From Thermal Imaging to Quantitative Temperature Measurement

Traditional thermal imaging systems primarily allow users to visualize differences in infrared radiation and identify areas that are hotter or colder than their surroundings.

For many applications, however, visualizing thermal differences is only the first step.

Industrial inspection, equipment monitoring, fire detection, and intelligent sensing systems may also require actual temperature information.

The ERUSTM64-9 thermal imaging module addresses this requirement by combining infrared imaging with multiple temperature measurement functions.

The module supports:

• Spot temperature measurement
• Area temperature measurement
• Isotherm detection
• Full-screen temperature measurement
• Full temperature matrix output

These functions allow system developers to use the ERUSTM64-9 not only as an infrared camera core, but also as a thermal sensing component capable of providing quantitative temperature information.

What Does the “S” in ERUSTM64-9 Mean?

For customers already familiar with ERDI’s ERUTM64-9, the new model name provides a simple way to understand the product upgrade.

ERUSTM64-9 = ERUTM64-9 + Temperature Measurement

The additional “S” represents the enhanced temperature measurement capability of the new model.

While the ERUTM64-9 focuses on infrared thermal imaging, the ERUSTM64-9 extends this platform with quantitative temperature measurement functions.

This allows users to move from simply asking:

“Where is the heat?”

to also asking:

“What is the temperature?”

The result is a more capable infrared sensing platform for applications where thermal images and temperature data need to work together.

640×512 High-Resolution Uncooled Thermal Imaging

At the core of the ERUSTM64-9 is a 640×512 VOx uncooled infrared detector with a 12 μm pixel pitch.

The detector operates in the 8–14 μm spectral response band and provides a NETD of ≤40 mK at F1.0 and 25°C, according to the product specifications.

With a 30 Hz frame rate, the module provides responsive thermal image output for real-time observation and system integration.

The 640×512 resolution provides 327,680 thermal pixels, making the module suitable for applications where developers need more detailed thermal information than lower-resolution infrared sensors can provide.

9.1 mm F1.0 Lens with a 48.3° × 38.7° Field of View

The ERUSTM64-9 is equipped with a 9.1 mm focal-length infrared lens with an F1.0 aperture.

The optical system provides a 48.3° × 38.7° field of view, offering a relatively wide thermal observation area while maintaining a compact module design.

The F1.0 optical configuration also provides efficient infrared energy transmission to the detector, supporting the module’s overall thermal imaging performance.

This configuration makes the ERUSTM64-9 suitable for compact thermal imaging systems where both field of view and module size are important considerations.

Multiple Temperature Measurement Functions

One of the most important differences between the ERUSTM64-9 and conventional thermal imaging modules is its range of temperature measurement functions.

Spot Temperature Measurement

The ERUSTM64-9 supports spot temperature measurement, allowing a system to obtain the temperature of a specific point within the thermal image.

This function can be useful for monitoring a particular component, surface, hot spot, or target area.

Area Temperature Measurement

The module also supports arbitrary-area temperature measurement.

Within a selected area, the system can output:

• Maximum temperature
• Minimum temperature
• Average temperature

This provides more comprehensive information than measuring a single point and can be useful for industrial inspection and thermal distribution analysis.

Isotherm Detection

The ERUSTM64-9 supports isotherm functionality, allowing regions with similar temperature characteristics to be identified.

This can provide useful thermal information for applications involving temperature range identification and thermal anomaly analysis.

Full Temperature Matrix Output

For applications requiring more detailed thermal data, the module supports full temperature matrix output.

Instead of obtaining temperature information from only a single point or selected area, system developers can access temperature information across the complete thermal image.

This capability can provide a foundation for application-specific algorithms, thermal data analysis, and advanced temperature monitoring systems.

Two Temperature Measurement Ranges

The ERUSTM64-9 supports two specified temperature measurement ranges:

-20°C to 150°C

and

0°C to 550°C

The specified temperature measurement accuracy is ±2°C or ±2%, with a specified measuring distance of 5 meters.

