11 - Stirring and Dispersing - HiTec Zang GmbH

Here you will find: 

� ViscoPakt ® Torque Measuring Stirrer Drive 

Stirring and Dispersing 

� ViscoTrol Control Module for Three Phase Stirrer Drive 

� Stirring Accessories (Stirring Blades, Lead-Throughs, Magnetic Couplings....) 

� Drives and Tools for Dispersing and Homogenisation 

HiTec Zang GmbH · Tel: +49(0)2407/910 100 · info@hitec-zang.de · http://www.hitec-zang.com 1

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Measuring Stirrer ViscoPakt ® 

The Visco-Pakt measuring stirrer is a strong stirring 

an torque measuring system with speed regulation 

and state-of-the-art torque measurement sensitivity. 

Fields of Application 

� System stirrer for automatic laboratory reactor 

� Identification of reaction phases 

� Detection of stirrer dissipation in the reaction 

calorimeter 

� Measurement of rheological material properties 

� Scale-up experiments 

� Process monitoring 

The drive unit requires only a fraction of the space 

needed by usual measuring stirrers, allowing more 

valuable space for the reactor head. Due to its 

compact construction, it also fits into a small 

apparatus, e.g. a 250 mL reactor system. The small 

dimensions of the drive were achieved by separating 

the stirrer from its control unit. The separate 

controller has a keypad and an LC display, which 

shows the torque and rotational speed. 

The measured torque is automatically corrected 

using the speed dependent “zero torque”. 

In many applications, ViscoPakt delivers important 

additional information. For polymerization and polycondensation, 

the initiation or completion of a 

reaction, which cause a change in the viscosity, can 

be read off and identified via the torque. 

The power dissipated from stirring, which is of 

interest for reaction calorimetry, can be determined 

from the torque and speed of rotation. 

As the design has no gearing, an extraordinarily 

large range of torque can be continuously achieved 

with no switching. 

Glass stirrers are protected from breaking by softstart 

and torque limiters. 

Characteristics and Functions 

� Powerful and compact 

� High measuring precision 

� High measuring sensitivity 

� Robust measurement technique 

� Measurement of rotational speed and torque 

� Wide and continuous range of rotational 

speeds 

� Smooth start-up, adjustable gradient 

� Automatic correction of the zero torque 

� Adjustable soft-start ramp 

� Adjustable rotational speed and torque 

limitation 

� Quick catch chuck 

� Low noise operation 

ViscoPakt rheo was developed for applications for 

which the exact torque, viscosity, or the dissipated 

energy and a precise keeping of the rotational speed 

are needed. 

The measurement sensitivity is impressive. 

Viscosity variations in the order of the viscosity of 

water are still resolved. 

30 Years of Excellence in Lab Scale Technology · Over 1.000 Products around the Laboratory Reactor

ViscoPakt ® 

The standard design is equipped with a simple 

torque output which reflects the viscosity's trends. 

Variations of the rotational speeds due to load 

fluctuations are electronically compensated. 

Technical data 


ViscoPakt model - 27 - 57 - 110 Unit 

Maximum torque 27 57 110 Ncm 

Resolution 0,07 0,1 0,2 Ncm 

Reproducibility 1,5 3 5 Ncm 

Minimum speed 150 150 150 rpm 

Maximum speed 2200 2000 2000 rpm 

Speed uncertainty 2 1,5 1,5 % 

Chuck size 1 - 10 1 - 10 1 - 10 mm 

Type of protection 

controlling device 

20 20 20 IP 


drive 

51 51 51 IP 

Approx. Weight 2 3 4 kg 

Motor Diameter 55 70 83 mm 

Length across axis 

(approx.) 

210 230 270 mm 

Extension 

diameter/length 

16 / 220 16 / 220 16 / 220 mm 

Max. viscosity 10.000 40.000 70.000 mPas 

Max. Mixing quantity 

(H2O)** 

15 30 50 Liter 

* Control Unit /Drive 

** Reference values for propeller stirrer in H2O 

Interfaces 

Analogue: 

Required rotational speed 0 - 10 V, 0/4-20mA 

Actual rotational speed (= required value or 0) 0 - 10 V, 0/4-20mA 

Actual torque value 0 - 10 V, 0/4-20mA 

The setpoint rotational speed can be pre-set via an 

analogue input or the serial interface. The torque 

and the setpoint rotational speed are issued via the 

analogue outputs and the serial interface. 

