Surface sensor testo 0628 7516 temperature probe, measurement range -50 to 80°C

Surface sensor testo 0628 7516 is a temperature probe designed for accurate surface measurements within a range of -50 to 80°C. The probe is intended to be connected to compatible testo measuring instruments to record surface temperatures on flat and slightly curved surfaces. It is suitable for applications where direct contact measurement of surfaces is required, providing quick and repeatable readings for HVAC inspections, equipment maintenance and quality control tasks.

Advantages

The probe offers a wide measurement range that covers deep sub-zero temperatures up to moderate heat levels, enabling use in refrigeration, ambient and warmer surface checks. Its contact design ensures direct heat transfer between the sensor element and the measured surface for rapid equilibration and consistent results. The sensor is compact and designed for field use, simplifying handling during routine inspections and maintenance operations. Compatibility with testo instruments allows immediate integration into existing measurement workflows and data logging systems.

Suitable for

• HVAC system inspections and duct or coil surface checks
• Refrigeration equipment temperature verification
• Routine maintenance of motors, pumps and heat exchangers
• Quality control of finished products requiring surface temperature monitoring
• Field diagnostic checks where contact surface measurement is preferred

Key specifications

• Measurement range: -50 to 80°C
• Sensor type: surface contact temperature probe
• Connection: compatible with testo measuring instruments
• Design: compact probe suitable for flat and slightly curved surfaces
• Response: designed for quick thermal equilibration for repeatable readings

How to use

Connect the surface probe to a compatible testo measuring instrument according to the instrument's connector and power instructions. Place the probe flat against the surface to be measured, ensuring good contact and minimizing air gaps. Allow the sensor to stabilize on the surface until the reading becomes steady; the stabilization time depends on the temperature difference and surface material. Record or log the measurement using the testo device interface and, if required, repeat measurements at additional points to verify uniformity across the surface.

Usage recommendations

For reliable results, ensure the measured surface is clean and dry and that the probe is held firmly in contact with the surface. Avoid using the probe on highly abrasive or corrosive surfaces without appropriate protection. When measuring very thin or poorly conducting materials, allow extra stabilization time and, if necessary, use a thermal paste or contact pad recommended by the instrument manufacturer to improve thermal transfer.