Fluid Components International MT91 Installation

CHAPTER 2 - INSTALLATION FLUID COMPONENTS INTL

2. Installation

Receiving/Inspection

• Unpack carefully

• Verify that all items in the packing list are received and are correct.

• Inspect all instruments for damage or contaminants prior to installation.

If the above three items are satisfactory, proceed with the installation. If not, then stop and contact a customer
service representative.

Packing/Shipping/Returns

These issues are addressed in Appendix C - Customer Service

Factory Calibration Note

The flowmeter is factory calibrated to the flow range specified in the order. There is no need to perform any
verification or calibration steps prior to installing and placing the flowmeter in service.

Pre-Installation Procedure

Warning: Only qualified personnel should install this instrument. Install and follow safety procedures in

accordance with the current National Electrical Code. Ensure that power is off during installation.
Any instances where power is applied to the instrument will be noted in this manual. Where the
instructions call for the use of electrical current, the operator assumes all responsibility for
conformance to safety standards and practices.

Caution: The flowmeter is not designed for weld-in-place applications. Never weld to process connection or a

structural support.

Damage resulting from moisture penetration of the flow transmitter or flow element enclosure is not
covered by product warranty.

The flow transmitter containsESD components. Use standard ESD precautions when handling the flow
transmitter. See below for ESD details.

Use Standard ESD Precautions

Use standard ESD precautions when opening an instrument enclosure or handling the flow transmitter. FCI
recommends the use of the following precautions: Use a wrist band or heel strap with a 1 megohm resistor connected
to ground. If the instrument is in a shop setting there should be static conductive mats on the work table and floor
with a 1 megohm resistor connected to ground. Connect the instrument to ground. Apply anti static agents to hand
tools to be used on the instrument. Keep high static producing items away from the instrument such as non-ESD
approved plastic, tape and packing foam.

The above precautions are minimum requirements to be used. The complete use of ESD precautions can be found in
the U.S. Department of Defense Handbook 263.

Doc. No. 003185 Rev. B 2 - 1

Model MT91 Multipoint Flowmeter

FLUID COMPONENTS INTL CHAPTER 2 - INSTALLATION

Verify Serial Numbers

Verify that the flow elements' serial number matches the flow transmitter serial number. A tag indicating the serial
number is located on the local and remote enclosures, see Figures A-2, A-3, and A-4.

When multiple flow elements connect to one flow transmitter, each flow element serial number has a suffix that
represents the flow element number. For example, if two flow elements connected to a flow transmitter have a base
serial number of 123, then the first flow element would have the serial number 123-1, and the second flow element
would have the serial number 123-2.

Prepare or Verify Flow Element Location

Mount the flow element at least 20 diameters downstream and 10 diameters upstream from any bends or interference
in the process pipe or duct to achieve the greatest accuracy.

Mount the flow element where the flow stream temperature is well above the saturation temperature of any of the
process gases. If a component of the process media is near its saturation temperature, it will probably condense on
the sensing points. Liquid on the sensing points will drive the flow measurement higher than actual.

The flow element’s shape is cylindrical with a diameter of 2 inches. The length is customer specified. The
recommended diameter for the clearance hole needed to mount the flow element is 2.03 inches. See Figure A-5 for
recommended process connection.

For optimum performance, prepare additional support at the end of the flow element for instruments exceeding 2 feet
in length. Refer to Figure A-5, and A-6 for recommended end support configuration.

Verify Dimensions

Verify the flow element and flow transmitter dimensions as shown in Appendix A.

Verify Flow Direction for Flow Element Orientation and Placement

The flow element comes with a FLAT area machined on the flow element near the enclosure. Etched in the FLAT is
a FLOW ARROW indicating the direction of flow. See Figure 2-1.

Figure 2-1. Flow Element Showing FLAT Area

Align the flow element during installation so the FLAT is parallel, to the direction of the process media flow, and
the FLOW ARROW points in the direction of process media flow. Failing to install the flow element correctly will
reduce the accuracy of the flowmeter.

Model MT91 Multipoint Flowmeter 2 - 2 Doc. No. 003185 Rev. B

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.

Doc. No. 003185 Rev. B 2 - 3

Model MT91 Multipoint Flowmeter

FLUID COMPONENTS INTL CHAPTER 2 - INSTALLATION

Table 2-1. Interconnecting Cable Size (AWG)

Maximum Distance for AWG

Connection

10 ft.

(3m)

50 ft.

(15m)

100 ft.

(31m)

250 ft.

(76m)

500 ft.
152m)

1000 ft.

(305m)

AC Power 22 22 22 20 18 16

Relay (2A) 28 22 20 16 12 10

Flow Element Wires* 24 24 24 22 22 18

*Requires a shielded cable which is connected to the Flow Transmitter

Remote Hardware

Figures A-3 and A-4 show the remote enclosures along with physical dimensions to properly mount the flow
transmitter. Select a location for the flow transmitter within 1000 feet of the flow element. This location should be
easily accessible with enough room to open the enclosure cabinet door or remove a panel at any time. Secure the
flow transmitter solidly to a vertical surface capable of providing support. Use nuts and bolts to secure the flow
transmitter.

Power Connection Information

Note: The installation of an AC line switch between the AC power source and the flowmeter is recommended.

This facilitates easy power disconnection and is an added safety feature.

The flow element power supply is not field selectable. Connect 85-265 Vac operating power and a power ground to
the flow transmitter. Follow the appropriate procedure below to connect power.

NEMA 4 Remote Enclosure

Install the customer supplied conduit and/or cable through the 1 inch female NPT ports. Remove the terminal block
shield located at the top right hand corner on TB1 and wire according to Figure 2-2.

Rackmount Remote Enclosure

Install the customer supplied conduit or cable though the back side of the enclosure. Remove the terminal block
shield located on the left wall (looking from the rear) on TB1 and wire according to Figure 2-2.

Sensing Point Connections

There are up to 16 different sensing points per flow transmitter. Sensing point 1, on the flow element, is the point
closest to the local enclosure. Sensing point 2 is the next down, etc.

In the local enclosure, sensing points are identified on the terminal board. For example, TB1-HD1 connects to
sensing point 1. In the remote enclosure, sensing points are identified by the connector number. For example, J1
corresponds to sensing point 1.

1. Run eight-conductor-shielded cable from the local enclosure to the remote enclosure for each sensing point. Use
Table 2-1 to determine which wire gauge to use.

2. In the local enclosure is an 8-pin connector for each sensing point, wire each cable to a connector per Figure 2-2.

Note

: Before inserting the cable wires into the terminal strip connector, turn the screw counterclockwise 7 turns.

If this is not done, it is possible to insert the wire between the top half of the clamp and the frame instead of
between the two clamp segments.

3. Tag the cables to clarify which cable connects to which sensing point. Follow the appropriate procedure below
to connect sensing points.

Model MT91 Multipoint Flowmeter 2 - 4 Doc. No. 003185 Rev. B