2–4 weeks from ODOT factory.
- Export & Cross-Border – We support international shipping with full commercial invoice and packing list documentation for customs clearance.
Application-Specific FAQ
Q: Can the CT-3238 accept thermocouple or RTD inputs directly?
A: No. The CT-3238 is designed for standard analog voltage/current signals. For thermocouple or RTD inputs, specify the ODOT CT-3200 series temperature input modules.
Q: Is channel-to-channel isolation provided?
A: Yes. Each channel features individual optical isolation, preventing ground loop interference between field devices on different circuits.
Q: What is the maximum cable length for 4–20 mA loops?
A: With shielded twisted-pair cable and proper grounding, loop lengths up to 300 m are typical. Actual distance depends on cable gauge and field conditions.
Q: Is the CT-3238 compatible with third-party PLCs via gateway?
A: Yes. When paired with an ODOT CT-4000 communication gateway, the module’s data is accessible via Modbus TCP, EtherNet/IP, or PROFIBUS DP to any compatible host PLC or SCADA system.
Q: Can I mix analog input and output modules on the same backplane?
A: Yes. The ODOT CT-Bus backplane supports mixed I/O module configurations within the same rack.
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