When metal contamination can halt a packaging line, the detection system you choose matters. The Safeline SL1500 metal detector, offered by ND Industrial Surplus, pairs a stainless conveyor with a pneumatic reject, making it a candidate for product inspection checkweighing operations that need a used, ready-to-configure unit.
Quick Verdict
The Safeline SL1500 is a used industrial metal detector with a 10-3/4\" tall by 13-3/4\" wide aperture, a 12\" wide conveyor that is 6 feet long, and 6\" adjustable sides on the infeed side. Its pneumatic cylinder reject and all-stainless frame on locking casters suit facilities that want mobility and automated rejection. At USD 18,999.00, it is a significant investment for a used unit, so the decision comes down to whether the listed detection performance and conveyor dimensions fit your specific line.
Who It Suits
This SL1500 fits buyers who already run a checkweighing or inspection setup and need a metal detector with a conveyor and pneumatic rejection built in. The 110V variable speed drive works in facilities with standard power. The locking casters make it possible to reposition the unit, and the stainless frame fits washdown-oriented environments. The pneumatic reject cylinder is helpful for automatically pushing contaminated product off the line, reducing manual sorting.
The listed detection levels are 1.5mm ferrous, 1.5mm non-ferrous, and 2.0mm stainless steel. If your product inspection checkweighing process requires catching ferrous or non-ferrous metal at that scale, this detector is aimed at exactly that range. If your tolerances are tighter than 1.5mm, this may not be the unit for you.
What Stands Out From the Listed Details
Several concrete details set this SL1500 apart. The aperture size-10-3/4\" tall by 13-3/4\" wide-defines the maximum product envelope, so you can compare it against your package dimensions before committing. The conveyor belt is 12\" wide and 6 feet long, which gives a reasonable inspection surface. The 6\" adjustable sides on the infeed side help guide product into the aperture, which is a practical addition for keeping items centered.
The pneumatic cylinder reject is another meaningful feature. Instead of just alarming, the unit can physically push rejected product off the line, which is valuable for automated production. The all-stainless frame and locking casters add durability and mobility, both of which are worth having in a busy packaging environment.
Meaningful Trade-Offs
The main trade-off is that this is a used unit, and the price is USD 18,999.00. You are getting a Safeline brand model, but there is no mention of a warranty or service agreement in the listing. The 110V power requirement is common, but you should confirm that your facility's outlets and electrical load can handle the unit before purchase.
The detection thresholds are specific: 1.5mm for ferrous and non-ferrous, and 2.0mm for stainless steel. That means smaller metal fragments may not be detected. Also, the conveyor length of 6 feet may be longer than some compact lines need, while the 12\" belt width could be narrow for very wide product flow. Make sure your product sizes fit comfortably within the 10-3/4\" height and 13-3/4\" width aperture.
Bottom Line
The Safeline SL1500 from ND Industrial Surplus is a solid used option if your product inspection checkweighing line needs a stainless conveyor, pneumatic reject, and detection at the 1.5-2.0mm level. The adjustable sides, locking casters, and variable speed drive add flexibility. Just confirm that your product dimensions fit the aperture and belt width, and that your power setup matches the 110V requirement. If those align, this SL1500 offers a clear path to automated metal detection without the cost of a new system.
