3
1 Positioning the instrument
1.1 Preface
Balances with resolutions 0.1mg and 0.01mg are instruments of high sensitivity and
precision. To achieve reliable and accurate results it is fundamental to install the
instrument in a suitable environment to meet the requirements necessary to ensure its
proper functioning.
1.2 Place recommended to install the instrument
Choose of the correct placement of the instrument is fundamental to ensure optimal and
precise operations.
For optimum weighing it is necessary to respect the following criteria:
- TYPE OF ENVIRONMENT
Place the balance in a corner of the room to minimize vibrations.
Place the balance in a secluded location: not put it near doors to prevent air
drafts.
Avoid places with many persons: every person who is close generates a draft of
air.
Protect the balance from an air conditioner or ventilation fans and other electronic
devices with fans (eg. Computer or other laboratory instruments).
Keep the room temperature as constant as possible, at a value between 15 and
30 ° C. You must use a conditioner (but leave the speed of the fan to a minimum
to avoid eccesive air drafts).
Keep the humidity where balance is used as constant as possible, it should be
between 40% and 65% of moisture.
Place the balance away from heat sources, eg heaters, light bulbs (use tubular
lamps), windows (the warmth of the sun's rays can filter out the window and may
affect the weighing result).
- TYPE TABLE
The table must be
stable
: must not sag during lean of the instrument (eg.
Laboratory bench or marble / granite counter top).
Must be as
anti-magnetic
and
anti-static
as possible.
Must be
reserved
to the balance.
Place the balance as close as possible to the table legs because there are less
vibrations
rathern than in the middle of the table.
