Hot Wire Anemometer-Testo 425
Make: TESTO (Made in Germany)
Model Code: TESTO 425
Part Code: 563 0425
Order Code: KLSTE011005630425
The compact hot wire anemometer testo 425 with telescopic probe is ideal for simple, fast and precise determination of flow velocity and volume flow in ventilation ducts of air conditioning and ventilation systems. The connection to the testo Smart App enables configuration, display (also as second screen) and storage as well as documentation of the measurement directly in the App.
Features:
✔ Simple, fast and precise flow and temperature measurement plus volume flow calculation in the ventilation duct
✔ More flexibility for duct measurements with the cable-connected telescopic probe (maximum length 820 mm)
✔ Fast in-app (duct) configuration, graph history, second screen and measurement data memory in the testo Smart App
✔ Timed and point mean value calculation
SKU:KLSTE01100563 0425
Brand Category: Testo (Germany)
Product Category: Velocity Measurement
Warranty: 2 Years (against manufacturing defects only )
Digital Hot Wire Anemometer-Testo 425
The Testo 425 Digital Hot Wire Anemometer is a compact and precise instrument designed for measuring air velocity and temperature in HVAC systems, cleanrooms, and other controlled environments. It features a telescopic probe with an integrated temperature sensor for simultaneous measurement, ensuring efficiency and reliability. The device provides real-time flow calculations, such as volume flow, making it ideal for quick assessments and detailed diagnostics. Key highlights include:
- Telescopic Probe: Extendable for reaching ducts and vents easily.
- Accurate Measurements: Precision in both air velocity and temperature readings.
- User-Friendly Design: Lightweight and ergonomic for comfortable handling.
- Data Display: Clear, backlit display for easy reading, even in dimly lit areas.
- Application Flexibility: Suitable for HVAC balancing, exhaust monitoring, and cleanroom compliance.
Technical Data
Temperature - NTC
Measuring range
-20 to +70 °C
Accuracy
±0.5 °C
Resolution
0.1 °C
Velocity -Thermal anemometer
Measuring range
0.01 to 30 m/s
Accuracy
±(0.5 m/s + 5.0 % of mv) (20.01 to +30 m/s)
±(0.03 m/s + 4.0 % of mv) (0.01 to +20 m/s)Resolution
0.01 m/s
General technical data
Weight
268 g
Dimensions
135 x 60 x 28 mm
Operating temperature
Probe: -20 to +70 °C
-20 to +50 °CProduct-/housing material
ABS + PC / TPE
Cable length
1.5 m
Diameter probe shaft
7.5 mm
Protection class
IP20
Length probe
180 mm
Battery life
35 h
Battery type
3x AA
Storage temperature
-20 to +50 °C
Accessories/ Probes
Digital temperature, humidity and air flow meter-testo 480
Order Number: 0554 0660
9V rech. battery for instrument
Order Number: 0515 0025
Lithium battery, button cell, type CR 2032
Order Number: 0515 0028
Recharger for 9V rechargeable battery
Order Number: 0554 0025
Control and calibration kit for Testo humidity probes
Order Number: 0554 0660
ISO calibration certificate
Order Number: 0520 0006
Downloads
Product Brochures
➤ Datasheet testo 425(application/pdf, 308 KB)
Manuals
➤ Instruction manual testo 425(PDF, 1.8 MB)
Supply/ Delivery Scope
- Testo 425 – Thermal hot wire anemometer with App connection and fixed telescope (max. 820 mm)
- Transport bag
- Calibration protocol
- 3 x AA batteries
