Brookfield LFRA Texture Analyzer Manuel d'utilisateur télécharger pdf (Page 15)

Brookeld Engineering Labs., Inc. Page 15 Manual No. M/05-370-B0507

Note: TheStartbuttonmaybeusedtozerotheLFRAatanytimeduringtheStaticLoad

test.IfyouremovetheweightsandHangerandthedisplaydoesnotreturntozero,

pressStarttozero.BesuretoremovetheweightsandHangerpriortozeroingthe

LFRA.

ThedisplaywillchangetoshowStaticLoadactiveparametersoncethezeroprocessiscomplete

(seeFigureIII.9).TheHangershouldbexedtotheHangerMount.TheBaseTablemustbe

adjustedtothelowestpositiontoallowtheHangertobeplacedontheHangerMount.

Note: The Hanger is part of the calibrated weight set, and it has a calibrated weight value.

This weight must be included as part of the total weight applied to the load cell.

TEST: STATIC LOAD

ADD HANGER AND MASS

LOAD: 0.1g

Figure III.9

Attach the desired weight to the Hanger and record the load value from the display. Multiple

weightsmaybeattachedtotheHangertoachievearangeoftestpoints.Brookeldrecommends

verifying calibration at a minimum of three points over the range of the LFRA (check the instru-

ment serial tag for the load range).

Do not apply excessive upward, downward or sideways force to the Hanger Mount or

Hanger while adding or removing weight. This may damage the sensing mechanism

of the LFRA.

TheLFRAshouldshowtheappropriateweightvaluewithinthespeciedinstrumenttolerance.

TheaccuracyoftheLFRAisdenedbytheratingoftheloadcellasdetailedinTableIII.2.If

theLFRATextureAnalyzerproducesdataoutsideoftheacceptablerange,contactBrookeldor

ourauthorizedrepresentativeforinformationonrepair/calibrationservices(seeAppendixCfor

Brookeldlocations).

Load Range Load Accuracy

Model Grams Grams

LFRA-100 0 – 100 0.5

LFRA-1000 0 – 1,000 5.0

LFRA-1500 0 – 1,500 7.5

LFRA-4500 0 – 4,500 22.5

Table III.2

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 45 46

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Brookfield LFRA Texture Analyzer Manuel d'utilisateur Page 15