Chapter 5 _______________________________________________ Wiring and Power Management
VAISALA_______________________________________________________________________ 69
Power Management
The power consumption varies significantly, depending on the selected
operating mode or protocol, the data interface type, the sensor
configuration, and the measurement and reporting intervals.
Lowest consumption is achieved with the Native SDI-12 mode,
typically about 1 mW in standby (0.1 mA at 12 V), while with ASCII
RS-232 or Continuous SDI-12 modes it is about 3 mW in standby. Any
activated sensor measurement adds its own extra consumption to the
standby power.
Some hints for economic power management are given below. The
consumption values are all defined for 12 V supply. For 6 V supply,
multiply the values by 1.9. For 24 V supply, multiply the values by 0.65
(see Figure 28 on page 54).
NOTE
If you use the transmitter on an RS-485 bus with other polled devices,
always disable the error messaging feature with the command:
0SU,S=N<crlf>.
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