WPTC Weld Pad Surface Temperature Thermocouple Probe

The WPTC Weld Pad Surface Temperature Thermocouple Probe is a rugged, high-performance solution designed for accurate surface temperature measurement in demanding industrial and testing environments. Featuring a flexible stainless steel weld pad and a mineral insulated thermocouple probe, this sensor provides fast response and reliable performance when securely attached to flat or curved surfaces.

Engineered for versatility, the WPTC can be installed using welding, brazing, cementing, or clamping, making it a practical and adaptable solution for a wide range of applications. Built with high-quality materials and proudly made in the USA, this probe is designed to deliver consistent, repeatable temperature measurements in even the most challenging conditions.

Designed for Surface Temperature Measurement

Unlike immersion or insertion-style thermocouples, the WPTC is specifically designed to measure surface temperatures directly. Its low-profile weld pad allows it to be mounted securely to the surface of a component, ensuring accurate thermal contact and minimal measurement lag.

This makes it ideal for monitoring:

• Pipe and tubing surface temperatures

• Heat exchangers and process equipment

• Industrial machinery and housings

• Furnaces, ovens, and heated surfaces

• Research and development test setups

By attaching directly to the surface, the WPTC provides reliable temperature data without requiring invasive installation methods.

Flexible Stainless Steel Weld Pad

A key feature of the WPTC thermocouple is its flexible stainless steel weld pad, designed to conform to both flat and curved surfaces.

• Pad dimensions: 1.0" x 1.0" (25 mm x 25 mm)

• Pad thickness: 0.010" (0.25 mm)

This flexibility allows the pad to form tightly against the measured surface, improving thermal contact and measurement accuracy.

The pad can be attached using several methods, including:

• Welding

• Brazing

• Cementing

• Mechanical clamping

This versatility makes it suitable for both permanent installations and temporary testing setups.

Fast Response for Dynamic Measurements

The WPTC is engineered for fast thermal response, enabling it to quickly track changes in surface temperature.

• Typical response time: approximately 300 milliseconds (time constant)

This rapid response allows the sensor to reach 63.2% of a temperature change in a fraction of a second, making it ideal for applications where temperature fluctuations need to be monitored in real time.

Wide Temperature Measurement Range

The WPTC thermocouple probe supports a broad temperature range:

• -148°F to 2192°F (-100°C to 1200°C)

This wide operating range allows it to be used in both moderate and high-temperature applications, from general industrial processes to extreme heat environments such as furnaces and exhaust systems.

Special Limits of Error Accuracy

Manufactured using Special Limits of Error (SLE) materials, the WPTC provides enhanced measurement accuracy compared to standard thermocouples.

• Accuracy: Greater of ±0.4% of reading or ±1.1°C

This level of precision ensures reliable and repeatable temperature data, making the probe suitable for applications where accuracy is critical.

Mineral Insulated (MgO) Probe Construction

The WPTC features a mineral insulated (MgO) thermocouple probe, providing:

• High dielectric strength

• Excellent thermal conductivity

• Resistance to vibration and mechanical stress

• Long-term durability

The probe uses an Inconel sheath with a diameter of 0.062 inches, offering superior resistance to high temperatures, oxidation, and corrosion.

• Sheath rating: up to 2550°F (1400°C)

This robust construction ensures reliable performance in harsh industrial environments.

Ungrounded Junction for Stability

The WPTC utilizes an ungrounded sensing junction, which provides electrical isolation from the mounting surface.

Benefits of an ungrounded junction include:

• Reduced electrical noise

• Improved signal stability

• Better compatibility with sensitive measurement systems

This design is particularly advantageous in environments with electrical interference or where measurement accuracy is critical.

Durable Lead Wire Construction

The probe is equipped with a stainless steel over-braided lead wire over Teflon-insulated conductors, providing both durability and flexibility.

Key features include:

• 24 AWG stranded conductors

• Resistance to abrasion and mechanical wear

• Protection against environmental exposure

• Temperature rating up to 400°F (204°C) for the cable

This rugged cable design ensures reliable signal transmission while allowing easy routing in complex installations.

Customizable Configurations

The WPTC series offers a variety of configuration options to meet specific application requirements.

Available options include:

Thermocouple Types

• Type J

• Type K

• Type T

Cable Lengths

• 72 inches

• 144 inches

• 300 inches

MgO Probe Lengths

• Custom lengths available

Termination Options

• Bare leads

• Mini plug

• Standard plug

Custom configurations are available to meet unique application needs.

Built for Industrial and R&D Applications

The WPTC is designed for use in both industrial and research environments, offering a combination of durability, accuracy, and flexibility.

Typical applications include:

• Industrial process monitoring

• Heat treatment and thermal processing

• HVAC and energy systems

• Laboratory and R&D testing

• Equipment diagnostics and maintenance

Its ability to provide accurate surface temperature measurement in a wide range of conditions makes it a valuable tool across industries.

Made in the USA Quality

The WPTC Weld Pad Thermocouple is proudly manufactured in the USA, ensuring high standards of quality, consistency, and performance.

Why Choose the WPTC Weld Pad Thermocouple?

The WPTC stands out as a reliable and versatile surface temperature sensor due to its:

• Fast response time for dynamic measurements

• Flexible stainless steel weld pad for improved surface contact

• Multiple mounting options (weld, braze, clamp, cement)

• Wide temperature measurement range

• Special Limits of Error accuracy

• Durable MgO mineral insulated construction

• Inconel sheath for high-temperature performance

• Ungrounded junction for stable signal output

• Flexible configuration options

A Reliable Solution for Surface Temperature Measurement

Accurate surface temperature measurement is essential for monitoring system performance, ensuring safety, and optimizing processes. The WPTC Weld Pad Surface Temperature Thermocouple Probe provides a fast, flexible, and durable solution for capturing reliable temperature data in demanding environments.

Whether used in industrial applications or research settings, the WPTC delivers the performance and reliability needed to support critical measurement tasks.

Optimize Your Temperature Measurement Setup

From high-temperature industrial processes to precision testing environments, the WPTC thermocouple probe offers the durability, accuracy, and ease of installation required for effective surface temperature measurement.

Contact us today for more information, volume pricing, or custom configurations tailored to your application.