4
General Information
Scale Description
The Maxi Move scale makes it possible to
weigh patients during a transfer. The load cell is
attached to the jib. The scale is comprised in
part of a digital load cell, meaning all the analog
to digital conversion is performed internally
within the load cell. The load cell then sends the
information to the main board over a RS-485
bus, in ASCII format. Finally, the information is
displayed on the handset.
Verified scale
Each Maxi Move KMC
Q
A
Q
is equipped with a
scale that has been
verified
, and whose
gravitational code has been set for the specific
location where it will be used. The lift has a
scale marking label (see Fig.1) on the control
tower, above the handset door. This is the
official mark for the scale verification.
Fig.1
The verified scale also has its tilt sensor
enabled, which means that the display will go
blank if the angle of the load cell is greater than
3 degrees (in the horizontal plane). In addition,
the verified scale can only be used with the units
of measurement set to “kg”.
The scale is sealed by an electronic seal. Within
the load cell, there are two electronic counters: a
calibration counter
and a
gravity counter
. Each
time an operation changes the value of the
calibration or of the gravity code, the
corresponding counter is automatically
incremented, without any possibility of being
reset. On the scale marking label, there are
actually two labels: a
calibration label
and a
gravity label
. These labels are applied at the
factory and/or at the distribution centers and
have the same value of the
calibration
and
gravity counters
. If the values of the counter and
label don’t match, this means that an
unauthorized change has been performed to the
scale configuration. In that case, the verification
becomes void.
If, after the initial distribution to the customer,
the following actions need to be performed, the
scale must be subsequently verified by an
authorized notified body:
• changing the load cell
• removing and replacing the same load cell
on the jib
• calibrating the load cell
• changing the gravity code
An up-to-date list of available notified bodies in
Europe can be found at the following address:
List of European Notified Bodies.
(http://ec.europa.eu/enterprise/newapproach/
nando/index.cfm?fuseaction=na.main)
Under “Directive”, click on 90/384/EEC, Non-
Automatic Weighing instruments.
Note: When performing these operations,
carefully note them in the metrological
logbook.
Note: When changing the main circuit
board or the handset, there’s no need to
have the scale verified.
