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Precision Thermocouple Compensating Cables Okazaki Manufacturing | Nichiboku Ltd
- Luis Alberto Fing
- Aug 13, 2025
- 2 min read
Welcome to Nichiboku's industrial Blog
Introduction
Thermocouple Compensating Cables Okazaki
In industrial environments where temperature accuracy is critical, the choice of compensating cables directly impacts performance and reliability. Okazaki Manufacturing, a leader in Japanese engineering, offers high-grade compensating cables designed for demanding applications across the chemical, power generation, refining, and steel industries. Discover how these precision cables ensure signal integrity and system stability, even in harsh conditions.
Advantages of Okazaki’s Compensating Cables
Okazaki’s compensating cables are engineered with a full in-house manufacturing system—from conductor core to insulation coating. Their reliability and precision make them the preferred choice for thermocouple extension across high-temperature operations.
Key Benefits:
Strict Quality Control: Manufactured entirely in-house for maximum quality assurance.
High Reliability: Ideal for applications requiring precise temperature control.
Versatile Usage: Trusted in chemical plants, nuclear and thermal power facilities, steelworks, and refineries.
Types and Tolerance Classes
Okazaki compensating cables comply with JIS C 1610 (IEC 60584‑3) and ASTM E230 standards. The following are key thermocouple types and their specifications:
Type | Applicable Temperature Range (°C) | Tolerance (Class 1) |
JX | –25 to +200 | ±1.1°C |
KX | –25 to +200 | ±2.2°C |
EX | –25 to +200 | ±1.7°C |
NX | –25 to +200 | ±1.5°C |
BC | 0 to +100 | ±2.2°C |
RCA/RCB | 0 to +100 | ±2.2°C |
SCA/SCB | 0 to +100 | ±2.2°C |
These tolerances ensure accurate temperature readings and control, which are vital for automated process systems.
Color Coding for Easy Identification
Each cable type is color-coded for clear differentiation of positive and negative conductors and the sheath. The system complies with international standards to reduce installation errors and enhance safety.
Example – Type JX (JIS Code):
Positive (+): Red
Negative (–): White
Sheath: Black
Other cable types feature standardized color codes as well, streamlining identification in complex systems.
Built on a Legacy of Innovation
Since beginning production in 1969, Okazaki has maintained a tradition of innovation. In 1972, they expanded their capabilities by incorporating mineral-insulated (MI) cable technology, reinforcing their leadership in high-performance cable solutions.
Others Okazaki Products (here)
Ready to Enhance Your Temperature Control Systems?
Request a quote today for Okazaki’s precision compensating cables.Contact our team for specifications tailored to your application.Schedule a consultation with Nichiboku Ltd’s experts.
Contact our team for specifications
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