RS232: 

Send: Setpoint rotational speed 

Received: Setpoint rotational speed, actual torque value 

Delivery Scope Measuring-stirrer drive and control unit with 2.3 m cable 

Order Code Description Specifications 

IR-VIPA27 ViscoPakt-27 27 Ncm 

IR-VIPA57 ViscoPakt-57 57 Ncm 

IR-VIPA110 ViscoPakt-110 110 Ncm 

IR-VIPARS Optional RS232 Interface Setpoint rotational speed and actual torque 


4 

ViscoPakt ® -rheo 

The ViscoPakt-Rheo model series is equipped with 

precision-torque measuring. The zero torque, which 

depends on the rotational speed, is registered by an 

automatic calibration process and is used to correct 

the actual torque signal. This allows the on-line 

determination of the viscosity (via a calibration table) 

as well as of other rheological parameters. 

Technical Data 


ViscoPakt Model rheo - X7 - 16 - 27 - 57 -110 Unit 

Maximum torque 7 16 27 57 110 Ncm 

Resolution 0.003 0.01 0.02 0.04 0.08 Ncm 

Reproducibility 0.05 0.1 0.2 0.4 0.8 Ncm 

Minimum speed 40 40 40 40 40 rpm 

Maximum speed 3000 2200 2200 2000 2000 rpm 

Speed uncertainty 0.1 0.1 0.1 0.1 0.1 % 

Chuck size 1 - 10 1 - 10 1 - 10 1 - 10 1 - 10 mm 



20 20 20 20 20 IP 


drive 

54 54 54 54 54 IP 

Approx. Weight 0.9 1.7 2.6 3.9 6 kg 

Motor Diameter 70 45 55 70 83 mm 

Length above axis 

(approx.) 

250 245 250 255 295 mm 

Extension 

diameter/length 

16/220 16/220 16/220 16/220 16/220 mm 

Max. viscosity 5,000 6,000 10,000 40,000 70,000 mPas 

Max. Mixing quantity 

(H2O)** 

2 8 15 30 50 Litres 

* Control Unit /Drive 

** Reference values for propeller stirrer in H2O* 

Interfaces 

Analogue: 




Changes to the rotational speed which are caused 

by load fluctuations are registered by a digital 

revolution counter and are electronically regulated. 

The rotational speed can be pre-set via an analogue 

input or the serial interface. The actual rotational 

speed and the torque are issued via the analogue 

outputs and the serial interface. 

RS232: 

Send: Required rotational speed 

Received: Required rotational speed, actual rotational speed, actual torque value 



IR-VIPARHX7 ViscoPakt-Rheo-X7 7 Ncm 

IR-VIPARH16 ViscoPakt-Rheo-16 16 Ncm 



IR-VIPARH110 ViscoPakt-Rheo-110 110 Ncm 

IR-VIPARS Option RS232 Interface Setpoint and actual rotational speed and 

actual torque 


ViscoPakt ® -rheo+ 

The model series ViscoPakt-Rheo+ is based on 

most modern brushless drives. Consequently, they 

are absolutely maintenance-free and the friction 

moment caused by the brush is no longer existent at 

precision torque measurements. The speeddependant 

zero torque is captured in the course of 

an automatic calibration procedure and utilised for 

the correction of the torque signal. Herewith, it is 



Type ViscoPakt-rheo+ -40 -75 -150 -220 Einheit 

Maximum torque 40 75 150 220 Ncm 

Resolution 0,01 0,03 0,04 0,05 Ncm 

Reproducibility 0,1 0,2 0,3 0,4 Ncm 

Minimum speed 40 40 40 40 rpm 

Maximum speed 2200 2000 2000 2000 rpm 

Speed uncertainty 0,01 0,01 0,01 0,01 % 

Chuck size 1 - 10 1 - 10 1 - 10 1 - 10 mm 



20 20 20 20 IP 

Type of protection drive 54 54 54 54 IP 

Approx. Weight 1,5 2,5 3,5 5 kg 

Motor Diameter 43 87 87 87 mm 

Length above axis 

(approx.) 

200 180 180 210 mm 

Extension diameter/length 10 / 200 13 / 200 13 / 200 13 / 200 mm 

Max. viscosity 10.000 40.000 70.000 70.000 mPas 

Max. Mixing quantity** 15 40 60 80 Liter 

* Steuergerät/Antrieb 

** Richtwerte für Propellerrührer in H2O 

Schnittstellen 

RS232, RS485 interface with Modbus Protocol (opt.) 

