Metrohm tiamo 2.1 (ProcessLab) - Manual (Page 1062)

5.6 Commands ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
1046 ￭￭￭￭￭￭￭￭ tiamo 2.1 (ProcessLab)
Cylinder volume Filling time in s
max. 100 mL/min 50 mL/min 10 mL/min
1 mL 24/--- --- --- ---
2 mL ---/22 --- --- ---
5 mL 24/22 --- --- 34
10 mL10 mL 24/22 --- --- 64
20 mL 24/22 --- 28 124
50 mL 24/22 34 64 304
Example
1 L reagent is to be dosed within 1 hour with a 50 mL exchange unit. What
is the dosing rate?
Total duration = 60 min
Dosing volume = 1000 mL
Filling time = 24 s (at max. filling rate)
Cylinder volume = 50 mL
Number of refillings = dosing volume/cylinder volume = 1000/50 = 20
If the division gives a whole number, the last filling is no longer a refilling
and must be deducted. In our example, 19 refills are necessary. There is no
dosing during this time, i.e. the net dosing time is
3600 s - 19 × 24 s = 3144 s = 52.4 min
The dosing rate is thus
1000 mL/52.4 min = 19.1 mL/min
Summary in a formula:
Dosing rate in mL/min = dosing volume/(total duration - number of refillings
• filling time • 1/60)
5.6.6.3.3 DOS - Track call
Dialog window: Method ▶ DOS pH/DOS U ▶ Monitoring ▶ [New]/[Properties] ▶ Track
call #
Monitoring
Selects the quantity at which a track is to be started when its limit value is
exceeded.
Selection Measured value | Temperature | Any
Default value Measured value