Panametrics PanaFlow MV80, User Manual, Page: 46 / 184

Chapter 2. Installation
34 PanaFlow™ MV80, MV82 & MV84 User’s Manual
2.5 Loop Power Flow Meter Wiring Connections
WARNING!
To avoid potential electric shock, follow National Electric Code safety practices or your
local code when wiring this unit to a power source and to peripheral devices. Failure to
do so could result in injury or death. All wiring procedures must be per-formed with the
power off.
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
Use a Class 2 isolated power supply that is grounded, provides DC output, and has no
more than 10% output ripple.
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A power switch is not provided with this meter, an approved switch meeting the power
requirements listed in Appendix A must be provided by the user. It must be easily
accessible and marked as the disconnect for the flow meter.
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
Only the connectors sup-plied with the meter are to be used for connecting wiring.
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If the equipment is used in a manner not specified the protection provided by the
equipment may be impaired.
The NEMA 4X enclosure contains an integral wiring compartment with one dual strip terminal block (located in the
smaller end of the enclosure see
Figure 23 below). Two 3/4-inch female NPT conduit entries are available for
separate power and signal wiring. For all hazardous area installations, only suitable certified cable glands, blanking
plugs or thread adapters may be used. The cable entry device shall be of a certified flameproof type, suitable for the
conditions of use and correctly installed. The degree of protection of at least IP66 to EN 60529 is only achieved if
certified cable entries are used that are suitable for the application and correctly installed. Unused apertures shall be
closed with suitable blanking elements. If conduit seals are used, they must be installed within 18 inches (457 mm) of
the enclosure.
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Figure 23: Loop Power Wiring Terminals
2.5.1 DC Input Power Connections
To access the wiring terminal blocks, locate and loosen the small set screw which locks the small enclosure cover in
place. Then, unscrew the cover to expose the terminal block.