Inverting The Reject Function (Reject 1) - Thermo Scientific APEX 100 User Manual

Resetting the Latching-Reject Function
1) When the latching-reject function is enabled and the APEX detects a contaminated
unit of product that must be manually removed from the conveyor, the following
screen appears in the detector's display panel.
Reject Latched
2) Remove the contaminated product from the conveyor.
3) Clear the warning screen by pressing the Go button. The detector is now ready to
start analyzing your products.

Inverting the Reject Function (Reject 1)

In most APEX set-ups, products are rejected whenever metal is detected. The inverting-
reject function, however, allows you to reject a product whenever metal is not detected.
You must have a photo eye installed for this function to work.
Inverting Reject
Example
Imagine you are a breakfast-cereal manufacturer running a conveyor application, and
every packet of cereal must go out containing a small plastic children's toy. The toy
manufacturer has hidden a small strip of (child-safe, non-toxic) metal inside each toy,
allowing you to set the inverting-reject function, so that packets of cereal not containing
metal are rejected. (In this example, as a precaution, the packets of cereal were tested
for the presence of metallic contaminants immediately up-stream, that is, just before
the toy was added to the product.)
Thermo Scientific APEX User's Guide Page 123