Kershaw Instrumentation, Inc

Kershaw
Instrumentation, Inc.

Phone: 1-800-571-4657
Fax: 1-856-467-2341

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LITHOBREAK TESTER MODEL LB-2000
INTRODUCTION:
Kershaw Instrumentation Inc. is proud to introduce a new product for the year 2001. This tester includes the following features.

A metal drive roller located in the center of the drive train.
A rubber distribution roller mounted over the drive roller to distribute the ink during the test.
A rubber "2 section" roller located under the drive roller to perform the test.
An air cylinder is mounted on each end of the 2 rubber rollers to control the nip pressure. Pressure gages indicate the pressure at each end.
A regulator is supplied with each of the 4 air cylinders.
A variable speed drive motor that will drive the roller chain from 0-1200 RPM. A digital speed readout indicates the drive roller speed in RPM.
Removable fountain trays under each of the 2 roller segments.
All of the electronics and controls are housed in a stainless steel cabinet.

PRICE: $8,900.00
DEL: Please call

AUTOMATIC VISCOMETER MODEL AV-2000

INTRODUCTION:
Kershaw Instrumentation Inc. is proud to introduce their newest test instrument, the VS-2000 automatic Viscometer. Kershaw has been producing the manual Falling Rod Viscometer for a number of years with great success, thus has the expertise to produce the precision rods and collars.

This instrument features a motor driven crosshead which travels vertically. This crosshead supports a motor to rotate the test rod. The test rod is connected to the motor via a quick disconnecting chuck which will allow the operator to remove the rod for cleaning purposes.

The collar is mounted on a load sensor which is connected to a stationary support. The load sensor monitors the forces applied to the collar during the test. These forces are generated by the shearing action of the ink applied to the rod as it is forced through the collar.

A temperature sensor is located in test collar to measure the sample temperature during the test. A temperature controlled cabinet encloses the instrument to control the ambient temperature surrounding the test instrument. A temperature sensor monitors this ambient temperature to insure that the testing is done at the proper temperature.

The tester is equipped with a PC which operates all of the test functions of the instrument, monitors all the sensors, compiles the data, and generates reports and files.

THE COMPUTER:
The software supplied with this instrument has been designed to work with any "Windows platform".The system will generate a data base for the tests and the test data along with a graphic and/or tabular report of the test results.If the user wishes to incorporate the test data into an existing software system, the test files generated by the AV-2000 can be moved to most Windows operating systems that are currently being used in your laboratory such as a spread sheet, wordprocessor or database.

MAINTENANCE:
As in any test instrument there is a required amount of maintenance to keep the machine running at its optimal performance. This instrument has been designed utilizing standard industrial components thus providing for ease of service and availability of parts. Most of the components utilized in the design of this tester can be easily changed by the operator in the field.

Calibration of the AV-2000 can be performed by the operator using the calibration procedures supplied, or can be done by a factory representative if desired. Calibration intervals are to be determined by the operator depending on the amount of usage and accuracy requirements. Calibrating the instrument once a year is suitable for most applications.The calibration procedure is a step by step process which involves entering data into the computer while making some adjustments on the curcuit boards.

There is no software maintance required to operate this instrument. Once the system is in service the operator is free to choose the software service requirements.

PROJECT SETUP:
The first thing that the operator must do is to enter some test set up parameters. Once these test parameters have been entered, the PC will insert them into the database under the "project name" for future use. This feature allows the operator to have many different test procedures [projects] on file if desired. If the operator has different types of inks, or different test requirements from their customers, the database will allow them to build as many different tests as required, then simply select the proper project before each test. An example of a typical "project" is as follows:

Project Name : XYZ-1234
Number of Predrops: 2
Rotate the Rod during Predrop ? : Yes
Predrop Rotation Speed [RPM] : 10
Number of Data Sets: 3
Number of Drops/Data Set: 3
Speed of 1st Data Set: 8 Seconds
Speed of 2nd Data Set: 5 Seconds
Speed of 3rd Data Set: 3 Seconds
Ambient Temperature Required: 30°C
Temperature Deviation: ±1°C
Rotate the Rod During the Test ?: Yes
Test Rotation speed [RPM]: 20

OPERATION:
The operator must first apply the proper amount of ink to the rod using the volume meter supplied with the instrument. Next he will close the instrument cabinet to stabilize the ambient temperature.

Next he/she selects the proper project from the project data base, enters a test name, and has the option to enter any comments about the test he/she is about to xecute. Next the operator commands the PC to start the test.

Using the example shown above [Project Name XYZ-1234] the system will operate as follows:
Predrop: First the PC will check to see if the ambient Temperature surrounding the instrument is at the specified temperature of 30 ±1°C. If the temperature is satisfied, the PC will now begin the predrop process by rotating the rod at 10 RPM while it lowers the rod thru the collar. When the rod reaches the bottom, the rod wiping paddles located above the collar will close to wipe the rod and the rod will be raised to the start position thus cleaning the rod. Once the rod reaches the top, the paddles will open. The predrop procedure will be repeated as per the Project setup parameters.When the predrop process is complete the PC will begin the test.

First Data Set: The PC will lower the rod at a rate of 12.5mm/sec [100mm/8 seconds] through the collar. The load sensor will measure the force exerted on the collar and the temperture sensor will measure the temperature of the collar during this process to determine the 1st set of data points.Once it reaches the bottom, the paddles will close, the rod will rotate at 20 RPM and the rod will raise to the start position. When it reaches the top, the paddles will open, the rotation will stop and the system is ready for the next drop.

This process will be repeated 2 more times to generate a total of 3 drops for this Data Set.

Second Data Set: The PC will lower the rod at a rate of 20mm/sec [100mm/5 seconds] through the collar as it repeats the process 3 times as described above.

Third Data Set: The PC will lower the the rod at a rate of 33.3 mm/sec [100mm/3 seconds] through the collar as it repeats the process 3 times as described above.

When all of the data has been acquired by the PC, the viscosity and yield values will be calculated using the fall times, forces, and collar temperature data. The operator will now have the option to print the results out in a graphic and/or tabular report format, and the test data will be saved in the data base under the test name. The project name, and any test comments entered by the operator will be saved in this file for future reference.

The system is now ready to begin the next test.

PRICE AND DELIVERY SCHEDULE:

Price: T.B.D.
Del: 3-4 Weeks once the unit is in production **
Production Schedule: Early Summer 2001 **
FOB: Swedesboro New Jersey

We expect to have some systems available for evaluation late Spring 2001. Please call us to arrange an appointment to evaluate this instrument.

Thank you for your interest in this product. If you have any questions regarding our products and service please call or fax us.