Fluid Components International MT91 Manual Installation - Manual (Page 3)

Doc. No. 003185 Rev. B 2 - 3 Model MT91 Multipoint Flowmeter
CHAPTER 2 - INSTALLATION FLUID COMPONENTS INTL
Install Flow Element
Install the flow element as specified for the process connection type used. If applicable, connect the end of the flow
element to one of the recommended mechanical supports. See Figure A-5 or A-6.
Threaded Mounting
Note: When mounting the flow element to the process duct, it is important that a lubricant/sealant is applied to the
male threads of all NPT connections. Be sure to use a lubricant/sealant compatible with the process
environment. Tighten all connections firmly. To avoid leaks do not overtighten or cross-thread
connections.
1. Verify end hardware is loose if present. Carefully insert flow element into process mount. Align with end
support if present.
2. Verify that the process media is in the same direction as the FLOW ARROW on the FLAT.
3. Threads are right-handed. Place pipe wrench on unthreaded portion of metal shaft. Rotate until snug and
continue to turn until FLAT is horizontal to process flow. Apply even pressure so as not to disfigure nipple.
Caution: Do not apply any leverage to the local enclosure itself.
4. Tighten all connections firmly. Tighten all end hardware firmly if present.
Flanged Mounting
1. Verify end hardware is loose if present. Carefully insert flow element into process mount. Align with end
support if present.
2. Attach the process mating flange with care. Maintain the correct orientation of the flow element to ensure
accuracy.
3. Verify that the Process Media is in the same direction as the FLOW ARROW on the FLAT.
4. Apply the appropriate gasket and/or sealant to flange mount faces as required.
5. Attach with a bolt, two flat washers, lock washer and nut for each bolt hole; apply lubricant/sealant to male
threads and torque. Refer to ANSI B16.5 specifications.
6. Tighten all connections firmly.
Install Flow Transmitter
Use Figures 2-2 and 2-3 throughout this section.
Caution: Pulling wires can cause damage to the electronic components. Use extreme care when pulling wires
into the remote enclosure.
In applications where the flow element is located in an explosive environment, isolate the conduit
before it leaves the environment. A potting Y may be used to provide the isolation.
Minimum Wire Size
Table 2-1 shows the smallest (maximum AWG number) copper wire that should be used in the electrical cables.
Use a lower gauge of wire for less of a voltage drop. Contact FCI concerning greater distances than those listed in
the chart.