Test Chain Instruction Manual (EN)

Test Chain Instruction Manual Instruction Manual PL-CMS001 October 1998 Rev 1.0

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T hank-you for purchasing Milltronics' products. We are committed to satisfying our customers' needs with innovative equipment that is designed for reliability and ease of use. Our products are distributed in 91 countries through a worldwide network of offices, representatives and distributors. We continually refine our processes to provide our customers with first rate sales information, engineering assistance and after sales service and support. In 1997, Milltronics established a new business division - Mass Dynamics - dedicated to sales and development of continuous weighing, acoustic sensing and motion sensing products.

This division will provide specialized support for these product lines. For further details on Milltronics' products and service, please contact us at one of the locations listed below for the office or representative nearest to you.

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General Information..............................................................................4 About This Manual.....................................................................4 About The Use Of Test Chains..................................................4 Technical Data And Specifications .....................................................5 Test Chain Selection ............................................................................8 Belt Scale’s Design Information:

................................................8 Installation.............................................................................................9 Installation And Field Run Of The Test Chain And Reel............9 Guidelines For Installation.................................................................10 Guidelines For Operation...................................................................11 Test Chain Reel Design Sheet ...........................................................13 Maintenance ........................................................................................14 Test Chain................................................................................14 Storage Reel............................................................................14 PL-CMS001 Test Chain Manual 3 TABLE OF CONTENTS

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About this Manual This instruction manual is intended to provide the basic guidelines for installation, operation and maintenance of the calibration test chain and storage reel compartment. About the use of test chains Although there are 4 common methods for calibrating a belt scale, only the test chain method will be discussed. • Purpose of test chain use in scale calibration. This method has been used extensively for testing mechanical belt scales and it is often used to calibrate high capacity electronic belt scales and weighfeeders that cannot be material tested.

The test chain is applied to the conveyor belt, secured at both ends enabling the chain to remain stationary over the weigh length. It rolls upon the surface of the moving belt conveyor to provide dynamic scale loading of a known weight value, which provides the calibration reference. • The advantages of utilizing a test chain are: The test load provided by a roller test chain will cause the surface of the belt to deflect in much the same manner as when material is on the belt, thereby simulating live material loading.

A much greater test load can be applied to high capacity belt scales and weighfeeders because most weighbridge designs can only accommodate a limited number of static weights applied to the suspension. This is especially important on systems that utilize mechanical weighing elements and lever systems, due to the need to calibrate the systems with the test load values close to the normal operating loads of the belt. • Some cautionary points to consider. The use of test chains require provisions to be made for accessibility to the top (load) side of the conveyor belt in the scale area.

Safety becomes an issue for the personnel working to place, secure and remove the test chains each time they are used. As test chains are infrequently used, the need for routine inspection and maintenance becomes important. They must be lubricated and repaired as necessary to ensure safe reliable service. Annual weighing and measuring to determine the correct and accurate load value is required to compensate for wear, tear and stretching of the test chain components. 4 Test Chain Manual PL-CMS001 GENERAL INFORMATION

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