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Hot ball probe (Ø 3 mm, digital) - including temperature sensor, wired

Hot ball probe (Ø 3 mm) - for flow and temperature
The hot ball probe (in conjunction with the appropriate measuring instrument) is ideal for determining flow velocity and temperature.
  • Non-directional flow measurement with unknown flow direction
  • Integrated temperature measurement and absolute pressure compensation for accurate measurement results
  • Intelligent calibration concept
  • Flow measuring range: 0 to +10 m/s
Use the hot ball probe (thermal anemometer) to determine flow velocity and volume flow. It is particularly suitable for low flow velocities of up to +10 m/s – primarily for non-directional, undefined air flows. The probe can also measure temperatures of up to +70 °C at the same time.

The hot ball probe is equipped with a telescope, which can be extended to a maximum length of 860 mm. With a diameter of just 3 mm, the probe is ideal for measurements in narrow, inaccessible places.
 
 

Intelligent calibration concept

The probe offers maximum digital measurement reliability. The digital probe allows readings to be processed directly in the probe. This technology eliminates instrument measurement uncertainty. The probe can be returned on its own (without the measuring instrument) for calibration. Calculating the determined calibration data in the probe generates a zero-error display.

Temperature - NTC

Measuring range
-20 to +70 °C
Accuracy
±0.5 °C

Absolute Pressure

Measuring range
+700 to +1100 hPa
Accuracy
±3.0 hPa
Resolution
0.1 hPa

Velocity / Volume flow

Measuring range
0 to +10 m/s
Accuracy
±(0.03 m/s + 5 % of mv)
Hot ball probe (Ø 3 mm) with telescope (can be extended to 860 mm) including fixed plug-in head cable.

testo 440 Air velocity and IAQ measuring instrument

: 0560 4401

testo 440 - Air velocity and IAQ measuring instrument

testo 440 100 mm Vane Kit with Bluetooth®

: 0563 4403

testo 440 100 mm Vane Kit with Bluetooth®

testo 440 16 mm Vane Kit

: 0563 4401

testo 440 16 mm Vane Kit

testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth

: 0563 4406

testo 440 Air Flow ComboKit 1 with Bluetooth®

testo 440 Air Flow ComboKit 2 with Bluetooth®

: 0563 4407

testo 440 Air Flow ComboKit 2 with Bluetooth®

testo 440 CO2 Kit with Bluetooth®

: 0563 4405

testo 440 CO₂ Kit with Bluetooth®

Accessories

Image

: 0554 1592

Measuring tripod for flow measurements - to ensure standard-compliant positioning of probes

Ideal for checking the flow velocity in laminar flow cabinets in accordance with the standards

Certificates

Calibration certificate

: 0520 0024

ISO flow calibration certificate - with 4 measuring points

4 calibration points: 0.3 / 0.5 / 0.8 / 1.5 m/s

Calibration certificate

: 0520 0004

ISO flow calibration certificate - with 4 measuring points

4 calibration points: 1 / 2 / 5 / 10 m/s

Calibration certificate

: 0520 0224

DAkkS flow calibration certificate - with 5 measuring points

5 calibration points: 0.1 / 0.2 / 0.5 / 0.8 / 1 m/s

Calibration certificate

: 0520 0244

DAkkS flow calibration certificate - with 5 measuring points

5 calibration points: 0.5 / 1 / 2 / 5 / 10 m/s

Contact
Max Sievert A-S
Sagveien 21 A
0459Oslo
Norway
+47 22 99 20 90

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