Send: Rotational speed desired value 

Receive: Rotational desired/actual value, torque actual value 

Analogue: 




possible to establish the viscosity (per calibration 

table) and other rheological parameters online. 

Speed changes caused by load variations are 

captured by a digital speed sensor and electronically 

compensated. The speed can be predefined via an 

analogue input or the serial interface. The actual 

speed and the torque are issued via analogue 

outputs and the serial interface. 


Bestellcode Beschreibung 

IR-VIPARHP40 ViscoPakt-Rheo+-40 precision-stirrer actuator, 40 Ncm 




IR-VIPARHPRS485 Option RS485 ModBus Interface 

IR-VIPARHPUI Option Current and voltrage interface 


6 

ViscoPakt ® -mini-rheo-35 


The ViscoPakt-mini is a 

precision measuring stirrer 

disposing of an especially 

compact design. It is 

deployed where torques 

must be generated in most 

limited spaces. These are 

mainly small reactors with a 

nominal volume below 500 

ml with many mounted 

sockets at the same time, 

as such are frequently 

deployed for parallel 

syntheses. 

The ViscoPakt-mini, 

amongst other utilisations, 

is deployed in our LabKit 

and MultiLab parallel 

reactor systems. 

Interfaces 

Analogue: 

Order Code Description 

IR-VIPA-MINI-RHEO-35 ViscoPakt-mini-rheo stirrer drive, 35 Ncm 

Ministirrer 

The MiniStirrer is the economic 

alternative to the ViscoPakt-mini 

with a lower maximum torque 

and simple torque measurement 

(current measurement). 

It can be deployed everywhere 

where a qualitative torque signal 

is sufficient and relatively lowviscous 

substances are stirred. 


IR-MINISTIRR10 Mini-stirrer-10 stirrer drive 

HiTec-Zang naturally also offers all necessary 

accessories, e.g. flexible stirrer shafts, stirrer shaft 

protection, special stirrer receptacles, and also a 

wide array of mixing elements made of glass, high- 

Setpoint rotational speed 0 - 10 V, 0/4-20mA 

Actual rotational speed (= 

setpoint value or 0) 

0 - 10 V, 0/4-20mA 


RS232: 

Send: Setpoint rotational speed 

Received: Setpoint rotational speed, actual 

rotational speed, actual torque value 

ViscoPakt Type mini-rheo-35 Unit 

Maximum torque 35 Ncm 

Resolution 0.01 Ncm 

Reproducibility 0.1 Ncm 

Minimum speed 15 rpm 

Maximum speed 800 rpm 

Diameter 45 mm 

Length across axis 230 mm 

Interfaces 

Analogue: 

Setpoint rotational speed 0 - 10 V, 0/4-20mA 

Actual rotational speed (= 

Setpoint value or 0) 

0 - 10 V, 0/4-20mA 


ViscoPakt Type Mini-strirrer-10 Unit 

Maximum torque 17 Ncm 

Resolution 0.07 Ncm 

Reproducibility 0.5 Ncm 

Minimum speed 60 rpm 

Maximum speed 1900 rpm 

Diameter 50 mm 

Length across axis 195 

*only current measurement! 

mm 

grade steel PTFE and other materials. Our experts 

will gladly help you to arrange the mixing elements 

and stirrers that exactly accord to your requirements. 



ViscoTrol Control Unit for Three-Phase Stirrer Drive 

The ViscoTrol control units enable an electronically 

controlled variation of the rotational speed of three 

phase stirrer drives and the electronic collection of 

the torque. Due to this, adjustable gear units and 

and measuring shafts are no longer necessary. 

The standard ViscoTrol family meets simple 

requirements in regard to precision. 

Higher demands to precision are met by the 

ViscoTrol rheo family. 

Due to unsufficiant cooling when in low rpm mode it 

is recommended to adjust the motor via the set point 

of the control device or adding an additional cooler. 

ViscoTrol 

The control units dispose of a Start-Stop switch and 

a setpoint potentiometer for manual operation. 

