WMT700 can use any 9 ... 36 V (nominal voltage
24 V) minimum 2 W DC power supply that meets applicable safety regulations.
Connect heating supply wires to the ground if heating is not used. The following figures show
the typical current and power consumptions vs. operating voltage.
The selected heating option affects the needed operation voltage when separate powering
for operation and heating is used.
Do not use a DC power supply based on a
chopper circuit that operates at 100 kHz. The ripple in the DC output can distort the
measurement.
Figure 1. Wiring of non-heated WMT700
versions
In maritime environments, the normal
input voltage ranges are: operating voltage 10 … 30 V DC (-10% … +30%) and heating
voltage 24 … 30 V DC (-10% … +30%), as defined in the maritime standard
IEC 60945.
Figure 2. Operating supply current
consumptionFigure 3. Operating supply power
consumption
