Product Details
The Yokogawa CT5-TJ*A, also cataloged as the CT5-TJ Thermocouple Input Module, operates as a dedicated hardware component for converting low-level millivolt signals into digitized temperature data within Yokogawa CENTUM DCS networks. It executes high-precision signal conditioning for Type J thermocouple sensors over a dedicated process variable measurement circuit.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CT5-TJ*A (CT5-TJ Suffix A) |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.6 kg |
| Dimensions | 20 mm x 128 mm x 120 mm |
| Operating Temp | -10 to 60 deg C |
| Power Consumption | 24 VDC +/-10% |
| Input Type | Type J Thermocouple |
| Measurement Range | 0 to 180 deg C |
| Resolution | 0.1 deg C |
| Accuracy | +/-0.5 deg C typical |
| Data Rate | Up to 1 Mbps (industrial bus communication) |
| Storage Temp | -20 to 70 deg C |
Cold Junction Compensation (CJC) and Signal Conditioning
The CT5-TJ*A integrates internal cold junction compensation (CJC) circuitry to normalize ambient temperature drifts across millivolt input terminals during Type J thermocouple processing. Designed to maintain high measurement fidelity in DCS environments, the module incorporates channel-to-channel isolation and low-pass filtering to attenuate high-frequency noise and common-mode voltage interference. The conditioned process variable is serialized and transmitted over the internal backplane bus at communications rates up to 1 Mbps.
Frequently Asked Questions
Q: What power input tolerance is permitted for the CT5-TJ*A module?
A: The module operates on a nominal supply of 24 VDC with an allowable voltage input tolerance of +/-10%.
Q: What sensor types are compatible with the CT5-TJ*A input channels?
A: The module is hardware-calibrated specifically for Type J thermocouple inputs across a millivolt conversion range of 0 to 180 deg C.
Q: Does the CT5-TJ*A require external cold junction reference hardware?
A: No, the module includes internal cold junction compensation to compensate for local terminal block temperature variations automatically.
Field Installation Guidelines
- ESD Protection: Handle the module card using an anti-static wrist strap connected to cabinet ground prior to removing it from protective packaging.
- Cabinet Mounting: Slide the module assembly into the designated Yokogawa DCS I/O slot guide until the backplane connector fully seats, then tighten retaining screws.
- Thermocouple Wiring: Utilize extension-grade Type J thermocouple extension wire and maintain correct polarity connections at the terminal block.
- Shield Termination: Earth overall cable shielding at a single point on the enclosure instrument grounding bar to suppress electromagnetic interference.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Batch vs Continuous Processing in Industrial Automation: Architectural Strategies for Control Engineers
Selecting the proper control architecture remains a pivotal decision when designing industrial automation systems. Automation engineers must evaluate whether a batch or continuous process model best fits their production requirements. This fundamental choice influences PLC and DCS programming, hardware redundancy, sensor selection, and overall factory automation layouts.
Demystifying Signal Isolators: Operating Principles, Architectural Types, and Industrial Applications
Industrial automation systems rely on pristine analog signal transmission across complex control loops. Instrument technicians and system integrators frequently deploy signal isolators to maintain signal integrity between field sensors and control platforms. Eliminating electrical noise, ground loops, and high-voltage transients protects delicate PLC, DCS, and SCADA input channels from permanent damage.
Demystifying Industrial Control Systems: Comparing PLC, DCS, RTU, SCADA, and PAC
Modern factory automation relies on distinct control architectures to manage complex process environments efficiently. Control engineers often evaluate PLC, DCS, RTU, SCADA, and PAC platforms when designing industrial infrastructure. Understanding the functional boundaries of each technology ensures optimal system performance, high availability, and long-term cost efficiency.