Dosing fixed volume – Metrohm 840 PC Control 5.0 / Touch Control User Manual

Page 193

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3

Operation

PC Control / Touch Control

181

selected then the dosing rate cannot be altered while dosing is

taking place.

Enter the Filling rate. The rate should be reduced for viscous

liquids. The maximum filling rate depends on the cylinder volume of

the exchange or dosing unit used (see Section 3.8.6).

You can carry out manual dosing with [Dose]. When a cylinder

volume has been added, the dosing cylinder will be refilled

automatically.

You can refill the dosing cylinder with [Fill]. The shown volume

will be reset to 0.0000 mL.

If you exit the dialog with [Back] then the dosing cylinder will be refilled

automatically and the valve switched to the exchange position.

Dosing fixed volume
Under Dosing device/Dosing fixed volume you can add a specified

volume.

Open the dialog with [Dosing fixed volume].

Enter the desired volume.

Enter the Dosing rate. The rate should be reduced for viscous

liquids. The maximum dosing rate depends on the cylinder volume

of the exchange or dosing unit used (see Section 3.8.6).

Enter the Filling rate. The rate should be reduced for viscous

liquids. The maximum filling rate depends on the cylinder volume of

the exchange or dosing unit used (see Section 3.8.6).

If the Fill automatically checkbox is activated then the dosing

cylinder will be refilled automatically after dosing has been carried out

and the added volume will be reset to 0.0000 mL in the volume display

(see below). If you want to carry out successive dosing cycles and if the

volumes that are already dosed are to be accumulated then deactivate

the checkbox. The added volume will only be reset to 0.0000 mL when

the dosing cylinder is refilled with [Fill].

Press [Start] to start the addition of the preset volume. The

display switches automatically to the volume display.

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