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Corrosion erosion
Choose proper materials. Apply an additional corrosion
thickness. Application of painting systems adapted to the
environment.
Corrosion cavitation
Choose proper materials. This is metrological equipment, the
user must set up devices to avoid cavitation.
Abrasion
Choose proper materials – Apply an additional corrosion
thickness. It remains under user responsibility to periodically
check the condition of the equipment.
ATEX Recommendations
When applicable, this equipment is ATEX certified and complies with the essential Health and Safety
requirements relating to the design and construction of equipment intended for use in potentially explosive
atmospheres (2014/34/EU Directive).
For safe operation, please ensure that this equipment is used in total compliance with the instructions given on
the ATEX certificate and nameplate. Please consult the user manuals, equipment installation and maintenance
manuals regarding the various parts used in this device. This equipment must be installed and serviced by trained,
specialized staff who understand the languages used in the manual.
If you require a manual or any additional information, please contact the FAURE HERMAN Customer support
team:
FAURE HERMAN -
Route de Bonnétable – 72400 La Ferté Bernard – France
+33 (0)2 43 60 28 60 - +33 (0)2 43 60 28 70 - [email protected]
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Meter Body
The meter body is most commonly made of carbon steel or stainless steel (AISI 316/316L or
equivalent); other materials are available upon request (Duplex, Hastelloy …).
The meter body contains a removable cartridge. Depending upon meter size and operational
preferences, the body can be fitted with one, two or three bosses, allowing generation of single or
dual pulse signals to flow computer, as well as the addition of a localized readout via a totalizer if
desired. The position of the electronic enclosures is arranged so that pulse trains delivered by the 2
coils are 90° out of phase.
The meter body will contain the following markings:
•
An arrow indicating the direction of fluid flow
•
A manufacturer's nameplate with specific equipment identification
NOTE:
TZN CUS cartridges are distinguished from TZN STD versions by their specific fixed rotor
shaft and the presence of bearing supports in the crosspieces.
Measurement Cartridge Types by Size
Nominal sizes
≤
3" The cartridge is centered and
fastened into the body by means of an upstream
stainless steel threaded ring. NOTE: on older models, the
ring is part of the cartridge.
Nominal sizes 4”
≤
14” The
cartridge
is
centered
and
fastened into the body by
means of an upstream stainless
steel ring fixed with screws.
Nominal sizes ≥ 16" The 3 piece cartridge is centered and fastened into the body by means of
upstream and downstream stainless steel cross pieces containing the rotor. The outer rings are
fixed into the meter body to hold the cartridge in place with screws.
Figure 3.
Cartridge types by size
