Operating power - WMT700

WMT700 Series User Guide

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User guide

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 consumption
Figure 3. Operating supply power consumption