4.10.2.1 Power and Cable Recommendations for Fully Heated WMT700
The following table shows cable and power recommendations. If you need a longer than a 10
meter cable, Vaisala recommends using Junction Box with Cable (WMT70CABLE12) for
extending the cable length.
The minimum operation voltage for a fully heated WMT700 (transducers, arms, and body
heated) is 16 V, if a separate power supply unit is used for operation.
Table 30 Heating Power and Extension Cable
Wire Type/
Cable Length
2 m
WMT70CABLE
1)
10 m
WMT70CABLE2
1)
20 m 30 m 40 m
0.5 mm2/
AWG20
24V 400 W 28 V 400 W - - -
1 mm2/AWG17 - - 28V 400 W 30 V 400 W
32 V 400 W
2)
1.5 mm2/
AWG15
- - - - 30 V 400 W
1) Vaisala standard connection cable
2) Not for maritime use
The following figures illustrate the wiring of heated WMT700 instruments.
Figure 35 Wiring of Heated WMT700 Versions, Part 1
WMT700 User Guide M211095EN-H
80
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