KROHNE BM 102 Handbook - Manual (Page 83)

BM 102 83
F10 – Screen copy Menu
To save a bitmap image of the active window.
F11 – Dynamic configuration
Use F11-Dyn. Config. to get into the “Dynamic Configuration” menu.
Here, you can:
• read the distance to the product surface, the amplitude and the amplification factor,
• change the level threshold
• specify the distance to the product surface,
• initiate automatic search of the probe tip,
• test the current output.
Fct. Threshold
The level threshold must be adjusted according to the amplitude and the amplification factor of the
level reflection signal. The factory-set threshold is suitable for most applications.
Factory-set threshold
500V, gain 3 when distance < 2 m or < 6½ ft
Min. threshold 50 mV, gain 3
Max. threshold 2500 mV, gain 0
Where interference reflections are caused by tank fittings/nozzles or other internals, which can
lead to faulty measurements, the level threshold must be adjusted. The interference signals are
suppressed and only the signals are indicated whose amplitude lies above the threshold.
NOTE:
The level threshold may not be set when the tank is full; rather, it should ideally lie
halfway between the level and interference reflections.