Installation
Installation Recommendations
The transmitter is a simple device to install However, the following measures are
recommended for reliable, trouble-free operation:
•
Align pipe accurately Piping should be accurately aligned and of correct length
The high pressure body of the transmitter can withstand shock and flow/pressure
pulsation However, the piping should be firmly supported by external mounting
brackets, both upstream and downstream of the meter, to avoid any pipe flexing
actions that could reduce meter life
•
Use rigid mounting If the transmitter inlet or outlet are to be rigidly mounted, and the
opposing port is to be connected to flexible hose, the end connected with the flexible
hose must be rigidly mounted
•
Use Teflon® tape for sealing NPT fitting
•
Install unions Install a union near the inlet or outlet of the transmitter This will
facilitate quick, easy meter removal and inspection during periodic
maintenance procedures
•
Make sure the fluid is traveling in the direction of the flow arrow See
OTEE:
N
The MR flow transmitter display board can be rotated 180° for optimal viewing Simply remove
the MR flow transmitter cover, disconnect the ribbon cable, rotate the display board 180°,
reconnect the ribbon cable, and reinstall cover See Figure 10 for cover screw tightening
sequence
•
Use at least a 200 mesh (74 micron) filter The transmitter will allow particulate to pass
that would jam most valves and flow controls Systems that do not have filtration
should be equipped with at least a 200 mesh (74 micron) filter Most hydraulic systems
already have much finer filtration Dirt, ferrous metal or sealing agents, such as Teflon®
tape may lodge and cause malfunction If the meter is jammed at a fixed position,
follow cleaning and maintenance instructions
•
Do not
use thread locking compounds as thread sealant
•
Do not
install the transmitter near turbulence producing fittings such as elbows,
reducers, or close coupled valves The transmitter does not require flow straighteners
or special lengths of straight inlet/outlet piping to stabilize turbulent flow patterns
However, to assure maximum operational reliability, avoid installation of elbows,
valves and/or reducers immediately adjacent to the meter inlet
•
Do not
install the transmitter near fast-acting valves Fast-acting valves have
the potential to create high magnitude hydraulic pressure spikes These spikes
can damage the internal components of the meter, resulting in inaccuracies or
malfunction
•
Do not
allow unidirectional transmitters to be operated against the direction of the
flow arrow The standard transmitter is a unidirectional flow meter The piston acts as
a check valve to block flow in the reverse direction This causes an excessive pressure
differential, which can result in damage to internal meter components The transmitter
is also available in a modified design, which offers a reverse flow bypass feature to
accommodate bidirectional flow
Page 5
September 2017
XMT-UM-00498-EN-03