This dual-range configuration allows the module to address both relatively low-temperature monitoring and higher-temperature measurement applications.

Actual temperature measurement performance may depend on application conditions, including target characteristics, emissivity, measuring distance, and environmental conditions. System-level calibration may therefore be appropriate for applications requiring highly controlled measurement performance.

Compact 21 × 21 mm Thermal Imaging Module

Thermal imaging systems are often required to operate under strict size and weight limitations, particularly in UAV payloads, robotics, portable equipment, and embedded vision systems.

The ERUSTM64-9 has external dimensions of only:

21 mm × 21 mm × 29.47 mm

and weighs just:

22.1 g.

This compact design allows the module to be integrated into equipment where installation space and payload weight are important considerations.

The module also features a Type-C digital video interface, providing a practical interface for integration with host systems and embedded platforms.

Designed for OEM Thermal Imaging System Integration

The ERUSTM64-9 is designed not only as a standalone thermal camera component, but also as an OEM infrared sensing module for integration into larger systems.

System developers can combine the module’s thermal image output and temperature data with their own processors, software, algorithms, displays, and control systems.

This architecture can help manufacturers develop application-specific thermal imaging equipment without having to develop the infrared sensing core from the ground up.

Potential application areas include:

UAV Thermal Imaging

The compact and lightweight design makes the ERUSTM64-9 suitable for UAV thermal imaging payloads where both thermal observation and temperature measurement are required.

Industrial Inspection

Temperature measurement can provide additional information for identifying abnormal heat, thermal differences, and potential equipment problems.

Robotics Vision

The module can provide robots with thermal information that complements conventional visible-light imaging.

Fire Detection

Thermal imaging and temperature measurement can help identify high-temperature areas and provide additional information for fire detection systems.

Security & Surveillance

Long-wave infrared imaging can provide thermal information in low-light and nighttime environments.

Search & Rescue

Thermal imaging can provide additional thermal information in challenging lighting conditions and support target detection.

The ERUSTM64-9 can also be considered for other customized infrared sensing applications depending on system requirements.

ERUSTM64-9 Technical Specifications

The specifications above are based on the ERUSTM64-9 product documentation provided by ERDI.

ERUSTM64-9 vs. ERUTM64-9

The introduction of ERUSTM64-9 expands ERDI’s existing 640×512 thermal imaging product offering.

The key difference is the addition of temperature measurement capabilities.

For customers who already use or are familiar with the ERUTM64-9, the ERUSTM64-9 provides a straightforward path toward applications that require additional temperature measurement capabilities.

A Compact Thermal Sensing Platform for Next-Generation Applications

The development of thermal imaging technology is moving beyond simple image visualization.

As thermal cameras become increasingly integrated into UAVs, robots, industrial equipment, intelligent inspection systems, and embedded vision platforms, the ability to obtain quantitative temperature information is becoming increasingly valuable.

The ERUSTM64-9 combines:

640×512 High-Resolution Thermal Imaging

Multi-Function Temperature Measurement

Compact 21 × 21 × 29.47 mm Design

22.1 g Lightweight Construction

Type-C Digital Interface

into a compact infrared sensing module.

With this new product, ERDI aims to provide OEM manufacturers and system integrators with a flexible thermal imaging platform that can see heat, measure temperature, and support the development of intelligent infrared applications.

Ready to Add Temperature Measurement to Your Thermal Imaging System?

If your project requires a 640×512 thermal imaging module with temperature measurement, ERUSTM64-9 provides a compact solution combining high-resolution infrared imaging and quantitative temperature sensing.

ERDI can also provide technical support and customization according to different application requirements. The product documentation states that customization and system training can be provided for users’ technical staff and operators.

Contact ERDI to discuss your thermal imaging application, integration requirements, and project specifications.