Glas Col 2007 - Lasalle Scientific Inc.

Stirrers - G. K. H. Stirring SystemsST20 STIRRING SYSTEMThis powerful stirring system has a totallyenclosed, 1/8 hp, cool, quiet-running,permanent-magnet motor in direct- and geardrivemodels with torques from 3.1 lb.-in.(3.57 kg-cm) to 96 lb.-in. (111 kg-cm). Itprovides a stirrer with more power and aselection of speed ranges up to 2,500 rpmwith a continuously variable speed control.The ST20 stirring system is furnishedcomplete with motor and mounting bracket,controller, and the following accessories:099D A260100 3-jaw, keyless chuck andarbor for ST20N andST220N only099D A260200 3-jaw, keyless chuck andarbor for ST20 gearedmodels099D A260106 propeller100D LC300 heavy-duty 90° clampLab stand 099D A130150 is recommendedto mount the ST20. See the following pagesfor these and other accessories.SpecificationsLab bench case: 8"w x 6"d x 3.38"hMotor bracket: 4.5"w x 4.5"d x 9.5"h, with8.5” rodCatalogNumber DescriptionInputVoltageMaxrpmTorquelb-inTorquekg-cmTorqueNmProductWeight(lbs)099D ST20N Single-shaft motor, direct drive 120 2,500 3.1 3.57 .34 21.0099D ST2004 Single-shaft motor, 4:1 gearmotor 120 660 6.0 6.90 .66 22.0099D ST20 Single-shaft motor, 9:1 gearmotor 120 266 21.0 24.20 2.31 22.0099D ST2021 Single-shaft motor, 20:1 gearmotor 120 125 46.0 53.00 5.06 22.0099D ST2044 Single-shaft motor, 44:1 gearmotor 120 57 96.0 111.00 10.56 22.0099D ST220N Single-shaft motor, direct drive 240 2,500 3.1 3.57 .34 21.0099D ST22004 Single-shaft motor, 4:1 gearmotor 240 660 6.0 6.90 .66 22.0099D ST220 Single-shaft motor, 9:1 gearmotor 240 266 21.0 24.20 2.31 22.0099D ST22021 Single-shaft motor, 20:1 gearmotor 240 125 46.0 53.00 5.06 22.0099D ST22044 Single-shaft motor, 44:1 gearmotor 240 57 96.0 111.00 10.56 22.0STIRRERSStirrers - G. K. H. Stir-TestersStir-Testers● Actual speeds are displayed and maintained by a synthetic tachogenerator. (Speed is kept withinless than 1% of the base speed from no-load to more than 100% of full-load regardless of AC linevoltage fluctuations of ±10%.)● Viscosity measurement is easier thanks to a controller with a digital readout switchable betweenspeed and torque.● Data on shear stress, shear rate, velocity gradients, and viscosity is accumulated easily withexternal DC multi-volt signals for speed and torque (for strip or X-Y recorders) available throughan output port on the rear of the control.● Operator convenience and safety is increased with cord connections between drive motors andcontrols to allow control placement away from hostile environments.56