Testo 0635 1032 Hot Wire Probe with Temperature Sensor

Hot wire probe for air velocity and temperature measurement, featuring a robust 300 mm shaft and a fast response time of 1.5 seconds for air velocity. Compatible with Testo multifunction measuring instruments including the 400, 440, 435, and 480 series.

Advantages

Combines air velocity and temperature measurement in a single probe, eliminating the need for multiple sensors. The hot wire sensor ensures high accuracy at low air velocities, while the NTC temperature sensor provides reliable readings across a wide range.

Suitable for

• HVAC system balancing and commissioning
• Cleanroom and laminar flow monitoring
• Indoor air quality assessments
• Duct and ventilation measurements

Key specifications

• Air velocity range: 0 to +20 m/s
• Air velocity accuracy: ±(0.03 m/s + 5% of mv)
• Temperature range: -20 to +70 °C
• Temperature accuracy: ±0.5 °C
• Probe shaft length: 300 mm
• Cable length: 1.4 m

Recommendations

For precise low-velocity measurements in HVAC and cleanroom environments, pair this probe with a Testo 440 or 480. The integrated temperature compensation ensures stable readings even with fluctuating air temperatures.