UM-0090-B1E
DT90 Range User Manual
Page 15
RG
Figure 11: SDI12 Settings
Other Settings
DT90 loggers enable powering measurement equipment from own power source. Depending on the logger model type
the user can choose between:
-
12V
– stabilized 12 V voltage from an integrated inverter with maximum current efficiency at the level of 200 mA
(DT90 L) and 100 mA (DT90 N)
-
5V
– stabilized 5 V voltage from an integrated inverter with maximum current efficiency at the level of 200 mA
(DT90 L)
The user might apply the aforementioned supply voltage levels, depending on their needs. Please note that activating
inverters for 5V and 12V voltage in one of two modes, that is, active during measurement or always active (
can influence on electricity consumption of the internal battery pack.
After activating the voltage supply the sensors usually need a certain time to stabilise their operating parameters. This
time differs between different sensor manufacturers and models. The
Measurement Delay
field shows integer numbers
ranging from 0
– 120 s.
It is important to remember that cumulating the delay in initiating measurement with the measurement time might in
particular cases result with incapability to obtain the smallest measurement intervals and data transmission intervals. In
such case unforeseeable delays and irregularities in saving the measurements in non-volatile memory might occur.
Moreover, the logger remains active and its energy intake is higher for the defined period of delay.
Figure 12: Power Output setting
That's why the value entered in
Measurement Delay
field should be optimally adapted to the applied sensors. Please
consult the sensor manual or manufacturer support to receive information about warm up time.
It is also possible to supply the sensor power at all times, but it is not advised if the logger is using batteries or solar
panels for power.
