NIVELCO EasyTREK SCD-300 Series, Инструкция по установке и программированию

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P05: - - - - Minimum measuring distance (Close-end blocking)
Basic feature of the ultrasound level meters is their not being able to measure next to the sensor surface. Within this range the measurement can not be
interpreted, thus it should be avoided that material level get into this range. By entering a value, higher than the factory default, the minimum measuring
range will be extended and fixed to that value. Manual close-end-blocking would be used for example to block out the echo originating from the bottom
rim of a stand-off pipe or from any object protruding into the ultrasonic cone near to the transmitter.
Automatic Close-end-blocking (Automatic Dead Band control)
By using the factory default value, the unit will automatically be adjusted to the smallest possible dead band (
X
m
). In ideal cases this can be smaller and
in disadvantageous mountings greater than the dead band.
Manual close-end-blocking P05 = X
B
> X
m
Entering greater value in P05 than
X
m
will represent the extension of the close end blocking.
E
ASY
TREK
Level transmitters
for liquids
Minimum measuring
distance
(X
m
)
[
m
]
S
†
D – 34
†
–
†
0,5
S
†
D – 33
†
–
†
0,6
S
†
D – 31
†
–
†
1,0
FACTORY DEFAULT
:
automatic close end blocking (X
m
as per the table)