mru SWG100 CEM, Руководство пользователя

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MRU GmbH SWG 100 User Manual
Page 77 of 155
Case 1: Stand-by
The Stand-by modus will be activated if the input state is higher than the number of sample points (example: 4
sample points and input state 5…15). The Stand -by modus has the following pass:
- Purging with zero gas (for the configured duration)
- Standby until the input state is below or equal the number of sample points (e.g. 4 sample points and input state
1.4)
Case 2: External control of a sample point
-Zeroing: First the zeroing will be done. The duration of the zeropoint can be set at the menu ext. crtl. (see point
“ configurated at the analyzer ” in the same chapter).
-Gas sampling: The gas sampling is for purging the entire system and give the analyzer enough time for
response. (Response time). To set the suction/ response time, see point “ configurated at the analyzer ” in the
same chapter.
-Measurement: The measurement will be started after the response/ suction time is finished. It will be only abort,
if the user changes the status of the external signal sources. The chart below shows the possible statues, which
can be set at the analyzer:
(*1): Whenever the selected sample point will be changed, then the analyzer will start a zeroing before
measuring the new sample point.
(*2): Not only status numbers 4 to 15, but all status numbers larger than the number of installed sample points
will start the “stand - by” (example: when you have 4 sample points, then status numbers 5 to 15 will trigger “stand -
by”).
(*3): When the status number changes to a “stand - by“ number, then the analyzer will purge the sensors, then it
will close all solenoid valves and switch off the gas pump. When the status number changes back to a value less
or equal to the number of installed sample points, then a “set to zero” cycle will start and afterwards the selected
sample point will be measured.
Note: The “stand - by” status can easily be used to initiate just a zeroing without any “stand - by” and without
changing the sample point.
Example : - status number=1 (for any time period, recommended max. 1 hour)
- status number=15 (for a few seconds, recommended min. 10 seconds)
- status number=1 (for any time period, recommended max. 1 hour)
After installation and power-up of the analyzer few steps should be processed in order to operate the instrument
properly.