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General technical data

Weight
600 g (without rechargeable battery)
Dimensions
270 x 90 x 65 mm
Operating temperature
-5 to +45 °C
Protection class
IP40
Display size
240 x 320 pixels
Display function
Colour graphic display
Power supply
Rechargeable battery pack 3.7 V / 2.6 Ah; Mains unit 6 V / 1.2 A
Maximum memory
500,000 readings
Storage temperature
-20 to +50 °C

Differential Pressure - Piezoresistive

Measuring range
±10000 Pa
Accuracy
±3 % of mv (10 to 10000 Pa) plus ±1 Digit
±0 Pa (0 to 10 Pa) plus ±1 Digit

Flue gas O₂

Measuring range
0 to 21 Vol.%
Accuracy
±0.2 Vol.%
Resolution
0.1 Vol.%
Reaction time t₉₀
< 20 s

  • Instruction manual EasyHeat software(pdf, 3.55 MB)
  • Testo ZIV driver ZIV 2000 for testo 320 and testo 330(v2.1, 2.22 MB)
    Testo ZIV driver in the 2000 version. The Testo ZIV driver is used to connect the testo 320 and testo 330 measuring instruments to an application program (sweeping district administration program) according to the interface Version 2.0 defined by the Zentralverband des Schornsteinfegerhandwerks (Central Association of Chimney Sweeps, ZIV). Please check with the manufacturer of your application program as to whether this interface is supported. If Microsoft .NET Framework 4.0 has not been installed on the computer, it must be downloaded from the Microsoft website and installed on the system.
  • Testo ZIV driver for testo 300, testo 320 and testo 330(v2.3, 64.11 MB)
    The Testo ZIV driver is used to connect the testo 300, testo 320 and testo 330 measuring instruments to an application program (sweeping district administration program) according to the interface defined by the Zentralverband des Schornsteinfegerhandwerks (ZIV, Central Association of Chimney Sweeps) in version 1.0 of 01. August 2012, in version 2.0 of 13. February 2017 as well as version 3.0 from 02. July 2021. Please check with the manufacturer of your application program as to whether this interface is supported.
  • Update-Kit / Bootloader(V1.22, 1.24 MB)
    (testo 330 LL | testo 330i | testo 350 Control Unit + Analysis Box | testo 320)
    If the firmware update does not start under Windows 8.1 or Windows 10, a new bootloader must be installed on the measuring device once.