Interfaces: 

Analogue Interfaces: 4...20mA, E = setpoint 

rotational speed, 

A = Torque and actual rotational speed 

RS485 interface with Modbus Protocol 

Digital Release 

Notice 

A MODBUS interface requires the option 

PNKMODBUS and a free RS485 interface at the PI. 

The activation via 4-20 mA requires an 4-20mA 

analogue output for the setpoint rotational speed, as 

Delivery Scope Control Unit with power cable. 


Performance 0.35 up to 2.2 kW 

Rotational Speed 1:250 (at sufficient 

Variation 

cooling of motor) 

Start Ramp Adjustable 

Torque Limiting Adjustable 

RPM Limiting Adjustable 

Resolution 

Torque Measurement 

5% (differentiated) 

Casing Protection 

Category 

IP54 

Power Supply Single phase supply 200 - 

240V 

Dimensions LxWxH 192x215x277mm 

well as respectively one analogue input 4-20mA for 

the actual rpm and torque. In addition, a digital 

output is required for the digital release. 


IR-VISCOTROL350 ViscoTrol350 control unit for three phase drives, 0,35 kW 


IR-VISCOTROL1100 ViscoTrol1100 control unit for three phase drives, 1,1 kW 


IR-VISCOTROL-MOT055 Asynchronous 0,55 kW motor for Viscotrol 


IR-VISCOTROL-MOT110 Asynchronous 1,10 kW motor for Viscotrol 



IR-VISCOTROL-FAN Additional fan for ViscoTrol asynchrous motor 

ZK-R-HI30-BK-IX-Y-01 ViscoTrol cable for LabManager/box, 4...20mA rotational speed set point and current value, 

digital disengange 

ZK-R-HI30-BS-R4-I-01 ViscoTrol cable RS485 


8 

ViscoTrol rheo 

The activation via 4-20 mA 

requires an 4-20mA 

analogue output for the 

setpoint rotational speed, as 

well as one analogue input 4- 

20mA for the torque The 

checkback signal of the 

actual rotational speed via the 

device-internal PFM-output 

requires an additional digital 

input. In addition, a digital 

output is required for the digital release. Notice: The 

deployment of the RS485 requires an additional 

RS485 interface module in the PI and a device 

component for binary protocoling. 

Note: For a MODBUS-interface the option 

PNKMODBUS and a single free RS485 at the PI is 

needed. 

Delivery Scope Control Unit (box) with power 

supply line 




IR-VISCOTROL350-RHEO ViscoTrol350 control unit for three phase drives. 0,35 kW 

IR-VISCOTROL550-RHEO ViscoTrol550control unit for three phase drives, 0,55 kW 

IR-VISCOTROL750-RHEO ViscoTrol750 control unit for three phase drives, 0,75 kW 


IR-VISCOTROL-MOT110 Asynchronous 1,10 kW motor for Viscotrol 

IR-VISCOTROL-FAN Additional fan for ViscoTrol asynchrous motor 

Cable 

Performance 0.35 to 0.75 kW 

Rotational Speed 1:250 (if motors sufficiently 

Variation cooled) 

Start Ramp Adjustable 

Torque Limiting Adjustable 

RPM Limiting Adjustable 

Resolution Torque 0.5% 

Measurement 

Casing Protection 

Category 

IP 20, IP54 at connection 

Power Supply 400V Rotating current 

Interfaces: 

Analogue interfaces 4...20mA, I = set point rpm, O = 

torque 

RS485 interface with Modbus RTU protocol 

Digital disengage 

Bestellcode Beschreibung 

ZK-R-HI31-BK-IA-Y-01 Cable for LabManager/box, rotational speed setpoint value, actual value torque actual value 

4...20mA., release via digital output, 3m 

ZK-R-HI31-BK-IP-Y-01 Cable for LabManager/box, rotational speed setpoint value, actual value torque actual value 

4...20mA., release via digital output, 3m 

Accessories for the ViscoPakt®-Family 

Cable 


ZK-R-HI02-BA-UP-Y-03 Cable for LabManager/box, Setpoint speed and actual value, 

torque current value, 0...10V, 3m 

ZK-R-HI02-BA-IP-Y-02 Cable for LabManager/box, Setpoint speed required and actual value, 

torque actual value, 0/4...20mA, 3m 

ZK-R-HI02-BS-R2-I-01 RS232 cable, Setpoint speed and actual value, 

torque actual value, On/Off, 3m 

Mounting Elements 

Bilateral mounting element for LabKit square 

aluminum profiles. 

