Choosing between two used conveyor metal detectors for product inspection checkweighing usually comes down to confidence versus cost. Both units list the United States as country of origin, but they take different paths to the same job: the Lock Inspection Systems MET30+ is positioned as a tested, general-purpose conveyor metal detector at USD 2,399.00, while the Mettler Toledo Safeline Tablex PH-2 is a lab-removed conveyor metal detector at USD 1,500.00. The price difference is USD 899.00, and that gap shapes how much verification you can expect before the machine reaches your floor.
Quick verdict
For buyers who want a tested, general-purpose conveyor metal detector, the Lock MET30+ is the easier decision. For buyers who can run their own checks, the Mettler Toledo Safeline PH-2 costs USD 899.00 less and still powers on according to the description.
| Feature | Lock MET30+ | Mettler Toledo Safeline PH-2 |
|---|---|---|
| Listed price | USD 2,399.00 | USD 1,500.00 |
| Price bar | ||
| Country of origin | United States | United States |
| Condition | Used | Used |
| Model reference | Lock Inspection Systems MET30 | 4500922R (SAFELINE) |
| Title wording | Universal Metal Detector Conveyor Tested | Metal Detector and Conveyor |
| Description cue | General purpose | Powers on; believed working when removed |
Where each product wins
Lock MET30+: More verification from the start
The Lock's title explicitly includes "Tested," and its attributes describe the intended use as General Purpose. That combination is meaningful for a company that needs a single conveyor metal detector for varying products. The downside is price: it is USD 899.00 more than the Mettler Toledo unit.
Mettler Toledo Safeline PH-2: Lower listed price and a lab history
The Mettler Toledo unit enters the comparison at USD 1,500.00. The description says it was recently removed from a local lab, powers on fine, and is believed to be working when removed. The clear limitation is that it was not able to be tested further.
Product notes
Lock Inspection Systems MET30+ Universal Metal Detector Conveyor Tested
If a ready-to-use signal matters, this is the product to focus on. The Lock Inspection Systems MET30+ is listed at USD 2,399.00 and the term "Tested" appears directly in the title. The attributes also list the intended use as General Purpose, which makes it a broad fit for inspection lines that process more than one product type. The Lock Inspection Systems MET30 model reference appears in both the title and the attributes, so identification is straightforward. The trade-off is the listed price: at USD 899.00 more than the Safeline PH-2, it asks for more money in exchange for more upfront confidence. If that confidence is what your operation needs, the Lock MET30+ is the purchase to make.
Mettler Toledo Safeline Tablex PH-2 Metal Detector and Conveyor
The Mettler Toledo Safeline Tablex PH-2 is the lower-cost way into this decision. It is listed at USD 1,500.00, which leaves USD 899.00 on the table compared to the Lock. The description says the unit was recently removed from a local lab, powers on fine, and is believed to be working when removed, so a buyer starts with a clear baseline but not a tested guarantee. The model reference 4500922R and the SAFELINE type give the unit a specific identity within the Mettler Toledo Safeline family. The main limitation is the lack of further testing: you would be taking on the verification task yourself. For a maintenance team that wants to run its own checks, the Safeline PH-2 starts at a much lower listed price.
Final choice by use case
- Best for tested, general-purpose inspection: Lock Inspection Systems MET30+ Universal Metal Detector Conveyor Tested
- Best for lower listed price and self-verification: Mettler Toledo Safeline Tablex PH-2 Metal Detector and Conveyor
