The touch ball is made of a “semi-static conductive” material with a surface resistivity of 10⁷ Ω – 10⁹ Ω, ensuring slow and spark-free discharge, thereby preventing safety hazards caused by electrostatic ignition.
Compared to models PS-A2 and PS-A3, the PS-Y Human Body Static Leakage Alarm features a simpler structure, making it more cost-effective and practical.
Performance Features:
Product Certifications:

| Parameter | SD-Y | PS-A3 | PS-Y | PS-E |
|---|---|---|---|---|
| Explosion-proof rating | Ex ib IIC T4 Gb | Ex ib IIC T4 Gb | Ex ib IIC T4 Gb | None |
| Product height | 1.5m | 1.1m | 1.1m | 1.1m |
| Ball diameter | 90mm (aluminum alloy) | 80mm (aluminum alloy) | 90mm (aluminum alloy) | 90mm (aluminum alloy) |
| Surface resistivity | 1×10⁷ ~ 1×10⁹ Ω | 1×10⁷ ~ 1×10⁹ Ω | 1×10⁷ ~ 1×10⁹ Ω | 1×10⁷ ~ 1×10⁹ Ω |
| Pipe diameter | 51mm (stainless steel) | 70–140mm (stainless steel) | 38mm (stainless steel) | 51mm (stainless steel) |
| Ground wire length | 2m | 2m | 2m | 1m |
| Alarm method | Audible + visual alarm | Audible + visual alarm | Audible alarm only | None |
| Static voltage display | Non-contact detection, quantitative display | Contact detection, quantitative display | Contact detection, quantitative display | None |
| Other features | - Non-contact remote detection- Independent hazardous power isolation- Data networking, static object detection- Grounding reminder and voice broadcast- Grounding status display- Static discharge via conductive object | - Classic model, widely used- Integrated touch ball and alarm- Static resistance detection- Static voltage display | - Classic model, market-proven- Static discharge- Ground circuit detection- Audible alarm- Static discharge via conductive object | - Aluminum alloy touch ball, safe to touch- Stainless steel pipe, sleek and easy to clean |