o
= Ohm (Pt100)
H
= Hertz (flow m/s)
u
= Micro volt (thermocouples)
U
= Volt (humidity)
1.8.2 Zero adjustment
A long press on the F1 button (approx. 3 s) enables
you to set the displayed value on 0. Before pressing
the button make sure that the actual value also amo-
unts to 0 (no current/pressure at the probe).
1.8.3 Deactivation of the 2nd channel (toggle)
A long press on the HOLD button (approx. 3 s) ena-
bles you to activate or deactivate the 2nd measuring
channel.
For the power supply of the instrument a 9 Volt dry
battery is used. To exchange the battery switch of
the instrument and open the battery cover on the
backside of the instrument. Remove and disconnect
the battery from the instrument. Connect a new 9 V
battery to the plug and put the battery back into the
instrument.
By showing the
segment the instrument indi-
cates, that the battery has to be exchanged. After
showing the
segment the instrument allows
app. 1 hour of further measuring.
Attention:
Please do not dispose of old electronic devices and
empty batteries in household waste. To protect the
environment, take them to your retail store or to
appropriate collection sites according to national or
local regulations.
Attention:
When using a rechargeable battery, the slide switch
must set to “Akku” to charge the battery by the USB
interface. When using a standard battery (non re-
chargeable) the slide switch must set to “Batt” to
prevent any damage to battery or instrument.
14
2. Power supply
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