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TC23- Melt Bolt Style Thermocouple with Lead Wire and Connector

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Secure Threaded Mount

TC23- Melt Bolt Style Thermocouple with Lead Wire and Connector

Threaded Melt Bolt Thermocouple for Accurate Industrial Temperature Measurement

the TC23 Melt Bolt Style Thermocouple is designed for accurate and dependable temperature measurement in applications where secure threaded mounting and reliable thermal contact are essential. Its integrated bolt-style design positions the sensing tip directly within the process, making it well suited for monitoring melt temperature, heated tooling, industrial machinery, and high-vibration equipment. Built with rugged **MgO mineral insulated construction**, the TC23 is available in **Type J and Type K**, with grounded, ungrounded, or exposed junctions, multiple bolt lengths, lead wire options, connectors, and custom configurations to meet OEM and industrial process requirements while complying with **ASTM E608, IEC 60584, and ANSI MC96.1** standards.

Secure Threaded Mount

Integrated bolt design provides secure mounting and reliable thermal contact for accurate process and surface temperature measurement.

Rugged MgO Construction

Mineral insulated cable withstands vibration, thermal cycling, mechanical stress, and demanding industrial operating environments.

Fast Thermal Response

Available with exposed, grounded, or ungrounded junctions to balance response time, durability, and electrical isolation.

Multiple Connector

Choose standard, miniature, high-temperature, or ultra-high-temperature connectors for quick installation and reliable electrical connections.

Reliable Process Measurement

Direct metal contact delivers stable, repeatable temperature readings for melt, tooling, machinery, and industrial process applications.

Custom Configuration

Configure thermocouple type, bolt length, probe diameter, lead wire, connector, and junction style for your application.

Download Datasheet

Quick Specifications

Sensor Type Type J or Type K
Mounting Style Integrated Threaded Melt Bolt
Junction Type Grounded, Ungrounded, or Exposed
Probe Construction MgO Mineral Insulated
Sheath Material 316 Stainless Steel
Bolt Thread 1/2-20 UNF
Ideal for
Plastic Injection Molding
Plastic Extrusion
Blow Molding
Hot Melt Adhesive
Heated Dies & Tooling
Process Heating
Rubber
OEM Machinery
The TC23 Melt Bolt Style Thermocouple is designed for accurate and dependable temperature measurement in applications where the sensing element must be securely mounted directly into equipment or process components. Through integrating the thermocouple into a threaded bolt, the sensor maintains reliable contact with the measured surface, helping improve measurement stability while simplifying installation and replacement. This design is commonly used for monitoring melt temperatures, heated tooling, industrial machinery, and high-vibration equipment where consistent temperature feedback is essential.
Built with MgO (mineral insulated) construction, the TC23 provides excellent resistance to vibration, thermal cycling, and demanding industrial environments. The compact mineral insulated sensing tip offers fast heat transfer while protecting the thermocouple wires from mechanical damage. Customers can choose grounded, ungrounded, or exposed junctions depending on the required response time, electrical isolation, and process conditions. Grounded junctions provide rugged construction, ungrounded junctions reduce electrical interference, and exposed junctions deliver the fastest thermal response for applications where fast temperature changes must be detected.
The TC23 is available in Type J and Type K thermocouples with multiple probe diameters, immersion lengths, bolt lengths, lead wire configurations, insulation materials, connectors, and optional accessories to meet OEM and replacement requirements. Standard 316 stainless steel sheath construction provides excellent durability and corrosion resistance for industrial process applications. Calibration is available upon request, and all sensors are manufactured to ASTM E608, with temperature tolerances available to IEC 60584 and ANSI MC96.1 standards.
Whether installed on extrusion equipment, plastic processing machinery, heated dies, industrial process equipment, or other temperature-critical systems, the TC23 delivers reliable surface and process temperature measurement while offering the flexibility to configure the sensor for specific operating conditions. Its rugged construction, customizable design, and secure bolt-mounted installation make it an ideal pick for engineers looking for long-term performance and dependable temperature monitoring in demanding industrial environments.

Product Specifications

Review the standard specifications and available configuration options for the TC23 Thermocouple. Sheath diameter, insertion length, thermocouple type, lead wire, insulation, connector style, temperature rating, and optional features may vary depending on the selected configuration and application requirements

Sensor TypeType J or Type K
Mounting StyleIntegrated Threaded Melt Bolt
Junction TypeGrounded, Ungrounded, or Exposed
Probe ConstructionMgO Mineral Insulated
Sheath Material316 Stainless Steel
Bolt Thread1/2-20 UNF
Bolt Length3", 6", 9", 12", or Custom
Lead Wire OptionsPTFE, High-Temperature PTFE, Fiberglass, SS Armor
Termination OptionsBare Ends, Standard, Miniature, High-Temperature & Ultra-High-Temperature Connectors
Standards & CalibrationASTM E608/E608M, NIST ,ISO 17025

Spare Parts & Accessories

Complete your installation with compatible mounting accessories, connectors, and replacement components for the TC23 Immersion Thermocouple.

