Siemens sitrans PROBE LU Instruction Manual page 64

P832 TVT Shaper Adjust
Note:
This parameter is for use by Siemens Milltronics Service personnel.
Allows manual adjustment of the TVT curve.
P837 Auto False-Echo Suppression
Use P837 and P838 together, to set SITRANS Probe LU to ignore false echoes
to set the Auto TVT distance first.
Notes:
• This function works best when the vessel is empty or nearly empty: use it only if
there is a minimum distance of 2 meters from the transducer face to the material.
• Set P837 and P838 during start up, if possible.
• If the vessel contains an agitator, the agitator should be running.
If SITRANS Probe LU displays a full level, or if the reading fluctuates between a false high
level and a correct level, set P837 to elevate the TVT in this region and to de-sensitize the
receiver from any 'base noise' caused by internal transducer reflections, nozzle echoes,
or other vessel false echoes. Set P838 and then P837 (detailed instructions follow P838).
Values
Display before Auto False Echo Suppression
false
echo
1.
For more detail, see
Page 58 SITRANS Probe LU – INSTRUCTION MANUAL
0 * Off
Use 'learned' TVT. (See 'learned TVT curve' in
1
after Auto False Echo Suppression
2 Learn
(or when P837 = 0)
default TVT
true
echo
Distance (meters)
TVT (Time Varying Threshold) curves
on page 59.)
P839
Hover Level
on page 82.
1
. Use P838
Display
7ML19985HT01