Rice Lake Sartorius Midrics 1 and 2 Series - Operating Instructions - Manual (Page 18)

Entering Geographical
Data
Purpose
Entering geographical data allows
the external calibration of weighing
equipment at a place (e.g. at the manu-
facturer or vendor’s place of business)
that is not the same as the place of
installation. If the weighing equipment
is calibrated at the place of installation,
it is not necessary to enter geographical
data.
The sensitivity of weighing equipment
changes depending on the place of
installation as it is dependent on the
on-site gravitational force – or, more
precisely, on gravitational acceleration.
Saving geographical data makes it pos-
sible to change the place of installation
of the weighing equipment after exter-
nal adjustment has been carried out.
The calibration of weighing equipment
is valid at the place of installation and
within a specific tolerance zone. At
3000 e this zone extends ±100 km from
the set geographical latitude and ±200
m from the set elevation above sea
level.
An exception to this is the setting for
“Germany (Zone D)”:
If during external calibration of weigh-
ing equipment within Germany the
geographical data
– 51.00° geographical latitude
– 513 m elevation above sea level
are entered, the weighing equipment
can be used throughout Germany.
Gravitational acceleration for “Germany
(Zone D)” is 9.810 m/s?.
On delivery the geographical data for
“Germany (Zone D)” are entered in the
output device.
It is recommended to use the geograph-
ical data settings for “Germany (Zone
D)” when calibrating and delivering the
weighing equipment within Germany.
Entering exact geographical data will
lead to a higher level of accuracy but
will also restrict the tolerance zone.
Set-up Information
– It is only possible to enter geographical
data when the menu access switch is
open.
– Geographical data can be entered when
the service mode in the Setup menu for
“WP 1” is activated. The settings are
made in the corresponding Setup menu
under menu item 1.20.
– Either the geographical latitude in
degrees (menu item 1.20.1) and eleva-
tion in m above sea level (menu item
1.20.2), or the value for gravitational
acceleration (menu item 1.20.3) can be
entered.
Gravitational acceleration takes prece-
dence over the geographical latitude
and elevation of the location: If it has
been entered, input fields for latitude
and elevation show the values 99999.99
and 9999999 respectively. If only eleva-
tion and latitude have been entered,
0000000 is displayed for gravitational
acceleration.
! If you return to the highest level of
the Setup menu without saving the
configuration parameter beforehand
(menu item 1.20.4) any settings that
have been made will be deleted.
Procedure
– Open the menu access switch. If the
device is part of a verified weighing
facility, this will only be possible if the
verification seal is broken. The weighing
equipment must then be verified again.
– Activating the service mode
– Select the weighing platform
– Enter the geographical data for the
place of calibration under menu items
1.20.1 to 1.20.3 and save them under
menu item 1.20.4. The data can be
obtained from the relevant land registry
or Ordnance Survey.
– Carry out external calibration
(see page 20)
– After the calibration, enter the geo-
graphical data for the place of installa-
tion under menu items 1.20.1 to 1.20.3
and save them under menu item 1.20.4.
– Close the menu access switch.
– The weighing equipment can now be
operated at the place of installation,
and within the abovementioned toler-
ance zone.
Note:
The set geographical values are displayed
during the calibration procedure if the
display of the data has been activated
in the Setup menu under “utilit” menu
item 8.12.2 (factory setting: 8.12.1,
display deactivated).
When the display of the geographical
data is activated the calibration proce-
dure is as follows:
If the elevation and geographical
latitude are used, after the start of the
calibration procedure “CAL” the word
“ALTITUDE” will appear briefly followed
by the set elevation (in meters above
sea level). The display is confirmed
using the ) key (and cancelled using
the ( key). Then, the word “LATITUDE”
will be displayed briefly, followed by
the set geographical latitude in degrees.
This can also be confirmed using the )
key (and cancelled using the ( key).
After this, you will be prompted to
place the calibration weight on the
platform. If gravitational acceleration
has been entered instead of elevation
and geographical latitude, the word
“GRAVITY” will appear briefly, followed
by the set value for gravitational accel-
eration. The display is confirmed using
the ) key (and cancelled using the ( key).
18 18
Menu Structure for Entering the Geographical Data
1. 20. Calibration location (geographical latitude and elevation; or alternatively the gravitational acceleration
at the place of installation)
1. 20. 1 Latitude in degrees
1. 20. 2 Elevation in meters above sea level
1. 20. 3 Gravitational acceleration
1. 20. 4 Save values for 1. 20