Product Videos

Watch product overview, installation, and application videos for the TC23 Thermocouple

Temperature Transmitter | Tempotech Controls Inc

PT2M44S

A temperature transmitter takes the temperature data from a sensor, like an RTD or thermocouple, and converts it into a standard signal, usually 4-20mA or 0-10V. This signal can be sent to control systems, PLCs, or monitoring equipment to keep track of temperature in real-time.

Read transcript

Video Transcription: Temperature Transmitter Technology & Application
[00:05] A temperature transmitter is a critical component in industrial automation that converts low-level sensor signals into standardized outputs. This ensures accurate, reliable, and long-distance signal transmission for complex control systems.

[00:14] Thermocouple and RTD sensors are the industry standards for measuring the temperature of processed media. However, in challenging environments—characterized by high temperatures, electromagnetic interference (EMI), or long cable runs—the raw signals from these sensors can degrade.

[00:33] This signal degradation, often caused by wire resistance and electrical noise, can lead to inaccurate readings. To mitigate these issues, temperature transmitters are used to amplify, condition, and convert sensor data into a standardized 4-20mA output, ensuring high-integrity data across the plant.

[00:59] Several signal types are used depending on the application:

4 to 20 mA Analog Signal: The most common standard, highly resistant to noise and ideal for long distances.

0 to 10V: A common analog option, though more susceptible to signal loss over length.

Digital Signals (HART & Modbus): Used for advanced remote communication and diagnostics.

RS485/RS232: Essential for integrating transmitters with PLCs and SCADA systems.

[01:35] The Tempotech TT367 series temperature transmitters are engineered for versatility. They offer precise sensor-transmitter matching and robust protection against interference. Configurable via the HART protocol, these units allow for easy setup and reliable field operation.

[01:56] Key reliability features include open/short-circuit detection, incorrect wiring alerts, and NAMUR NE43 failure standards. The TT367 supports RTD, TC, Ohm, and Millivolt inputs, making it a universal solution for your instrumentation needs.

[02:26] With integrated dot-matrix displays and easy configuration options, our transmitters provide the precision you can trust. Contact our technical sales team today to find the best transmitter for your application.

Related Resources

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Frequently Asked Questions

Find answers to common questions about the TC23 Melt bot thermocouple

How should the immersion length be selected for accurate temperature measurement?+

The sensing tip should be positioned directly within the melt stream or the area where the process temperature is most representative. An incorrect immersion length can expose the sensor to cooler surrounding material or excessive heat conduction through the mounting bolt, reducing measurement accuracy. If the installation conditions are uncertain, Tempotech Controls can recommend the appropriate immersion length for your application

What factors should I consider when selecting a melt bolt thermocouple?+

When specifying a TC23, consider the thermocouple type (J or K), junction style, probe diameter, immersion length, bolt length, lead wire insulation, connector type, and process temperature. Selecting the proper configuration helps maximize measurement accuracy, response time, and sensor life while ensuring compatibility with your equipment and operating conditions.

Why is MgO mineral insulated construction recommended for industrial applications?+

The TC23 uses MgO mineral insulated construction to support the thermocouple conductors while protecting them from vibration, thermal cycling, and mechanical stress. This construction provides excellent durability, stable performance, and long service life in demanding industrial environments where conventional wire sensors may fail prematurely.

How do I choose between Type J and Type K thermocouples?+

The choice depends on your operating temperature and process environment. Type J is commonly selected for moderate-temperature industrial applications, while Type K is generally preferred for higher-temperature and oxidizing environments. Selecting the appropriate thermocouple type helps optimize measurement accuracy, sensor life, and process reliability.

Can the TC23 be manufactured to match existing OEM equipment?+

Yes. The TC23 can be customized with different thermocouple types, bolt lengths, immersion lengths, probe diameters, junction styles, lead wire lengths, insulation materials, and connector options to match OEM equipment or replacement sensor requirements.

Does Tempotech Controls provide calibration for the TC23?+

Yes. The TC23 is manufactured to ASTM E608/E608M with temperature tolerances meeting IEC 60584 and ANSI MC96.1 requirements. Calibration certificates are available upon request in accordance with ASTM E220 with NIST/ISO17025

Our mission is to provide an engineered custom solution for Temperature sensors with high quality, reliable products at a competitive price. We strive to deliver continuous growth and opportunity for employees, customers, and suppliers.

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