Saving presets

Automatic and automated instruments can be differentiated as follows automatic instruments tend to perform specific operations at given points in a process or analysis to save time or effort, e.g. robotics, while automated instruments tend to control some part of a process without human intervention and do this by means of a feedback mechanism from sensors. For example, an automatic conductivity detector might continuously monitor the conductivity of a process stream, generating some alarm if the conductivity goes outside a preset limit. An automated detection system could transmit the measured conductivity values to a control unit that, by utilising a feedback mechanism, adjusts relevant process parameters, e.g. temperature or cycle time, to maintain the conductivity of the stream within the preset limits. 

Samples are typically withdrawn as aliquots at preset time intervals via syringe and saved for subsequent analysis. Figure 1.2 illustrates the batch reactor internals required to control the temperature and withdraw samples. 

A saved variable set restored in the PRESET section will also override all the single variable PRESET definition within the models. 

Which brings us to the second reason this list is vital You can save your own custom presets to the list. Here s how ... 

To save your own presets, first type a name for your preset and then click the Save button to the right of the list. 

To modify one of your own presets, select it from the list, modify the parameters in the dialog box, and then click the Save button. 

The presets from Sonic Foundry are protected and cannot be saved with modifications or deleted, but you can start with a Foundry preset and save it to a new name. 

The question of trays versus lean oil rate is a classical illustration of economic analysis. However, in the case of reboiled absorbers, the solution is seldom clear-cut since a savings in trays and tower height requires an increased lean oil rate. This in turn increases the refrigeration requirements and necessitates greater capital investment and operating costs. For the most part, the number of trays is preset, allowing lean oil rates to vary as a function of key component recovery. A suggested value for the number of trays is 10 theoretical trays, which will usually result in approximately 20 real trays. For low recoveries, this may result in lean oil rates which are too low for satisfactory tray operation. In this case, the number of trays should be reduced to provide an adequate oil rate. 

Preset control at speaker podiums and at other key location in the conference rooms allow speakers to have total control of the lights and shades without disrupting their presentations. Each space has been designed with both energy-savings and comfort as top priorities. 

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