Safety; Packing List; Introduction - Selecta STS-2011 L Manual De Instrucciones

MANUAL DE INSTRUCCIONES CODIGO 80253 REV 0
Spindles «L»
L 1 L2 L3
Spindles «R»
R2 R3 R4
J
.P. SELECTA s.a.
Febrero/2011

0. Safety

Rotary viscosimeters use risks are:
• Mechanical risks: There are no mechanical risks.
• Electrical risks: Please follow the instructions in this manual.
• Chemical substances contact risk: Consider safety data sheets of liquid sample
analy zed.

1. Packing List

- Viscosimeter rotor with serial number
- Support base, 3 adjustable levelling feet
- Bosshead
- Serrated rod
- Standard spindles
- Spindle protector
- Spindle support
- PT100 probe
- Power cable
- USB cable
- Datalogger software CD
- Carry case
L4
- Calibration certificate
- Instructions manual
- Spindle:
R5 R6 R7

2. Introduction

Rotary viscosimeters are used to measure dynamic viscosity. This feature expresses
the resistance of substances to distortion when applying a cutting effort.
This is a highly dependent property of measurement temperature.
As an example, we have chocolate: in a small temperature margin, its almost infinite
value viscosity (at about 10ºC is completely solid) at a very low value (at about 60ºC
is completely liquid).
Viscosity is measured by establishing the necessary force (cutting or shear effort (N/
m2) to move the particles of material g with a particular distortion speed (speed
gradient, (S-1)). Viscosity (h) is obtained as a result of the ratio between the cutting
effort and the speed gradient.
The measurement unit is the Poise (P), although in practice we use either its hundredth
part (cP) or mPa.s in the International System.
The relationship with static viscosity is as follows:
Dynamic V = Static V x density
Other concepts to bear in mind on dynamic viscosity measurements are:
Thixotropy: variation of viscosity with time. For instance: «Quick dry» glues and paints.
Newtonian liquids: Viscosity measurement does not depend on spindle/rpm combination.
Non-Newtonian liquids: Viscosity measurement depends on spindle/rpm combination.
Ctra. NII Km 585.1 Abrera 08630 (Barcelona) España
e-mail: [email protected] - website: http://www.jpselecta.es
(Sujetas a modificaciones sin previo aviso)
«L» model: no 1; no 2; no 3; no 4
«R» model: R2; R3; R4; R5; R6; R7
«H» model: R2; R3; R4; R5; R6; R7
R1 spindle is optional
Pag.: 13
(4 spindles)
(6 spindles)
(6 spindles)
Tel 34 937 700 877 Fax 34 937 702 362