Watson-Marlow MC12 - Manual (Page 32)

Operators and Reference Manual
MC12
MC12 OM RM 1.03_EN Version: 1.03 Date: 2010-11-17 Page 32 of 46
Dynamic recalibration
If dynamic recalibration has been selected (Individual mode),
the display line will show: “RECALIB. INTERVAL(%)
Here the recalibration interval is entered. When a weight that lies within the chosen percentage
interval around the volume set in function 1, this weight registration is used to recalibrate the
machine. Weights registered outside the interval will be interpreted as e.g. bottle tarring, and will
therefore not be used as recalibration values.
Select a recalibration interval and press . The MC12 display will now ask for a filling
accuracy percentage by showing: “FILLING ACCURACY (%)”
This feature is used only to advise the operator if a registered weight lies within the production
requirements to the volume accuracy. When a weight is registered a short beep in a higher
frequency indicates a sample inside the production tolerance. A longer beep in a lower
frequency indicates a sample outside the production tolerance. Furthermore, if a Mettler balance
is used the text "REJECT" will be shown on the balance display.
Press to confirm the accuracy.
The dynamic recalibration from balance is now ready for operation. To use it simply put a bottle
on the balance and tare. When the bottle has been filled, put it back on the balance. When the
MC12 gives a high tone beep, the weight has been registered and used for recalibration.
When the MC12 is set for dynamic recalibration, this is indicated by a "D" in the upper right
corner of the display.
The illustration below shows the correlation between the terms used in dynamic recalibration and
the beeps generated by system.
Filling Tolerance (High tone beep)
Low tone beep
Low tone beep
Volume
0
Recalib. Interval
No tone
Low tone beep
Volume (F1)
Filling Tolerance (High tone beep)
Filling Accuracy
Figure 9 – System “beeps”