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Wiringthepowersupplyandgroundingthetransmitter
Figure 3-1 Power supply wiring terminals
E
B
C D
A
A External ground terminal
B Power supply conduit opening
C L / L1 for AC; + for DC
D N / L2 for AC; – for DC
E Power ground terminal
5. Secure the input power connections at the two labeled terminals.
For AC-powered transmitters, you may install a switch in the power supply line. For compliance with Low
Voltage Directive 2006-95-EC, a switch in close proximity to the transmitter is required for AC-powered
transmitters.
6. Ground the power supply according to the standards that are applicable at your site.
Important
Use the external ground terminal as an additional ground connection for ungrounded power supplies.
Ground the 9739 MVD transmitter
The 9739 MVD transmitter must be grounded according to the standards that are applicable at the plant. You are
responsible for knowing and complying with all applicable standards.
Prerequisites
You must properly ground the 9739 MVD transmitter according to the instructions provided. Improper grounding
could cause inaccurate measurements or ow meter failure. Failure to comply with requirements for intrinsic
safety in a hazardous area could result in an explosion. For hazardous area installations in Europe, refer to
standard EN 60079-14 if national standards do not apply.
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