Lamy Rheology FIRST PLUS LR, Руководство пользователя

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Manual Mode enables to choose your measurement parameters like «Measuring System »,
« Speed or shear rate» then « Time of measurement ».
If your measuring system is not in list, you may have to create it. Please refer to section 2.2.5.6.
Choice between “Speed” or “Shear rate” is according to your measuring system. For MS
ASTM, MS BV, MS KREBS and MS VANE, you should have only possibility to set the speed.
For all other measuring system, you have to use shear rate. If you need to know what is the
corresponding speed then you are using shear rate, you have to use constant K
D
of your
measuring system (information available in section 2.2.5.6).
With speed unit in rpm, shear rate in s
-1
and K
D
is rpm/s
-1
.
Then your settings are ok, you must do a zero. All LR models require zeroing before
measurement. The zero is done with the mobile and same speed as for measure. Once the
zero has been completed, the instrument will prompt you to place the mobile in the product for
measurement (see section 3).
Rq : If « Time » = 0, you could modify « speed » during the measurement. This
could help you to define the best conditions to work on your sample.
SPEED = SHEAR RATE / K
D
Select your measuring
system
Choose speed or shear rate
Choose time for measurement
(minimum 10 s)