Brookfield CT3 Texture Analyzer - Manual (Page 25)

Brookfield Engineering Labs., Inc. Page 25 Manual No. M08-372-C0113
with the sample. Once the probe contacts the sample the test will begin at the defined speed. The
range of acceptable trigger values depends upon the load cell in use and is shown in Table III.1.
In general, the trigger value should be large enough to prevent a false trigger from starting the test
before the probe comes in contact with the sample. A false trigger is usually the result of excessive
vibrations passing through the lab bench. A 5g trigger is typical.
When the surimi sample ruptures, the load measured by the CT3 will drop. The Correction value
specifies the size of the load drop, in grams, that is required to recognize a gel rupture. The correction
value may be set from 5g to 99g. The two most common correction values used are 30g or 50g.
The default setting is 30g and should be good for most surimi applications.
The test speed for all surimi testing has historically been 1 cm/s, so this is the default value. The
test speed can be set from 0.1 mm/s to 10 mm/s, which is equivalent to 1 cm/s.
Changing the test speed is likely to change the gel result.
During the test the display will show live deformation and load.
TEST: SURIMI
DEFORMATION: XX.XX cm
LOAD:
XXXX.X g
III.28
As soon as the surimi gel ruptures, the result screen will appear.
PEAK LOAD: 465.0 g
DEF@PEAK: 0.81
cm
GEL: 376.65 g *cm
TEMP: 19.8 C
III.29
The GEL result is the multiplication of Peak Load times Def@Peak in units of g-cm.
If a temperature probe is used with the CT3, the temperature at the time of the test is also shown.
The TEMP line will not be seen in the display if a temperature probe is not used. DO NOT insert
the temperature probe into the surimi sample being tested.
GLOBAL PARAMETERS - there are some parameters that affect every test screen. The speed of
the probe prior to triggering is the pretest speed, which is called Pre Speed on the display screen.
This may be set over the range of 0.1mm/s to 2.0mm/s.
ENTER GLOBAL PARAMS
PRE SPEED:
0.5MM/S
POST SPEED: 10.0MM/S
TEMP. C/F: 19.0C
III.30