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Description
Main Function
The Testo 425 is designed for temperature and wind speed measurement and air volume calculation in ventilation and air-conditioning systems.
Key Product Information
| Feature | Details |
|---|---|
| Brand | Testo |
| Product Model | Testo 425 |
| Product Type | Thermo-sensitive / thermal anemometer |
| Measurement Functions | Temperature, wind speed, and air volume calculation |
| Application | Ventilation ducts, air-conditioning systems, airflow checking |
| Display | Backlit display |
| Reading Hold | Yes |
| Max / Min Display | Yes |
| Mean Calculation | Multi-point / time average calculation |
| Probe Type | Telescopic hot-wire probe |
| Probe Extension | Maximum extension up to 820 mm |
| Probe Diameter | 7.5 mm shown |
| Ease of Use | Accurate measurement and easy to use |
Main Features
| Feature | Description |
|---|---|
| Temperature and Wind Speed Measurement | Measures air temperature and wind speed accurately. |
| Air Volume Calculation | Automatically calculates air volume for ventilation testing. |
| Backlit Display | Makes readings clear and easy to read. |
| Hold Function | Maintains the current reading for convenient viewing and recording. |
| Maximum / Minimum Display | Displays maximum and minimum values directly. |
| Multi-point / Time Average Calculation | Supports average calculation for more reliable airflow analysis. |
| Retractable Handle | Telescopic probe helps measure airflow in ducts and hard-to-reach areas. |
| Portable Design | Compact handheld design for field work and HVAC inspection. |
Product Advantages
- Temperature and wind speed measurement and air volume calculation
- Accurate measurement and easy to use
- Hold function, display maximum / minimum value
- Backlit display for quick and clear readings
- Telescopic hot-wire probe for duct testing
- Suitable for ventilation and AC system inspection
Application Areas
| Use Field | Details |
|---|---|
| Ventilation Ducts | Measures wind speed and air volume inside ducts |
| Air-Conditioning Systems | Used for airflow testing and system performance checks |
| Indoor Air Quality Support | Helps verify whether airflow is properly set |
| HVAC Maintenance | Useful for technicians during inspection and balancing work |
Functional Feature Highlights
1. Temperature and wind speed measurement and air volume calculation
Used for monitoring airflow in ventilation systems and calculating air volume.
2. Hold function, display maximum / minimum value
Keeps readings on screen and allows direct max/min display.
3. Multi-point / time average calculation
Supports averaging functions for better airflow analysis.
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