FLR Flow Transmitter Installation & Programming Instructions
Installation Recommendations
The transmitter is a simple device to install. However, the following measures are recommended for reliable,
DO - Align pipe accurately. Piping should be accurate- ly 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 action that could reduce meter life.
DO - Use rigid mounting. If the transmitter inlet or out- let 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.
DO - Use Teflon® tape for sealing NPT fittings.
DO - Install unions. Install a union near the inlet or outlet of the transmitter. This will facilitate quick, easy removal and inspection during periodic maintenance procedures.
DO - Ensure the fluid is traveling in the direction of the flow arrow (Figure 5 on page 6).
NOTE: The FLR Flow Transmitter display board can be rotated 180° for optimal viewing. Simply remove the FLR Flow Transmitter cover, disconnect the ribbon cable, rotate the display board 180°, reconnect the rib- bon cable, and reinstall cover. See Figure 8 on page 7 for cover screw tightening sequence.
DO - 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 transmitter is jammed at a fixed position, follow cleaning and maintenance instructions. See Maintenance section on page 14.
DON’T - Use thread locking compounds as thread sealant.
DON’T - Install the transmitter near turbulence pro- ducing fittings such as elbows, reducers, close cou- pled valves, etc. 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 installa- tion of elbows, valves and/or reducers immediately adjacent to the transmitter inlet.
DON’T - Install the transmitter near
DON’T - Allow unidirectional transmitters to be operated against the direction of the flow arrow. The standard transmitter is a unidirectional flow transmitter. 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 transmitter components. The transmitter is also avail- able in a modified design, which offers a reverse flow bypass feature to accommodate
NOTE: Transmitters with a reverse flow bypass feature are available. Consult factory for details.
Electrical Connections
Cable may be shortened or lengthened as required by installation. The cable is soldered directly to the electrical connector at the factory.
Cable replacement requires disassembly of the electrical connector.
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