Positioning The Meter; Installing Gaskets - Seametrics iMAG 4700p Instructions Manual

INSTALLATION

Positioning the Meter

CAUTION: These flow sensors are not recommended where
installation may expose the flow sensor to boiler pressure and
temperature. Maximum recommended operating temperature is
140˚ F (60˚ C).
ATTENTION: Ces capteurs de débit ne sont pas recommandés là
où l'installation peut exposer le capteur de débit à la pression et à
la température de la chaudière. La température de fonctionnement
maximale recommandée est de 140 °F (60 °C).
These meters can be installed horizontally, vertically (with
upward flow), and in any radial position. Using a check
valve on the upstream side of the meter, and/or an air
vent (vacuum relief valve) in the same, unobstructed run
of pipe as the meter, is required in any installation where
the meter may be exposed to suction when the system is
not in normal operation. Suction can cause damage to
the liner. Liner damage caused by suction, without the
use of a check valve and/or air vent, may void the
warranty.
Straight Pipe Recommendations.
straight pipe before and after the meter for best accuracy.
However, the ability of electromagnetic meters to average
the flow across the entire pipe allows for shorter straight pipe
recommendations than most mechanical meters (see page 7).
Full Pipe Recommendations. To prevent false readings,
this meter is designed to indicate 'EMPTY PIPE' if one or
more electrodes is exposed. For highest accuracy, install
the meter so that the pipe will be full when there is
flow. If air bubbles may be present in the pipe or sludge
accumulation is an issue, rotate the meter by one flange
hole to position the control housing at a 45˚ angle (see
diagrams on page 8).
Fittings. The iMAG has ANSI 150 lb. drilled flanges and
will mate with any other ANSI 150 lb. flanges. See table
on page 10 for flange bolt tightening torque specifications.
Calibration. The iMAG is factory-calibrated before
shipping. The frequency of recalibration will depend on
the needs of each application and local regulatory policies.
Chemical Injection. When the iMAG is used in a chemical
injection application, the chemical injection point must
be placed downstream of the magmeter OR far enough
upstream for complete mixing to occur before the fluid
reaches the meter. When unmixed chemical alternates
with water passing through the meter, the rapid changes in
conductivity may cause sudden spikes and drops in the
meter's reading, resulting in inaccurate measurement. The
magmeter will restabilize, however, with a steady flow of
fluid of uniform conductivity.
CAUTION: In chemical injection applications, install chemical
injection point downstream of magmeter, or far enough
upstream to allow complete mixing of fluids.
ATTENTION: dans les applications d'injection de produits
chimiques, installez le point d'injection de produits chimiques
en aval du débitmètre électromagnétique ou suffisamment en
amont pour permettre un mélange complet des fluides.
Seametrics • 253.872.0284

Installing Gaskets

1. Be sure all mating surfaces are smooth and free of
The iMAG requires
2. Install Seametrics provided gaskets, or equivilent,
3. Failure to install gaskets will void warranty.
Page 9
IMAG 4700p INSTRUCTIONS
NOTICE: Do not install a magmeter
downstream of a pressure or proportional
control valve.
AVIS: N'installez pas de débitmètre
magnétique en aval d'une vanne de
régulation de pression ou proportionnelle.
NOTICE: Gaskets are required at all
junctions.
AVIS: Des joints sont requis à toutes les
jonctions.
debris.
on each end of meter as shown in diagrams below.
If using grounding rings, install one gasket on each
side of the grounding ring.
Gaskets
Installation without grounding rings
Grounding
Rings
Gaskets
Installation with grounding rings
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