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13 various commands, 1 stirring (stir), 2 waiting (wait) – Metrohm 840 PC Control 5.0 / Touch Control User Manual

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Parameters

PC Control / Touch Control

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4.13 Various commands

Various commands are brought together in the command group Mis-

cellaneous

: switching the stirrer on/off, defining a waiting period or

stopping the run, requesting sample data or common variables, acous-

tic signal, signing the determination and stopping the method se-

quence.

4.13.1 Stirring (STIR)

The STIR command is used to switch a connected stirrer on or off.
Control device: Selects the control device (Titrando, USB Sample

Processor etc.) to which the stirrer which is to be controlled is con-

nected. This button is only shown when several control devices

have been configured under System/Device manager (see Sec-

tion 3.10

). The device name is always shown in the selection list.

Stirrer: Selects the stirrer. All the stirrer connections (MSB) will al-

ways be shown.

Status/Duration: The stirrer can be switched on or off, or switched

on for a certain time. When the stirrer is switched on, you can set

the stirring rate.

Stirring rate: You can test the optimal stirring rate manually (see

Section 3.24.3

). The stirring direction changes as the sign changes.

The default setting 8 corresponds to 1000 rpm (see Section 4.1.5,

Fig. 4.14

).

4.13.2 Waiting (WAIT)

This command can be used to pause the method sequence.
Hold sequence: When this function is activated the method se-

quence will be halted (HOLD) until it is continued manually with

[Continue]

.

Waiting time: If Hold sequence is deactivated then a waiting time

can be entered. The method sequence will restart automatically

when this waiting time has elapsed.

Message: When this function is activated the text for the message

will be shown during the waiting time.

Message text: Text to be shown during the waiting time.