Vega VEGAPULS 6X - Page 81

81
9 Set up with the display and adjustment module
VEGAPULS 6X • Two-wire 4 … 20 mA/HART
66190-EN-221107
→Anincreaseofthevalueavoidsthatsuchafalsesignalisaccepted
as level echo.
Note:
Anincreaseisusefulforveryheavilyuctuatingoramplitude-increas-
ing false signals. It is advised against reducing the value of the default
setting.
This function is used to activate and select the function " Summarize
echoes". It consists of the individual parameters " SP13 - Amplitude
dierencewithfunction"Summarizeechoes"" and " SP14 - Echo
distanceforfunction"Summarizeechoes"".
→Thishelpstosuppressmeasuredvaluejumpsresultingfrommate-
rialconesoremptyinghoppersinbulksolidsapplicationswhenlling
and emptying.
This parameter in " dB" determines how great the maximum ampli-
tudedierencebetweentwoadjacentechoesmaybeinorderto
summarize them.
This parameter in " m" entered here determines how great the dis-
tancebetweentheendoftherstechoandthestartofthesecond
echo may be at the maximum in order for them to be summarized.
Whenthisparameterisactivated,therstechonotsavedasafalse
echowithsucientlygreatamplitudeisselectedasaproductecho.
→Thisisusefulforverylargemultiplereectionsbye.g.aroundves-
sel lid.
This parameter in " dB" determines how much smaller the useful echo
amplitude may be compared to the largest echo so that it is evaluated
astherstlargeechoandthusasaproductecho
→Uptothisvalue,arelativelyweakreectionsignalofthemediumis
thus output as a measured value.
This parameter determines the measuring window width " m" around
the currently measured level echo. Only within this focusing range
are changes (location, amplitude, number of echoes) accepted for
evaluating the current level.
→Ifthisvalueisincreased,veryrapidlevelchanges,e.g.duetocol-
lapsingmaterialheapsorsurge-likelling/emptying,areaccepted
even in an extended range.
Themeasurementreliabilityisthedierencein"dB" between echo
amplitudeanddetectioncurve.Thisparameterdenestherequired
min. measurement reliability an echo must have outside the focussing
range to be accepted as useful echo.
→Thisisusefultoobtainthemeasuredvaluealsoincaseofsporadic
loss of the level signal, e. g. with foam generation.
SP12 - Activate "Summa-
rize echoes" function
SP13 - Amplitude dif-
ference in "Summarize
echoes" function
SP14 - Echo distance
for "Summarize echoes"
function
SP15 - Activate "First
large echo" function
SP16 - Minimum ampli-
tude "First large echo"
SP17 - Wide focussing
range
SP18 - Minimum meas-
urement reliability out-
side focussing range