Thermo Scientific APEX User’s Guide
Page 297
Note: A loop effect becomes greater in detectors having an aperture height greater than
five inches (125 mm) and a width greater than 12 inches (300 mm), as shown in the
figure below.
Loops as far as 3 ft (1 m) away may affect the operation of the detector, depending on
roller, bearing, frame materials, and on the quality of the contact. To avoid loop effects
due to these causes, the following steps are recommended.
•
All cross members and transfer plates should be welded or securely fastened.
•
Rollers cannot be secured, but should be isolated from making electrical contact.
Note: Only one side of each roller assembly needs to be isolated. Do not isolate both
ends.
Roller Isolation Methods
The materials generally used to isolate rollers are plastic and phenolic. Care should be
taken to ensure raw products do not come into direct contact with phenolic materials.
Listed below are several methods for isolating rollers to prevent loop effects.
Stub Shaft Method
With this design, the roller shaft does not continue through the roller. This separation
removes the electrical loop within the roller, as shown below.
Note: The roller must be non-metallic.
Содержание APEX 100
Страница 1: ...Thermo Scientific APEX Metal Detector User s Guide REC 4248 Rev K Part number 085381 English ...
Страница 10: ...Page 10 Thermo Scientific APEX User s Guide ...
Страница 78: ...Page 78 Thermo Scientific APEX User s Guide ...
Страница 110: ...Page 110 Thermo Scientific APEX User s Guide ...
Страница 258: ...Page 258 Thermo Scientific APEX User s Guide ...
Страница 270: ...Page 270 Thermo Scientific APEX User s Guide ...
Страница 282: ...Page 282 Thermo Scientific APEX User s Guide ...
Страница 310: ...Page 310 Thermo Scientific APEX User s Guide ...
Страница 319: ...Thermo Scientific APEX User s Guide Page 319 Appendix A Modbus Communications Card ...
Страница 320: ...Page 320 Thermo Scientific APEX User s Guide ...
Страница 324: ...Page 324 Thermo Scientific APEX User s Guide ...
Страница 340: ...Page 340 Thermo Scientific APEX User s Guide ...
Страница 367: ...Thermo Scientific APEX User s Guide Page 367 Appendix B IntelliTrack XR ...
Страница 368: ...Page 368 Thermo Scientific APEX User s Guide ...
Страница 402: ...Page 402 Thermo Scientific APEX User s Guide ...
Страница 404: ...This page intentionally left blank ...
Страница 414: ...This page intentionally left blank ...
Страница 430: ......
Страница 431: ......
Страница 432: ......
Страница 433: ......
Страница 434: ......
Страница 435: ......
Страница 436: ......
Страница 437: ......
Страница 438: ......
Страница 439: ......
Страница 440: ......
Страница 441: ......
Страница 442: ......