HAVER Net Weighers - Haver Filling Systems, Inc.

HAVER & BOECKER
The Solution Provider
HAVER
Net Weighers

HAVER-type 7480 H high performance net weigher
Bags Octabins Big Bags Bulk loading of trucks
As a result from continuous
innovation of our
high performance net
weighers, now up to
2400 discharges per hour
with a consistently high
level of weight accuracy
can be achieved when
filling free-flowing granular
material.
The HAVER net weigher’s
low maintenance needs,
rugged construction and
compact size make it
especially easy to install
in existing filling plants.
For providing operational
safety, the double-bottom
weigher trapdoors are
equipped with a self
restraining system and
remain closed in the
event of a compressed air
outage. All corners are
rounded as well.
The filled volume of the
container is up to 120
dm 3 and allows a weighing
range of 10 to 50
kilograms. Mobile filling
plants require operatorfriendly
cleaning, and so
all containers are now
equipped with cleaning
covers and protective
enclosures designed as
doors.
The HAVER MEC III
electronic weighing
system with three load
cells make up an automatic
weighing unit
that’s easy to calibrate.
2

Components
Dosing unit maintenance cover
All parts are easily accessible
for maintenance and
cleaning. The dosing
hopper is equipped with
a maintenance cover,
which makes it especially
easy and quick to clean
when changing over to
different products.
Weighing container
Equipped with a doublebottom
trapdoor for providing
extremely short
discharge times. Depending
on the product and
fill weight, the volume is
between 68 - 118 litres.
Load cells
The weighing container
hangs from three load
cell members. This prevents
the adverse effects
of temperature fluctuations
and assures consistent
weight accuracy.
All components in the
weigher area are easily
accessible thanks to an
easy-to-remove and
lockable metal panel.
Door enclosures
This panel may be
equipped with an electrical
monitoring system if
requested.
3

Functional principle of the weigher
Servo-drive unit
Weight
recording
Dosing
parameters
The control loop of the
HAVER electronic weighing
system delivers the
highest level of weight
accuracy, even at maximum
filling rates. The
weigher adjusts itself
automatically to various
products and ambient
conditions.
p(x)
σ χ =
Σ χ 2 − n . χ − 2
n
–
-2σ x +2σ
Gaussian distribution curve
4

The MEC III weigher electronics and DPS data processing system
MEC III Terminal emulation on the touch-screen panel of the FFS machine operating unit
The MEC III is the result of
continuous innovation of
HAVER electronic weighing
systems. More than 18,000
electronic weighing units
are in operation worldwide.
The MEC III can be calibrated
and is a PTB approved
measuring instrument
with a resolution of 6000
increments. In addition to
weighing, the MEC III controls
the machine functions.
The operation and display
of all functions take place
at an operator terminal with
graphic display (see page 4)
or via the MEC III terminal
panel of the FFS operating
system. The simple and
well structured operating
sequences are menu-guided,
or executed simply by pressing
a pictogram function
key. Plain text messages are
given in English, German
and in the local national
language.
The DPS V 4.1 data processing
system is a program
for detecting, recording and
reporting process data. Data
from the HAVER weigher
controller and other compatible
check weighers can be
collected. Up to eight
packing lines may be managed
simultaneously using
the appropriate PC interfaces.
The weigher data can
be evaluated to produce statistics
such as mean weight,
standard deviation, total
weight, total number of
bags, etc. This allows daily,
weekly, monthly and
annual reports to be generated,
as well as single weight
reports, weigher diagrams
and Gaussian distribution
curves.
DPS V 4.1 start screen
5

Bulk loading
Mobile net weigher for bulk loading
6

HAVER net weigher with water rinsing
A concept that will convince you
High pressure spray nozzles clean
the entire product area, thus
allowing the weigher and filling
system to go back into operation
after the shortest interruption time.
This assures reliable cleaning
whenever changing the product or
colour.
And to reduce the drying time, the
area can be dried with either warm
or cold air.
The HAVER net weigher equipped
with automatic water rinsing is an
important success factor in batch
filling operations.
Water spraying nozzle
HAVER net weigher with water rinsing
7

HAVER & BOECKER
THE TECHNOLOGY GROUP
HAVER & BOECKER
HAVER & BOECKER
Latinoamericana
HAVER
FILLING SYSTEMS
HAVER FRANCE
HAVER & BOECKER
HAVER TRADING
HAVER & BOECKER
IBERICA
I BAU HAMBURG
W.S. TYLER
CANADA
FEIGE
ABFÜLLTECHNIK
FILLING
HAVER I BAU SHENZHEN
PM 256 2802 0506 1 Fe
The machines and plants shown in this leaflet as well as the stated technical parameters are examples of customer-specific technical solutions. Therefore they are subject to modifications.
P.O. Box 33 20 • D-59282 OELDE, Germany • Phone: +49-25 22-30 0 • Fax: +49-25 22-30 403 • E-mail: mf@haverboecker.com