Seametrics iMAG 4700r User Manual

IMAG 4700r INSTRUCTIONS
Seametrics • 253.872.0284 Page 9 seametrics.com
Positioning the Meter
These meters can be installed horizontally, vertically (with
upward ow), 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. The iMAG requires
straight pipe before and after the meter for best accuracy.
However, the ability of electromagnetic meters to average
the ow 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
ow. If air bubbles may be present in the pipe or sludge
accumulation is an issue, rotate the meter by one ange
hole to position the control housing at a 45˚ angle (see
diagrams on page 8).
Fittings. The iMAG has ANSI 150 lb. drilled anges and
will mate with any other ANSI 150 lb. anges. See table
onpage10forangebolttighteningtorquespecications.
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 uid
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 ow of
uid of uniform conductivity.
CAUTION: These ow sensors are not recommended where
installation may expose the ow 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).
CAUTION: In chemical injection applications, install chemical
injection point downstream of magmeter, or far enough
upstream to allow complete mixing of uids.
ATTENTION: dans les applications d’injection de produits
chimiques, installez le point d’injection de produits chimiques
en aval du débitmètre électromagnétique ou susamment en
amont pour permettre un mélange complet des uides.
INSTALLATIONINSTALLATION
Installing Gaskets
1. Be sure all mating surfaces are smooth and free of
debris.
2. Install Seametrics provided gaskets, or equivilent,
on each end of meter as shown in diagrams below.
If using grounding rings, install one gasket on each
side of the grounding ring..
3. Failure to install gaskets will void warranty.
Installation without grounding rings
Installation with grounding rings
NOTICE: Gaskets are required at all
junctions.
AVIS: Des joints sont requis à toutes les
jonctions.
Gaskets
Gaskets
Grounding
Rings

Seametrics iMAG 4700r Specifications

General

Brand	Seametrics
Model	iMAG 4700r
Category	Measuring Instruments
Language	English