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5 Maintenance
In many applications, it is recommended that you recalibrate the probe
with the handle and the testo 440 once a year.
This can be carried out by Testo Industrial Services (TIS) or other
certified service providers.
Please contact Testo for further information.
5.4 Carrying out a firmware update
Information on current firmware for testo 440 can be found at
on the product page.
You have downloaded the firmware file to your computer.
1
Connect the testo 440 to your computer using the micro USB cable.
The AutoPlay window opens automatically.
2
Click on Open folder
view files]
to view files.
The window with available file folders opens.
3
Drag the firmware file to the open
window.
The copying process is completed.
4
Disconnect the testo 440 from the computer.
5
Switch the testo 440 off and then on again.
The firmware is automatically installed.
50
GlobalTestSupply
www.
[Open folder to
.com
sales@GlobalTestSupply.com
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