DUCIS offers four series of bottom dead center monitors (slug detectors) to meet every need, from conventional press machines to ultra-high-speed, ultra-precision stamping systems. Choosing the right product series is key to effective die protection and cost optimization.
This article will provide a detailed comparison of the 4 main product series: SD-40x, SD-41x, SD-82x, and SD-90x to help you get an overview and make the most accurate choice.
📊Overall Comparison Table
| Parameter | SD-40x Series (Standard) | SD-41x Series (Advanced) | SD-82x Series (Ultra-Precision) | SD-90x Series (Premium) |
|---|---|---|---|---|
| Resolution | 1 µm | 1 µm | 0.1 µm | 0.1 µm |
| Response Speed (Max) | 1200 S.P.M | 1200 S.P.M | 4000 S.P.M | 4000 S.P.M |
| Average Value Calculation | First 4 strokes | First 6 strokes | N/A (Uses 1st Bound) | Selectable (Mean / Absolute) |
| Key Feature | Basic, effective protection | More stable average value | "1st Bound Detection" Function | "Early Detection" Function |
| Models (Channels) | SD-401 (1), SD-402 (2) | SD-411 (1), SD-412 (2), SD-414 (4) | SD-822 (2), SD-824 (4) | SD-902 (2), SD-904 (4) |
🔧Detailed Analysis of Each Series
1. SD-40x Series (Standard)
This is the basic series with 1µm accuracy and 1200 SPM speed. The machine takes the first 4 strokes as the average value. Suitable for conventional press machines, not requiring excessively high speeds, providing effective die protection at a reasonable cost.
2. SD-41x Series (Advanced)
Similar to the 40x series in accuracy (1µm) and speed (1200 SPM), but improved by taking the first 6 strokes as the average value, helping the standard value to be more stable. This series also has a 4-channel option (SD-414).
3. SD-82x Series (Ultra-Precision)
A technological leap. 0.1µm accuracy and 4000 SPM speed. The "1st Bound Detection" feature allows slug detection even on dies with high spring compression, where slugs are pressed thin at BDC.
4. SD-90x Series (Premium & Comprehensive)
The flagship series with 0.1µm accuracy and 4000 SPM speed. Includes all premium features: digital display, Mean/Absolute value options, and 2 ES expansion channels. Notably, it has an "Early Detection" function for soft materials (<0.5mm) like copper.
💡Conclusion: Which Series to Choose?
The choice depends on 3 main factors: Press machine speed, accuracy requirements, and the type of material being stamped.
- •Conventional Press (< 1200 SPM): Choose the SD-40x Series or SD-41x Series (if more channels or a more stable average value is needed).
- •High-Speed Press (< 4000 SPM): Must use the SD-82x Series or SD-90x Series.
- •Stamping Soft, Thin Materials (copper <0.5mm): Prioritize the SD-90x Series with its "Early Detection" feature.
- •Dies with Very High Spring Compression: Prioritize the SD-82x Series with its "1st Bound Detection" feature.
