User's Manual

90
80
70
60
50
40
30
20
10
0
RB
0 2 4 6 8 10 12 [m]14
TI : TK-560SmartRadar Min-Max Diagram.
[dB]
08-11-1996 13:27
BA417-1899001-D0
: TK-56002.MMD
:.18739535005
File
SN
6.926
Tank
Zero
Min. Ull
Max. SF.
ZA
ZP
ZB
Service and troubleshooting
Page 38
Caution
Do not damage the thread of the covers and 973 housing and keep the thread free of dirt.
After opening, grease it lightly with anti seize grease.
When closing, never tighten the covers before the threads are properly engaged.
The covers should be turned counter-clockwise until the thread “clicks” in place,
then turn clockwise until the covers are fully closed.
Figure 4.2 Example of min max diagram
4.2 The instrument covers
The SmartRadar LT enclosure is water proof IP67. For this purpose, the covers are fitted with O-rings.
Check the O-rings before closing the instrument.
4.3 Min max diagram
One of the features of the 973 SmartRadar LT is that the instrument keeps track of the measured
reflections. The minimum and maximum product reflection strength, measured at each Fourier interval, is
stored.
Whenever a larger reflection strength is measured at a specific Fourier interval, the previous value is
overwritten. The same is done for the minimum reflection strength value. In this way, a reflection history is
present in the instrument.
The minimum and maximum reflection strength values can be retrieved by the Ensite service tool producing
a so-called “min max diagram”. Figure 4.2 gives an example of a min max diagram.
In the example above, all measured product reflections are well above the product zone threshold.
However, if some of the minimum reflections where found just above or at the product zone threshold, this is
a signal that the product zone threshold should be lowered (or the gain, item
5O
, should be increased).
The memory of the min max diagram can be cleared with command
CZ
.