Product Introduction
The end face thermocouple operates based on the Seebeck effect, a fundamental principle in temperature sensing that generates a thermoelectric voltage when two dissimilar conductors are exposed to temperature differences. Its core sensing element is fabricated by winding specially treated thermoelectric wires, which are tightly attached to the front end of the thermometer. This unique structural design enables it to overcome the limitations of conventional axial thermocouples, as it can more accurately and rapidly reflect the actual temperature of the measured end face by minimizing heat loss and enhancing thermal contact efficiency.
In terms of core materials, the thermoelectric elements are made of high-purity alloy wires corresponding to different degree numbers (E/K type). These wires undergo rigorous surface treatment and annealing processes to ensure stable Seebeck coefficient and low signal drift. The protection tube is constructed from 1Cr18Ni9Ti stainless steel, a material renowned for its excellent corrosion resistance and temperature stability, which effectively isolates the sensing element from harmful industrial media. Compared with axial thermocouples, our end face thermocouple features a 37% reduction in interface thermal resistance (TCR) through optimized contact design, as verified by tests referencing the standards of the International Journal of Heat and Mass Transfer. This advantage makes it particularly suitable for measuring the end-face temperature of shaft bearings, gears, and other mechanical components where precise and real-time temperature monitoring is critical.
Technical Parameters
|
Model |
Thermocouple Grade |
Temperature Measurement Range (℃) |
Accuracy Class |
Thermal Response Time t0.5 (s) |
Protection Tube Material |
Protection Tube Diameter (mm) |
L (mm) |
Nominal Pressure |
|
WREM-201B |
E |
0-400 |
A/B |
<5 |
Stainless Steel 1Cr18Ni9Ti |
φ8-12 (Customizable) |
500, 1000, 1500, 2000, 2500 |
Atmospheric Pressure |
|
WRNM-201B |
K |
0-600 |
A/B |
<5 |
Stainless Steel 1Cr18Ni9Ti |
φ8-12 (Customizable) |
500, 1000, 1500, 2000, 2500 |
Atmospheric Pressure |
|
Custom Models |
J/T/N/S (Optional) |
-200~1000 (Optional) |
A/B |
<5 |
Stainless Steel/Inconel X-750 (Optional) |
φ2-20 (Customizable) |
10-5000 (Customizable) |
Customizable for Specific High-Pressure Scenarios |
Core Features
Superior Measurement Precision
Adopts Class A/B accuracy standards, with Class A error margin of ±1.5℃ for K-type and ±1.5℃ for E-type, meeting the requirements of high-precision industrial measurement.
Rapid Thermal Response
Thermal response time t0.5 <5s, which is 22% faster than conventional axial thermocouples, enabling real-time capture of end-face temperature changes.
Excellent Corrosion Resistance
Protection tube made of 1Cr18Ni9Ti stainless steel undergoes strict passivation treatment, withstanding 1000-hour salt spray test without rusting, suitable for harsh corrosive environments in petrochemical and marine industries.
Strict Production and Testing Processes
Implements 12-stage quality inspection, including raw material purity testing (nickel content deviation ≤±0.5%), thermoelectric wire welding quality inspection, and finished product calibration, with a pass rate of 100% for factory inspection.
Stable Contact Structure
Equipped with adaptive spring design, maintaining optimal contact pressure (8-12N/mm) to ensure stable thermal conductivity, reducing signal drift to ±0.3% within 500 thermal cycles (25-600℃).
Traceable Calibration Service
All products are calibrated by laboratories accredited to ISO/IEC 17025, providing calibration certificates with unique traceability codes for easy tracking of measurement accuracy traceability.
Application Fields
Power Industry
Used for measuring the end-face temperature of steam turbine shaft bearings, motor bearings, and generator components in thermal power plants and hydropower stations, ensuring safe operation of equipment.
01
Oil and Gas Industry
Applied in temperature monitoring of pump shafts, valve end faces, and pipeline flanges in oilfields and refineries, with corrosion-resistant design adapting to harsh media such as crude oil and natural gas.
02
Aerospace Industry
Used for temperature testing of engine components, aircraft landing gear parts, and aerospace equipment end faces, meeting strict requirements for high precision and high-temperature stability.
03
Metrology Institutes and Industrial Laboratories
Utilized as standard temperature measurement tools for calibration of other temperature sensors, relying on high accuracy and stable performance to ensure the reliability of measurement results.
04
Other Industries
Suitable for plastic extrusion machines, textile equipment, food processing machinery, and 3D printers for end-face temperature monitoring, providing data support for process optimization.
05
Why Choose Our End Face Thermocouple
Strict Quality Control System
Certified to ISO 9001 quality management system, implementing full-process quality control from raw material procurement to finished product delivery, with each product subject to 3 rounds of repeated calibration to ensure consistent performance.
High-Quality Material Selection
Thermoelectric elements use high-purity alloy wires (nickel content deviation ≤±0.5%) sourced from well-known international suppliers, and protection tubes adopt 1Cr18Ni9Ti or Inconel X-750 materials to avoid performance degradation caused by material defects.
Traceable Calibration Service
Cooperates with authoritative metrology institutions to provide calibration certificates that are recognized globally, ensuring that the product's measurement accuracy is traceable to international standards.
High-Pressure Adaptability
Customizable high-pressure resistant models (up to 10MPa) for special industrial scenarios, with protection tube structure optimized through finite element analysis to ensure safe operation under high-pressure conditions.
Strong Customization Capabilities
Supports customization of thermocouple grade, temperature measurement range, protection tube size, thread specification, and cable length (0.05-1000m) to meet the unique needs of different application scenarios.
Efficient Delivery Speed
Conventional models have a stock of 5000+ units, with delivery time of 3-5 working days; customized orders are completed within 7-15 working days, ensuring that customers' production schedules are not delayed.
FAQ
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