Metrohm 900 Touch Control Manual - Manual (Page 470)

29.15 Dosing and Liquid Handling
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454 ￭￭￭￭￭￭￭￭
900 Touch Control
Upper hysteresis
The upper hysteresis represents the tolerance range for the upper limit
(see Figure 27, page 455). When Action = Wait, the dosing does not
continue until the monitored quantity has once again fallen below the
upper limit incl. the value entered here.
The values that are actually measurable may vary from the values specified
here, depending on the hardware. The binding measurement value ranges
can be found in the "Technical specifications" chapter for the control
device used.
Measuring mode pH:
Input range
0.000 - 20.000
Default value 0.020
Measuring mode U:
Input range
0.0 - 2,000.0 mV
Default value 2.0 mV
Temperature:
Input range
0.0 - 150.0 °C
Default value 0.2 °C
Action
Selection of the action which is carried out when the limits of the moni-
tored quantity are infringed.
Selection None | Exit method | Cancel command |
Pause | Wait
None
No action will be taken.
Exit method
The method is stopped immediately.
Cancel command
The current command is stopped und the next command in the
method will be started.
Pause
Adding reagent is stopped until the dosing is continued manually with
[Continue]. If several quantities are monitored, the other quantities
will still be monitored in the background.
Wait
Adding reagent is stopped until the value of the monitored quantity is
within the limits again (incl. hysteresis). The dosing is continued auto-
matically. If several quantities are monitored, the other quantities will
still be monitored in the background.