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| Brand | Roctest |
|---|---|
| Origin | Canada |
| Model | TPC |
| Output Options | Vibrating Wire (VW), 4–20 mA, 0–5 Vdc, Pneumatic, Fiber Optic |
| Construction | Hermetically sealed stainless steel housing filled with de-aired oil |
| Shape Options | Circular or Rectangular (for tangential/radial stress in shotcrete tunnel linings) |
| Mounting | Four integrated metal mounting rings |
| Temperature Sensing | Built-in thermistor |
| Environmental Rating | IP68 (VW version), Surge-protected (VW) |
| Compliance | ISRM Recommended Methods for Rock Stress Measurements |
| Stiffness | High (enabling embedment in soil/concrete), with peripheral grooves to reduce off-axis sensitivity |
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