In comparison to standard mounting elements with 

round rod, this element defines all axes of the stirrer 

drive. 


IR-VPMONT2 Mounting element for ViscoPakt stirrer drives on to LabKit aluminum profiles 


Stirrer Couplings 

These stirrer shaft coulings are made of POM, a 

mechanically stable light-weight plastic. The power 

transmission is conducted via a novel internally 

located construction with high-grade steel ball 

bearings. 

Standard version 

Version for magnetic stirrer heads 


The individual advantages are: 

� low-weight but highly stable construction 

� extremely low centrifugal forces due to the 

low weight 

� suited for stirrer shafts jacketed with glass, 

metal or PTFE 

� Rotational direction-independent (anti- and 

clockwise rotation equally possible) 

� version free of play (no vibration development 

or resonance) 

� suited for speeds up to 1200 rpm 

� high-power transmission up to 3 Nm 

� uncomplicated mounting of the stirring shaft 

in a Ø 8 mm and Ø 10 mm receptacle (clamp 

ring connection) 

� extra-long receptacle pin with Ø 10 mm, 

respectively 8 mm hexagon head, and a 

length of 90 mm, generates space (length can 

be shortened by user) 

� Temperature stability maximal +110°C and 

minimal -20°C, respectively without stress 


Stirring shaft receptacle, 

below 

8 mm and 10 mm 

Upper receptacle Ø 10 

Total length 190 mm 

Maximum axis offset 10 mm 


Stirring shaft receptacle Interior-square 

SW6 

Upper receptacle Female hexagon 

SW8 

Total Length 190 mm 

Maximum axis offset 10 mm 


IR-VIPARK-BF-POM Light-weight, highly stable stirring coupling made of POM, standard version for stirrer shafts Ø 

8mm or 10mm 

IR-VIPARK-VK-POM Light-weight, highly stable stirring coupling made of POM, for magnetic stirrer heads with interiorsquare 

SW5 for magnetic coupling 


10 

Bellows couplings 

In order to be able to bridge longer distances 

between the stirrer drive and stirring lead-through, 

we offer our flexible stirring shaft extensions. They 

consist of bellows couplings and high-grade steel 

shafts. 



IR-VIPARWV15019 Flexible stirring shaft extension made of 19 cm, shaft Ø 6mm, 2 bellows coupling max. 

high-grade steel 

150Ncm 



450Ncm 



450Ncm 



1000Ncm 



1000Ncm 

Magnetic stirrer heads 


For stirring shafts-Ø 8 mm 10 mm 

Square connection 

for coupling 

Female 

square 

adapter 

SW6 

With grinding 

Female 

square 

adapter 

SW6 

Guide Tube 

(glas) 

NS 29/32 

max. torque 50 Ncm 50 Ncm 

max. rpm 1500 rpm 1500 rpm 

max. media temp. 250°C 250°C 

With grinding 

NS 29/32 


IR-RDFMAG8 magnetic stirrer head for 8 mm stirring shafts 

IR-RDFMAG10 magnetic stirrer head for 10 mm stirring shafts 

Advantages 

� high performance power transmission 50 

Ncm 

� metal–free, no lubricants 

� easy-to-clean due to easy-to-access and 

smooth components 

� compact construction, low outer dimensions 

-Ø 35 mm, generates space on the lid 

� high rotational speed up to max. 1.500 rpm 

� high working temperature up to +250°C 

� excellent chemical stability (comparable with 

PTFE) 

� Suited for dry run 

� Sealed rotor prevents leakages 

� smooth, non-porous rotor prevents memory 

effects 

� extremely durable due to exchangeable 

durable wear parts 

Miscellaneous Accessories 


IB-SIND Inductive rotation speed monitor 3...300 Impulse /min, dimensions: M30 thread x 81 mm 

IR-VIPASFG Chuck size for glass stirrer with shaft Diameter 8mm, 2 bellows couplings 

IR-VIPARWS Stirring shaft protection, half-shell Adjustable length: 19 to 30 cm 

Special designs and further accessories available upon request. 


Stirrer Blades 

According to the desired application, some stirrer 

blades are more suited than others to perform the 

task. In laboratories close to production, it is often 

preferred to use the same stirrer type as in 

production in order to reach maximum comparability. 

