Mechanical Set-Up For Pipeline Applications - Thermo Scientific APEX 100 User Manual

Mechanical Set-Up for Pipeline
Applications
The APEX detector is designed specifically for use in a pipeline application. If this system
was supplied complete with a framework, non-metallic throughput tube, and automatic
divert valve, it will require a minimal amount of adjustment. When a search head only is
provided, proper installation is critical. Correctly installed, the metal detector will
operate reliably for long periods without attention.
The customer is responsible for initial inspection of the equipment and site preparation.
It is essential that the customer place the equipment in the production or process line in
accordance with the guidelines below. The customer must assure that qualified service
personnel are available to make interconnections with other production equipment and
perform work at the installation site. A Thermo Fisher Scientific Products Customer
Service Representative is available to supervise installation and verify operation, as well
as train personnel assigned to operate and maintain the equipment.
APEX Installation Considerations
Customers who intend to install the APEX metal detector, should study the following
factors that can influence the detector's performance. The importance of studying this
section and taking note of the information given is very important. It has been proven
that faulty metal detector operation, such as random false alarm signals and undue
sensitivity to vibration, are usually due to incorrect installation of the metal detector or
some other factors external to the metal detector itself.
Location of the Detector
The APEX controls should be located to give easy access to the front panel. The
installation location of the display and/or electronics box should be the first
consideration.
Mounting the APEX
For trouble-free and reliable operation, it is very important that the APEX be correctly
mounted. The support structure for mounting the APEX must transmit a minimum
amount of vibration to the metal detector. This structure must be flat and parallel,
thereby minimizing possible twisting torques to the metal detector case, which can
distort the electromagnetic field and cause false triggering. While the APEX and the
support structure may remain in contact, nothing, including the product, must be
allowed to touch any part of the aperture, as this could cause wear of the aperture lining
and give random false alarms. Any pressure, torque, or electrical ground will cause the
APEX to misfire. Any support platform, or throughput pipe that passes through the
aperture must be completely free of all metal, and must not touch any part of the
aperture at any time.
Metal-Free Area
For optimum performance, non-moving metal should be allowed no closer to the
aperture opening than 1.5 times the smallest aperture height, measured outward from
the center of the aperture. Moving metal should be allowed no closer to the aperture
opening than 2.0 times the smallest aperture height, measured outward from the center
Thermo Scientific APEX User's Guide Page 307