Yokogawa CT5-TJ*A Thermocouple Input Module
The Yokogawa CT5-TJ*A, also cataloged as the CT5-TJ*A Thermocouple Input Module, operates as a dedicated hardware component for converting millivolt thermocouple signals into digitized temperature values within Yokogawa CENTUM control systems.
Suffix Breakdown & Model Matrix
- CT5-TJ*A
- TJ: Thermocouple sensor input class support (Type J, K, T thermocouple types)
- *A: Base module revision and terminal block execution variant
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CT5-TJ*A |
| Brand | Yokogawa |
| Origin | Unspecified |
| Weight | 200 g to 300 g |
| Dimensions | Standard CENTUM rack form factor |
| Operating Temp | -10 deg C to +55 deg C |
| Storage Temp | -25 deg C to +75 deg C |
| Power Consumption | Standard internal bus draw |
| Measurement Range | 0 deg C to 180 deg C |
| Signal Input Type | Millivolt thermocouple inputs |
| Cold Junction Compensation | Integrated electronic CJC circuit |
| Humidity Range | 5% to 95% RH non-condensing |
| Certifications | CE, UL, RoHS compliant |
Cold Junction Compensation and Channel Isolation
The module incorporates an onboard temperature sensor for real-time cold junction compensation (CJC), dynamically adjusting terminal reference junctions to eliminate measurement drift caused by ambient temperature shifts. Differential input stages provide channel isolation, minimizing common-mode voltage interference and electromagnetic noise pickup from industrial thermocouple wiring loops.
Frequently Asked Questions
Q: What thermocouple sensor types are supported by the CT5-TJ*A input circuitry?
A: The input channels accept millivolt signals from Type J, Type K, and Type T thermocouples, along with other standard thermoelectric pairings.
Q: How does the module handle ambient temperature variations at the terminal connection points?
A: The integrated cold junction compensation network tracks terminal block temperatures continuously, applying real-time software corrections to maintain conversion accuracy.
Field Installation Guidelines
- Mount the module securely onto the designated Yokogawa CENTUM base unit or rack slot, ensuring the physical guide pins engage correctly.
- Terminate thermocouple extension wires directly to the corresponding terminal blocks, maintaining correct polarity to prevent thermoelectric offset errors.
- Ensure cabinet environmental controls maintain ambient operating conditions within the -10 deg C to +55 deg C range with humidity levels between 5% and 95% RH.
Yokogawa CT5-TJ*A Thermocouple Input Module
Yokogawa CT5-TJ*A Thermocouple Input Module
The Yokogawa CT5-TJ*A, also cataloged as the CT5-TJ*A Thermocouple Input Module, operates as a dedicated hardware component for converting millivolt thermocouple signals into digitized temperature values within Yokogawa CENTUM control systems.
Suffix Breakdown & Model Matrix
- CT5-TJ*A
- TJ: Thermocouple sensor input class support (Type J, K, T thermocouple types)
- *A: Base module revision and terminal block execution variant
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CT5-TJ*A |
| Brand | Yokogawa |
| Origin | Unspecified |
| Weight | 200 g to 300 g |
| Dimensions | Standard CENTUM rack form factor |
| Operating Temp | -10 deg C to +55 deg C |
| Storage Temp | -25 deg C to +75 deg C |
| Power Consumption | Standard internal bus draw |
| Measurement Range | 0 deg C to 180 deg C |
| Signal Input Type | Millivolt thermocouple inputs |
| Cold Junction Compensation | Integrated electronic CJC circuit |
| Humidity Range | 5% to 95% RH non-condensing |
| Certifications | CE, UL, RoHS compliant |
Cold Junction Compensation and Channel Isolation
The module incorporates an onboard temperature sensor for real-time cold junction compensation (CJC), dynamically adjusting terminal reference junctions to eliminate measurement drift caused by ambient temperature shifts. Differential input stages provide channel isolation, minimizing common-mode voltage interference and electromagnetic noise pickup from industrial thermocouple wiring loops.
Frequently Asked Questions
Q: What thermocouple sensor types are supported by the CT5-TJ*A input circuitry?
A: The input channels accept millivolt signals from Type J, Type K, and Type T thermocouples, along with other standard thermoelectric pairings.
Q: How does the module handle ambient temperature variations at the terminal connection points?
A: The integrated cold junction compensation network tracks terminal block temperatures continuously, applying real-time software corrections to maintain conversion accuracy.
Field Installation Guidelines
- Mount the module securely onto the designated Yokogawa CENTUM base unit or rack slot, ensuring the physical guide pins engage correctly.
- Terminate thermocouple extension wires directly to the corresponding terminal blocks, maintaining correct polarity to prevent thermoelectric offset errors.
- Ensure cabinet environmental controls maintain ambient operating conditions within the -10 deg C to +55 deg C range with humidity levels between 5% and 95% RH.
