Digital Hot Wire Probe with Temperature Sensor

Overview

The digital hot wire probe (Ø 7.5 mm) with integrated temperature sensor is engineered for accurate measurement of air velocity and temperature in ventilation ducts and outlets. Featuring an extendable telescope and a compact probe head, it is ideal for precise flow measurements, even in tight or difficult-to-reach spaces.

This high-precision thermal anemometer is designed to measure flow velocity and temperature in HVAC systems, covering a measurement range of 0 to +20 m/s. It is perfectly suited for evaluating low to medium airflows in ventilation ducts, grilles, and plate outlets, ensuring comprehensive system diagnostics.

Thanks to its integrated temperature sensor and absolute pressure compensation, the probe provides reliable and accurate readings. Its slim 7.5 mm diameter probe head allows for insertion into small duct openings, while the extendable telescope (up to 820 mm) simplifies access to deep measurement points. The intelligent digital calibration processes data directly within the probe, reducing system error and enabling independent calibration.

Why It Matters

Accurate air velocity and temperature measurements are critical for optimizing HVAC system performance, ensuring energy efficiency, and maintaining occupant comfort. This Testo probe delivers precise data in challenging environments, allowing tradies to diagnose issues effectively and maintain optimal indoor air quality.

What's Included

• Digital Hot Wire Probe (Ø 7.5 mm)
• Integrated Temperature Sensor
• Wired connection
• Extendable Telescope (up to 820 mm)
• Fixed plug-in head cable

Features & Benefits

• Precision Air Velocity & Temperature Measurement: Integrated temperature sensor and pressure compensation ensure highly accurate flow and thermal data.
• Slim 7.5 mm Probe Head: Ideal for accessing tight ducts and small ventilation openings where standard probes cannot reach.
• Extendable Telescope: Provides a reach of up to 820 mm for deep duct access without compromising measurement stability or accuracy.
• Intelligent Digital Calibration: Measurement processing occurs inside the probe, reducing overall system error and allowing for separate calibration to maximize uptime.
• Hot-Swappable Functionality: Can be connected or replaced while the measuring instrument is on, minimizing downtime during field work.

Applications

• Measuring air velocity and temperature in ventilation ducts and systems.
• Evaluating low to medium airflows at grilles and plate outlets.
• Commissioning and balancing HVAC systems for optimal performance.
• Troubleshooting airflow inconsistencies and ventilation issues.

Tradie Pro Tip

For critical airflow measurements in small or hard-to-reach ducts, always utilize the full extension of your hot wire probe to ensure stable, representative readings across the flow path. Regular, separate calibration of the probe ensures maximum accuracy without interrupting your main instrument's workflow.

Technical Specifications

Pair With

• Testo 440 Air velocity and IAQ measuring instrument
• Testovent 410 Volume Flow Funnel
• Digital Manometers

Ensure precise airflow diagnostics for optimal HVAC performance. Invest in the Testo 0635 1026 Hot Wire Probe today and experience unmatched accuracy and convenience for all your ventilation measurement needs.