Make sure that you connect only de-energized wires.WARNING!
To avoid exceeding the maximum ratings in any condition, the voltages
must be check
ed with no load at the power supply output.
CAUTION!
More Information
‣
P
o
wer Management (page 56)
5.2 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 v
alues b
y 0.65.
Table 4 Standby Power Consumption
Mode Standby Wind
4 Hz sampling
ra
te
4 Hz sampling
rate
1 Hz sampling
rate
1 Hz sampling
rate
Continuous
measuremen
t
10 s average
every 2 min
Continuous
measurement
10 s average
every 2 min
RS-232
RS-485
RS-422
SDI-
12
continuous
1.5 mA +4.5 mA + 0.6 mA +1.3 mA +0.2 mA
SDI-12 native 0.1 mA N/A +1 mA N/A +0.7 mA
Analog output
(mA)
N/
A 16 … 90 mA 16 ... 90 mA 16 ... 90 mA 16 ... 90 mA
WXT530 Series User Guide M211840EN-D
56
sales@streamlinemeasurement.co.uk
www.streamlinemeasurement.co.uk
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