BERTHOLD TECHNOLOGIES LB 480, Руководство пользователя

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02.2017
Menu Structure Volume 3
2.47
Meas Settings
Menu path: Device Config

Meas Parameter

Meas Settings .
1 Time Const
Shows the time constant used to average the measured value.
2 Nuclide
Display of the isotope (nuclide) selected for the calibration. It must
be the same as the source which is used at the measuring site.
• Co-60
• Cs-137
• USER DEFINED
This information controls the automatic decay compensation and
must match the information on the type plate of the shielding.
3 Cal Method
Indicates which type of calibration was last performed:
• 1-POINT LIN (1-point linear)
• MULTIPOINT (multi-point calibration with 2 ... 11 points)
• 1-POINT EXP (1-point exponential)
• 2-POINT EXP (2-point exponential)
4 Cal Curve Type
Indicates whether the curve was calibrated rising or falling.
• STANDARD
With rising level, the count rates of the calibration points are
falling.
• REVERSED
With rising level, the count rates of the calibration points are
rising. Only needed in special cases, such as backscatter mea-
surements.
5 Threshold
Shows the switching threshold where the measurement sets
the digital output on alarm. To use this signal, you have to set
the parameter
Digital Out Function to ALARM under I/O
Setup .
6 Hysteresis
The hysteresis prevents that the signal bounces during switching. A
value of 5% is common.