B&K 2250 Light Uživatelský manuál stáhnout pdf (Strana 106)

Hand-held Analyzer Types 2250 and 2270 – User Manual

Fig.8.10

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8.7.2 Timers and Automatic Measurements

Automatic control of the analyzer is available via one or more of the analyzer’s timers (up

to ten).

The purpose of a timer is to initiate measurements in the absence of an operator. Basically, a

timer will:

• Switch on the analyzer at a preset time

• Load a preselected template

• Start a measurement as specified in the template

• Stop the measurement after a preset time defined by the Timer Setup

• Save the measurement

• Switch the analyzer off

• Repeat the above a preset number of times at preset intervals

For a timer to work, the analyzer must be in the ‘switched off’ state.

A timer will never interrupt the analyzer if it is already in use manually. If a switch-on time is

set during the time the analyzer is in use, the timer opportunity is lost.

You can control the analyzer during a timer-initiated measurement as long as this does not

affect the measurements. If you try to change any parameters affecting the measurement you

will be warned of this. If you persist, the analyzer will revert to manual control and timer

control cannot be resumed.

The Timer Setup lists the timers that have been defined previously on the analyzer (that is,

added by you or previous users).

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B&K 2250 Light Uživatelský manuál Strana 106