Spring-type Standard M12*1.5 High-temperature Copper Thermocouple Injection Molding Machines K/E/PT Type Temperature Sensor

Product Introduction

Product Overview & Core Design Purpose

The Spring-type Standard M12*1.5 High-temperature Copper Thermocouple is a dedicated precision temperature sensor professionally developed for injection molding machines, extruders, hot runners, and heating barrels. It adopts a spring-loaded compression structure, standard M12×1.5 threaded mounting, and high-temperature-resistant pure copper head, ensuring close and stable contact with the measured surface for accurate and fast temperature sensing. This sensor supports K, E, and PT types to match different temperature control systems, making it the preferred matching component for industrial temperature controllers and solid-state relays.
Suosite Electrical, with over 10 years of expertise in temperature sensors and control instruments, has engineered this thermocouple for high stability, vibration resistance, and long service life in harsh, high-temperature industrial environments. Its standardized design enables easy installation, replacement, and universal compatibility with most injection molding equipment worldwide. Whether for new machine assembly, daily maintenance, or equipment retrofitting, this spring-type thermocouple provides reliable, real-time temperature feedback to ensure stable barrel and mold temperatures, improve product quality, and reduce production failures.

Key Product Features

This spring-type thermocouple is equipped with robust, application‑tailored features to ensure stable operation in harsh injection molding conditions.
First, it uses a standard M12×1.5 threaded mounting for fast, firm installation and universal compatibility with most injection molding machine barrels and hot runners.
Second, the spring-loaded compression structure automatically compensates for thermal expansion, maintaining close contact with the heating surface to ensure accurate, consistent readings even under long-term high temperatures and vibration.
Third, the high-conductivity pure copper sensing head offers fast thermal response, high-temperature resistance, oxidation resistance, and long-term durability.
Fourth, it supports multiple sensing types including K, E, and PT (PT100), covering a wide temperature range and matching most temperature controllers.
Fifth, the cable uses high-temperature braided wire with strong heat resistance, tensile strength, and aging resistance, suitable for long-term use in high-temperature workshops.
Sixth, it features excellent anti-vibration and anti-pull performance, ensuring stable signal transmission under frequent mechanical movements.
Seventh, its compact and rugged structure saves installation space and adapts to narrow spaces inside equipment.
Finally, it supports customized cable lengths and junction box styles to meet diverse on-site requirements.

Technical Advantages & Stability Performance

Backed by Suosite Electrical’s strong R&D and strict quality control, this spring-type thermocouple delivers outstanding technical advantages and long-term reliability.
The core uses high-purity thermocouple wire with low drift, high accuracy, and stable signal output, ensuring measurement error within ±0.5% – meeting strict requirements for injection molding temperature control.
The spring compression design eliminates measurement errors caused by loose contact or thermal deformation, greatly improving stability compared with conventional sensors.
High-quality copper and high-temperature materials enable the sensor to work continuously at 0–450°C while maintaining mechanical strength and electrical performance.
The wire features multi-layer insulation and shielding to resist electromagnetic interference from motors, inverters, and heaters, ensuring stable signal transmission.
Every sensor undergoes 100% temperature calibration, vibration testing, and aging testing before shipment, ensuring consistent performance.
With a long service life and low failure rate, it reduces replacement frequency and maintenance downtime, helping enterprises improve production efficiency.

Technical Parameters & Specifications

To support engineers, purchasers, and maintenance teams in accurate selection, this thermocouple provides complete and clear technical specifications.
Model: Spring-type standard M12×1.5 high-temperature copper thermocouple
Thread specification: M12×1.5 (universal standard for injection molding machines)
Structure: Spring-loaded compression type
Sensing type: K type / E type / PT type (PT100 optional)
Temperature range: 0°C to 450°C (continuous operation)
Accuracy: ±0.5% FS (industrial high precision)
Response time: <1 second (fast thermal induction)
Probe material: High-purity pure copper, high temperature resistance
Cable: High-temperature braided cable, customizable length
Insulation: High-temperature resistant insulation material
Application: Injection molding machines, extruders, hot runners, heating barrels
Certifications: CE compliant, RoHS, industrial safety standards
These specifications ensure high compatibility and interchangeability for global injection molding equipment.

Industry Applications & Practical Cases

This spring-type thermocouple is widely used in many fields requiring stable, high-precision temperature measurement, with outstanding performance in injection molding and plastic processing.
In injection molding machines, it is installed on heating barrels and molds to provide real-time temperature feedback, ensuring stable melting temperature, improving product gloss, reducing defects, and increasing yield. Many injection molding factories have reduced scrap rates by more than 12% after using these sensors.
In plastic extruders and granulation equipment, it monitors barrel temperature to ensure stable material plasticization and consistent output.
In hot runner systems, its fast response and spring compression structure maintain uniform temperature distribution, improving molding quality.
In packaging and blowing machinery, it provides stable temperature signals for heating elements, ensuring stable production.
It is also widely used in rubber machinery, die-casting machines, cable equipment, and other heating equipment as a high-performance temperature sensing component.
A large number of practical cases show that this sensor significantly reduces equipment failures, lowers maintenance costs, and improves production stability.

Commercial Value & Supply Chain Support

Choosing this spring-type thermocouple brings significant commercial value and reliable supply support to equipment manufacturers, system integrators, distributors, and end users.
High-precision temperature measurement improves product qualification rate, reduces material waste, saves energy, and lowers production costs.
Standardized structure and easy replacement reduce maintenance time and labor costs.
Long service life and high stability reduce replacement frequency and after-sales pressure.
For injection molding machine manufacturers, using high-quality matching sensors improves equipment performance, enhances brand reputation, and helps expand global markets.
Suosite Electrical provides strong supply chain support: mature production lines, sufficient inventory, and fast delivery, with most standard models shipped within 48 hours.
The company supports ODM/OEM customization, including cable length, connector type, logo, and packaging, to meet diverse project needs.
With a professional technical team, Suosite Electrical provides full-life-cycle services including selection guidance, installation suggestions, and after-sales support.
As a national high-tech enterprise with CE certification and multiple patents, Suosite Electrical continues to invest in R&D and quality control, providing stable, reliable, and high-precision temperature sensing solutions for global industrial customers.