1001617 Rotary viscosimeters

INTRODUCTION 
Rheology is the study of the effects experimented in a substance when a mechanical force is applied on a it (flow and deformation) under different external conditions. It is used to describe the consistency of different products and is normally defined by the components: viscosity and elasticity. Measuring viscosity is determined by the tangible force required to displace the materials particles with a specific deformation-flow i.e. velocity. The relationship between the tangible force and the deformation flow obtains the viscosity result. Ambient conditions such as temperature and pressure also have an effect on viscosity. The measurement of viscosity is not just limited to the research laboratory, it has progressively entered the field of industrial quality control.

PRINCIPLES OF VISCOSITY 
These instruments operate by means of a cylinder or disk (spindle) that is submerged into the material to be analysed and by measuring the resistance of the substance at a selectedknownspeed.This resistanceresults is the measurementof theviscosityaccordingtotheflow characteristicsof thereferencespindle; theinstrumentcalculates the result and directly displays the viscosity that is reported incP (CGS) or mPa-s (SI). 
A widerangeof viscositycanbe measuredusingviscometers thatareequipped withdifferent typesof spindlesandspeedranges.Thedesignof thespindlesandtheprincipals of measurement principles are regulated by ISO 2555 and ISO 1652 standards. All spindles are made of AISI 316 stainless steel. Each spindle can be identified by a letter and a number.

FEATURES 
L.C.D. display of parameters and results: 
-Selected speed . . . . . . . . . . . . . . . . . . . . . . .r.p.m. 
-Selected spindle. . . . . . . . . . . . . . . . . . . . . . . . .S.P. 
- Viscosity result . . . . . . . . . . . . . . cP (mPa-s) or cSt. 
- Base scale percentage . . . . . . . . . . . . . . . . . . . .%. 
-Sample temperature: . . . . . . . . . . . . . . . .degree or ° F. 
Auto alarm in the case of any fault being detected. Off scale detection and indication by an audible and visual signal. 
Step controlled speed to prevent spindle vibrations. 
Velocity from 0,1 to 100 r.p.m. 
Mains power surge protection. 
RS232unidirectional interface,downloadto a computer.

TECHNICAL DATA 
Precision: ±1% base scale. 
Repeatability: 0.2%. 
Supplied complete with: 
-Anti shock carry case. 
- Main unit. 
-Support base. 
-Spindle protector. 
-Spindle support. 
-Set of spindles (model dependant) 
- Temperature prove 

DIGITAL THERMOMETER 
Temp range:
- from 0.0 degree to + 100.0 degree (+ 32.0 °F to + 212.0 °F). 
- Resolution: 0.1 degree (0.1722 °F). 
- Precision: ± 0.1 degree.

SELECTION TABLE 
Standard measuring range of the viscometers, without additional 
accessories

Part no:1001617
Model:ST-2020 R
Units:centiPoise (cP)
Standard spindle:R2 to R7
Speed range r.p.m.:0,1 to 100
Measuring range:20 to 40.000.000 cP
Temperature range degree:0,0 to 100,0
Power requirement:115/230V to 12VDC 1.2A
Power:15 W
Weight:5 Kg