What is an External Test Light System?
An optional feature offered with each FLAMEX Spark Detection System is an External Test Light System. This feature is used to test the responsiveness of a Spark Detector(s) in each zone. A Test Light looks very similar to a Spark Detector and mounts to the duct in the same manner however instead of being an IR sensor, it is an IR emitter. It is used to simulate spark activity from the opposite side of the duct from a mounted Spark Detector (and external from the detector being tested). The advantage of testing in this manner is that it is a true test of detector responsiveness because it is done during normal operation and takes into account the actual material flow through the duct. Because the test is “through the lens” it will alert personnel of any obscuration of a Detector caused by material build-up. External Testing is far superior to internal testing which is performed inside the detector being testing and therefore does not take into account material build-up on the lens or th
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