I can’t see why a narrow beam gives rise to false readings , you need to explain better . If you think about it wide beam sensors close together may over lap making it hard to discriminate between beam breaks . A narrow beam is what you want .
I can’t see why a narrow beam gives rise to false readings , you need to explain better . If you think about it wide beam sensors close together may over lap making it hard to discriminate between beam breaks . A narrow beam is what you want .