Anchor Stirrer Propeller 

Stirrer 

Turbine Stirrer Cross-Arm 

Stirrer 


Plane Stirrer / 

Turbo Stirrer 

Slanted Blade 

Stirrer 

We are able to produce and supply stirrer blades 

according to your specifications made of stainless 

steel, glass and other materials. 

Stirrer blades out of metal can be provided with a 

thin glass coating in order to increase media 

compatibility. 

Impeller Stirrer MIG-Stirrer Toothed Disc/ 

Dissolver 

Stirrer 

Grating Stirrer Paddle Stirrer Spiral Ribbon 

Stirrer 

Stirrer type Recommended Application Speed Range Principal Viscosity Limit Diameter Ratio 

approx. rpm** Current approx. mPas (cSt) D/d 

Anchor stirrer In case of crust 

development, good 

exchange of heat, 

strong shear flow, 

medium to high-viscous 

20 ... 500 tangential 50,000 1.05 ... 1.1 

Propeller stirrer Good mixing effect, 

stirring of light solid 

matters, thickening 

agents 

200 ... 1800 axial 4,000 3 ... 6 

Pane stirrer Dispersing, dispersion 300 ... 1500 radial 1,000 2 ... 4 

(with blades)/ of gases, strong shear 

Turbo stirrer flow 

Impeller stirrer Good mixing effect 500 ... 1500 radial 10,000 1.5 ... 2 

MIG-stirrer high mixing effect, 

strong shear flow for 

low to medium 

viscosities 

200 ... 1000 axial 10,000 1.05 ... 1.5 

Toothed disc/ 

dissolver stirrer 

Particle break-up 1000 ... 3000 radial 100,000 2 ... 5 

Turbine stirrer Highly viscous media, 

lacquers, medium to 

high rotation speeds 

400 ... 2200 axial 200,000 3 ... 6 

HiTec Zang GmbH · Tel: +49(0)2407/910 100 · info@hitec-zang.de · http://www.hitec-zang.com 11

12 


Stirrer type Recommended Application Speed Range Principal Viscosity Limit Diameter Ratio 

approx. rpm** Current approx. mPas (cSt) D/d 

Cross-arm stirrer Shea flows in several 

fields, medium viscous 

liquids, good exchange of 

heat 

400 ... 800 tangential 10,000 1.1 ... 2 

Slanted blade good axial mixing effect , 500 ... 2500 radial 1,000 2.5 ... 3.5 

stirrer 

shear flow, prevention of 

layer build-up 

Grating stirrer Medium viscosity, strong 

shear flow, good 

exchange of heat 

200 ... 700 tangential 5,000 1.4 ... 2 

Paddle stirrer Low rotation speed, strong 20 ... 100 

shear flow, very sparing at 

low rotation speeds 

tangential 100 1.5 ...3 

Helical ribbon Powerful shear flow, for 50 ... 200 axial 50,000 1.1 ... 1.5 

stirrer 

high-viscous liquids, 

suspensions, pastes 

**with D of approx. 20 cm 

The stated values do strongly vary within literature 

by more than one order of magnitude and are used 

for a first orientation. Our project department will 

gladly help you to find a suitable stirrer-drive. 

To help you, we require the following information 


IR-RBL-rt-rd-ws-wl-wd Stirrer blade 

rt = stirrer type: 

AN Anchor stirrer 

PR Propeller stirrer 

SC Plane or turbo stirrer 

IP Impeller stirrer 

MI MIG-stirrer 

ZA Toothed disc stirrer 

TU Turbine stirrer 

KR Cross arm stirrer 

ST Slant blade stirrer 

GI Grating stirrer 

BL Paddle stirrer 

SP Spiral stirrer 

rd = blade diameter in mm (d) 

ws = material: 

ES Stainless steel 

EG Glass coated stainless steel 

GL Glass 

wl = shaft length 

wd = shaft diameter 

Ordering example: 

Anchor stirrer of glass, diameter 15 cm, shaft 

diameter 10 mm, shaft length 30cm 

Order code: IR-RBL-AN-150-GL-300-10 

from you: 

Stirrer type used, rotation speed, viscosity (or 

comparative information like water, motor oil, 

honey ...), mixing pot D, used stirrer D. 

