DigitalFlow™ Multipurpose Ultrasonic Liquid Flowmeter Startup Guide (1- and 2-Channel) 55
Appendix C. Optional Enclosures
Appendix C. Optional Enclosures
C.1 Introduction
Upon request the Model DF868 flowmeter may be supplied in an enclosure other than the standard Type-4X enclosure
described in Chapter 1, Installation, of this manual. Although the standard installation and wiring instructions still
apply in general terms, some of the details may vary for different enclosure types. Refer to the appropriate sections of
this appendix for the specific type of enclosure provided.
C.2 Rack Mount Enclosure
The Model DF868 flowmeter is available in a rack mount enclosure for installation in a standard 19” electronics rack.
Refer to Figure 15 on page 57 for the dimensions of this unit. Simply slide the Model DF868 into the rack at the desired
height and fasten the unit securely to the rack with four screws in the locations provided at the sides of the front panel.
After the unit has been physically mounted into the rack, proceed to the next section for instructions on wiring the
meter.
C.3 Rack Mount Wiring
The rack mount Model DF868 requires exactly the same electrical connections as the standard version. However, the
locations and type of connectors used for the various components are different. Refer to Figure 16 on page 58 and
complete the following steps:
1. Wire the power input on the right side of the rear panel as follows:
a. Make sure a fuse (item #4) of the proper size and type is installed.
b. Connect the female end of the line cord provided to the power input receptacle (item #3).
c. Connect the earth ground screw terminal (item #2) to a ground point on the rack.
2. Wire the transducers as follows:
a. Connect the pair of cables supplied with the meter to the Channel 1 upstream and downstream BNC transducer
connectors on the left side of the rear panel.
b. For a 2-Channel meter, repeat the above step for the Channel 2 transducer connectors (if the second channel is to
be used).
c. Complete the transducer wiring in accordance with the instructions in Chapter 1, Installation, of this manual.
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