Mettler Toledo PR/SR Operations Instructions Page 13

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11
PR/SR balances Startup procedure
2.3 Leveling
Exact horizontal positioning of high-resolution balances is a prerequisite if reproducible weighing results are to be obtained at all
times. PR/SR balances thus have a leveling control (level) and adjustable leveling feet to compensate slight irregularities in the
surface of the balance location. The balance is exactly horizontal when the air bubble (1) is in the middle of the level.
Procedure with PR balances
With PR balances, you need only align the two front leveling feet.
The imprint surrounding the level makes the leveling of PR balances particularly simple.
Turn the two front leveling feet as shown in the imprint or illustration until the air
bubble is in the middle of the level.
If, for instance, the air bubble is at the bottom right, /R / in the imprint signals
that you must turn the Right front leveling foot in the direction of the arrow
(counterclockwise).
Several leveling steps are usually necessary.
Procedure with SR balances
Screw in one of the four leveling feet as far as it will go.
Level balance using the three remaining leveling feet, which should be at the
same level.
Unscrew the leveling foot first screwed in until it touches the supporting surface.
The balance must be releveled each time it is moved to a new location.
If you work with heavy loads and wish to obtain results with the highest possible accuracy, the two rear
leveling feet of the PR balances must be unscrewed until they touch the bench surface.
R
L
L
R
1
1
The balance must be releveled each time it is moved to a new location.
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