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Chapter 1
Planning
Topics covered in this chapter:
¨ Installation checklist
¨
9739 MVD transmitter components
Installation checklist
q Make sure that the transmitter is suitable for the environment in which it will be installed. See the hazardous area
specied on the transmitter approval tag.
q Locate and mount the transmitter according to the following requirements:
− The transmitter must be accessible for service and calibration.
− The ambient temperature of the location must remain between –31 and +131 °F (–35 and +55 °C). If the
transmitter has a display, the display may become difcult to read below 14 °F (–10 °C).
− The mounting location must allow the following clearance for removal of the housing cover:
• 11.50 inches (292 mm) for units without displays
• 10.46 inches (266 mm) for units with displays
− To prevent condensation or other moisture from entering the housing, orient the transmitter with its conduit
openings pointed downward. Be sure to seal the three 3/4-inch NPT female conduit openings to keep the
transmitter watertight.
q Verify that you have the appropriate 9-wire cable and required cable installation parts for your installation. Use
Micro Motion 9-wire cable to wire the 9739 MVD transmitter and sensor. For wiring between the transmitter and
sensor, verify the maximum cable length does not exceed 1000 ft (300 m).
q Ensure that you use twisted-pair, shielded cable for all I/O connections.
q For ATEX installations, you must strictly adhere to the safety instructions documented throughout this manual and
to the ATEX approvals documentation available on the internet at www.micromotion.com.
q For ATEX installations, each transmitter is shipped with a standard lockout clamp secured to the housing. The lockout
clamp prevents access to the transmitter wiring terminals and electronics module. When removing or attaching the
transmitter housing cover, you must remove and reattach the transmitter housing lockout clamp (see Figure 1-1).
Important
For custody transfer applications in the United States and Europe, you must install a transmitter lockout clamp
designed specically for the custody transfer application. Contact Micro Motion for more information on
receiving the appropriate parts for your application.
InstallationManual1