TESTO 400 - Commissioning and Basic Operation; Power, Charging, and Initial Setup

8 Commissioning
14
Description Order no.
Penetration probe type K
0628 0026
Penetration temperature probe
0628 1292
Surface probe
0628 9992
8 Commissioning
8.1 Mains unit/energy storage unit
The measuring instrument is supplied with an energy storage unit.
Fully charge the energy storage unit before using the measuring
instrument.
Plug the mains unit USB cable into the USB port on the side.
If the mains unit is connected, the measuring instrument is
automatically powered via the mains unit.
Only charge the energy storage unit at an ambient temperature of 0 to
45 °C.
8.1.1 Charging the energy storage unit
1
Connect the USB mains unit to the USB interface/mains unit socket of
the testo 400 (see Section 7.2).
2
Connect the mains plug of the mains unit to a mains socket.

The charging process starts.
If the energy storage unit has completely discharged, the charging time
at room temperature is approx. 5-6 hours. Only charge the instrument
at an ambient temperature of 0 to 45 °C.
If the battery level is 6 – 10%, this message is displayed: “Once the
battery level reaches 5%, the measuring instrument undergoes a
controlled shut-
down. Please charge up your measuring instrument in a
timely manner.”
If the battery level is 5% or less, the following message is displayed:
“The battery level is very low. The measuring instrument will now shut