Thermo Scientific SAM12, Руководство пользователя

Страница: 51 / 176

Issue: 1.0 Operating Instructions
Thermo Fisher Scientific SAM12 User Manual 5-11
Default: 5 s
Maximum Monitoring
Time (s)
Note that the Maximum monitoring time must be
equal to or greater than Minimum monitoring time.
It must be set to a high enough value to prevent a
high background fault.
This is the Maximum time for which articles are
monitored. A monitoring time is calculated by the
SAM12 to meet the background and the statistical
requirements. For given alarm and statistical
requirements this parameter will limit the
background count-rate allowed.
To achieve a fixed monitoring time, set the
minimum and maximum monitoring times to the
same value.
Values: 3 to 300 s
Default: 100 s
Measurement Start
Timeout (s) This is the length of time (in seconds) that the user
has to press the Start button after closing the door.
If the timeout is exceeded, the SAM12 reverts to
Normal Background Monitoring.
Values: 3 to 360 s
Default: 10 s
Quick Scan Period (s) This is the length of time (in seconds) for the Quick
Scan to run (see Options (page 5-6) ).
Values: 3 to 60 s
Default: 10 s
Background Logging
Interval (hours) Select an interval between 1 and 168 hours for the
SAM12 to periodically log the background. Select
0 to disable the periodic logging.
Note that each time a mandatory 100 second
background is performed the backgrounds for each
detector will be logged to the database.
Values: 1 to 168 hours (0 to disable)
Default: 0
Measurement
Confidence (
σ )
The instrument uses this figure to calculate the
effective alarm level. It is the number of standard
deviations measured against the Alarms (see
Alarms
(page 5-12) ).
Values: 0.1 to 7 sigma in 0.1 sigma steps.
Default: 2
σ
Out of Service
Recovery Interval
(mins) When the unit is Out Of Service (page 5-62) , the
system automatically clears the error after the Out
of Service Recovery Interval has passed. Select 0 to
disable the Recovery Interval.
Values: 0 to 60 mins
Default: 0
Params 3