Projecting Aide: 

Estimation of Viscosity 

Material Viscosity in mPas 

approx. at 20 ° C 

Acetone 0.33 

Alcohol 0.6 

Benzene 0.65 

Water 1 

Liqueur 3 

Condensed milk 7,5% 12 

Condensed milk 10% 45 

Olive oil 80 

Edible oil 85 

Apple juice concentrate 300 

Egg liqueur 600 

Yogurt 900 

Glycerine 1,500 

Honey 2,000-10,000 

Mustard 11,000 

Print colours 100,000 – 100 Mill. 



ViscoGraph – Automation of Stirring Tests 

ViscoGraph allows the automation of stirringtechnological 

tests with the ViscoPakt Torque 

Measurement Stirrer. 

The Programme enables: 

� Measurement of the torque in dependency of the 

speed 

� User-defined Torque Profiles 

� Measurement of the Viscosity 

� Zero Torque Calibration 

With the buttons on the left, it is possible to call up 

the various functions of ViscoGraph. The current 

values of the test period, rotation speed etc., are 

presented in the view boxes. 

The diagrams present the procedure of speed and 

torque via the time. 

The speed profile can be defined via up to 10 

sampling points: 

it is possible to select for each speed sampling point, 

if the speed is approached via a jump or a ramp: 

The data is stored in the *.csv format and can 

undergo further processing with programmes such 

as MS-Excel. 

The measurement system can be extended by 

further measurement variables with the help of the 

digital measuring amplifier. 

The additionally captured measurement curves 

receive an own Y-axis in the diagram. 


SL-VISCOGRAPH ViscoGraph Control Software for automated Operation of ViscoPakt Measuring Stirrers 

SL-VISCOGRAPHAI ViscoGraph Control Software Upgrade for Voltage Measurement with IL-AINAMP1D 

SL-VISCOGRAPHPT ViscoGraph Control Software Upgrade for Temperature Measurement with I IL-PTAMP1D 

IL-AINAMP1D Digital Measuring Amplifier for -10...+10V, 0/4...20mA, RS232 V24 /RS485 Interface 

IL-PTAMP1D Digital Measuring Amplifier for Pt100 Four-Wire Technology, RS232 V24 /RS485 Interface 

IL-NGSAMP1D-SN Power supply for digital measuring amplifier HK-GRADOAMP1D, HK-AINAMP1D, HK-PTAMP1D 

HC-USB232 USB to RS232 converter 

Customer-specific adjustments and extensions are possible. 


14 


Dispersing and Homogenising 

Drives 

These high-performance drives for laboratory 

applications meet all requirements to modern and 

compact laboratory drives and represent a 

guarantee for safe and successful working in the 

laboratory. 

Together with the accessories, you already dispose 

of a wide application range: 

� Homogenisation 

� Dispersing 

� Emulsifying 

� Suspending 

This can be utilised for the preparation of analyses 

as well as in reactor acceleration. 

The rotational speed of the drives can be adjusted 

continuously up to 35,000 rpm. 

The exchange of tools is fast and uncomplicated 

with the patented tool receptacle system. 

Tools 

The tools consist of rotor and stator. The rotor 

geometry generates a strong pumping effect. Due to 

this, the media is suctioned into the operational 

range between rotor and stator. Here, high 

frequency vertical and horizontal pulsations are 

generated. Due to the high exit speeds, ultrasonic 

frequencies are generated at the stator slits. This 

leads to cavitation. 

A balanced interaction between shear forces and 

percussion effects transfers the the liquid media 

intended for processing into the finest state. This 

significantly shortens process periods and reduces 

the heat input. 

The tools are made of acid-resistant high-grade 

steel 316L. They can be sterilised and are 

autoclaveable. 

The special shaft geometry enables fast tool 

exchange. PTFE rings prevent the medium from 

rising into the shaft tube. 

Drive 350 Watt Drive 1400 Watt Tool 


IR-DISPANTR350 Drive 350Watt, up to 35,000 rpm, for dispersing tools 




IR-DISPWZ040 Dispersing tool with quick coupling, diameter 4 mm 

IR-DISPWZ063 Dispersing tool with quick coupling, diameter 6.3 mm 

IR-DISPWZ140 Dispersing tool with quick coupling, diameter 14 mm 

IR-DISPWZ200-G Dispersing tool with quick coupling, coarse, diameter 20 mm 

IR-DISPWZ40-F Dispersing tool with quick coupling, fine, diameter 20 mm

11 - Stirring and Dispersing - HiTec Zang GmbH

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