GDD Instrumentation MPP3wifi Instruction Manual page 25

Initialization
The INITIALIZATION is the operation that restores the readings to zero.
Remember: it takes at least 60 minutes for the probe to warm-up. Before that time is reached,
you should initialize the probe every minute or before each reading. After the probe is properly
warmed up, it is possible to set a longer time between two initializations. The default time is one
minute. Otherwise, you could also set the time for either 5, 10 or 15 minutes.
After one minute (or else if you have changed the initialization time), a warning signal flashes to
indicate that you need to initialize the probe.
You have 30 seconds to initialize the probe from the moment the warning signal begins to flash,
then the probe stops to take measurement and ask to initialize before continuing.
Click on Save to save the system configuration.
Instrumentation GDD inc. 2017-08-21 24