Mettler Toledo PR/SR Operations Instructions Page 32

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PR/SR balancesExtended basic functions
4.4 Entering a fixed tare weight – " PreTare "
The "PreTare" function allows you to enter a known tare weight numerically or by weighing and call up or clear the current value.
The PreTare value is then automatically subtracted from the current weight and the net weight appears in the display.
Requirement
The "PreTare" function must be activated in the menu under "WEIGH -> Tare" (section 6.2). In weighing operations, "PreTare"
then appears in the bottom line of the display.
Entering weighed tare value
Remove any load from the balance and zero with the ¥ key.
The following applies after zeroing: Tare weight = 0, net weight = 0.
Press Πkey.
Place tare container on the balance.
The container weight is displayed.
The current weight is transferred as a fixed tare preset to the PreTare memory, the
top line shows zero.
The "Net" symbol signals that all subsequent values are displayed as net values.
Entering a known tare weight numerically or calling up the current value as a
tare preset
Press SmartBar under "PT".
PT
74.55 g-
PT
0.00 g-
PT
0.00 g-
1/10d
Off
On
T
C
1/10d
AutoCal BPTGNet
AutoCal
BPTGNet
PT
861.18 g-
1 2 3 4 5 6 7 8 9 0 <
T=74.55 g-
1 2 3 4 5 6 7 8 9 0 <
T=99.71_g-
PT
836.02 g-
AutoCal
BPTGNet
BPTGNet
AutoCal
BTGNet
Cal / Test
0
Menu
AutoCal
BTGNet
The top line shows the current tare weight. "T=…" symbolizes a weighed value
(determined with the Œ key). "PT=…" symbolizes a value that has been
entered manually (PreTare).
Enter numeric value of known tare weight and confirm with H, or confirm
displayed value directly with the H key.
If the container whose weight has been entered was on the weighing pan with the
sample, the net weight of the sample and the "Net" symbol are automatically
displayed following the entry.
If the display was zero, the inputted value appears in the top line with a negative
sign and the "Net" symbol.
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