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10D1476 K-MAG MAGNETIC FLOWMETER INSTRUCTION MANUAL
2.2 Location
The flowmeter is suitable for either indoor or outdoor installation. When selecting the installation site,
consideration should be given to the ambient and process temperature limits, as stated in Specifica-
tions Section 1.3. The standard meter is rated NEMA 4X, (dust tight and watertight) and will thus
stand rain and hose down. If flooding is a problem, the optional "Accidental Submergence" flowmeter
is suited for applications where occasional submergence to 30 ft H
O/48 h (9 m H
O/48 h) may occur.
2
2
Stray electromagnetic and electrostatic fields, low power radio transissions, etc. will have no effect
upon the operating characteristics of the K-MAG magnetic flowmeter system. It is recommended,
however, that the meter not be installed within the immediate proximity of heavy induction equipment
such as pumps, motors, etc.
Outline dimensions of the flowmeter are given in Figures 2-1 through 2-4.
The installation site must be provided with a source of 12 or 24 V dc or 120 V ac, 50/60 Hz (220/240
V ac, 50/60 Hz optional) single phase line power. Power requirements for the particular magnetic
flowmetering system are given on the instrument data tag. The power source must have an external
disconnect and suitable fuse (or circuit breaker) as shown on the applicable interconnection diagram.
System interconnection diagrams are provided in the Instruction Manual supplied with the particular
signal converter.
2.3 Mounting
2.3.1 Meter Orientation
The Model 10D1476 K-MAG magnetic flowmeter may be installed in horizontal, vertical or sloping
pipe runs. However, precautions must be taken to assure that the meter is filled at all times during
measurement. A vertical installation, with the pipe line carrying liquid upwards, assures a filled
hydraulic line under low flow rate conditions and also minimizes wear on the metering tube by
abrasive grit. Horizontal installations should be made with the meter in the lower section of a pipeline
to assure a filled meter condition.
The electronic housing of the meter should be top oriented for horizontal or sloping installations. This
aligns the meter electrodes in a lateral plane, a position that eliminates the possibility of entrained air
acting as an electrode insulator. Electrodes must not be on "top" when the meter is horizontally
mounted.
The magnetic flowmeter must be oriented in accordance with the direction of process flow, as
indicated by the FLOW arrow on the meter data tag. Elbows should be located a minimum of three
pipe diameters upstream from the meter. Control valves should be located on the downstream side
of the meter. Control valves upstream of the meter can create turbulence that result in air pockets
and may effect the meter's accuracy or cause its output to be noisy. If for some reason the control
valve cannot be located downstream from the meter, a minimum of ten pipe diameters upstream are
required between the meter and the control valve. The requirements for control valves also applies to
pumps. Pipe diameters are measured from the centerline of the meter to the nearest edge of the
device, as shown in Figure 2-5. For higher accuracy requirements, use twice the recommended
number of pipe diameters.
When the process liquid contains abrasive grit, avoid disturbance of the flow profile upstream of the
meter so that the liquid passes smoothly through the meter; elbows and turns can distort the flow
pattern causing uneven wear of the ceramic spool.
2-4
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