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概览
ST350 应变传感器用于评估建筑的活载压力，例如桥梁、建筑物、起重机或大型的游乐园设施的活载压力。通过定制可与我们的数据采集器直接相连，对于结构/岩土数据监测系统是一款非常理想的仪器。
优势与特点
- Improved signal-to-noise ratio means higher-resolution measurements
- Rugged enough for harsh environments
- Pay for themselves with just a few uses
- Compatible with most Campbell Scientific data loggers
- Quick installation with minimal preparation
- Efficient, reliable, and highly accurate
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技术说明
The ST350 uses Wheatstone bridge circuitry, which converts small changes in resistance to an output voltage that our data loggers can measure. Its construction avoids the tedious and time-consuming effort required when using foil strain gages. This allows the ST350 to be installed within minutes on steel, concrete, timber, and FRP members.
产品规格
| Accuracy | ±2% (individually calibrated to NIST standards) |
| Force Required for 1000 με | ~76 N (17 lb) |
| Strain Range | ±2000 με |
| Sensitivity | ~500 με/mV/V |
| Circuit | Full Wheatstone bridge with 4 active 350 Ω foil gages, 4-wire hookup |
| Cable | BDI RC-187 (22 gage, two individually shielded pairs with drain; 15 ft length standard) |
| Material | Aluminum |
| Dimensions | 11.1 x 3.2 x 1.3 cm (4.375 x 1.25 x 0.5 in.) |
| Weight | 85 g (3 oz) |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR10X (retired) | ||
| CR200 (retired) | ||
| CR205 (retired) | ||
| CR206 (retired) | ||
| CR210 (retired) | ||
| CR211 (retired) | ||
| CR215 (retired) | ||
| CR216 (retired) | ||
| CR23X (retired) | ||
| CR295 (retired) | ||
| CR3000 (retired) | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) |
Additional Compatibility Information
Mounting
The ST350 is affixed to steel, pre-stressed concrete, or wood via two threaded mounting tabs and a tab jig. Alternatively, two C-clamps may be used to mount the sensor to steel. Attachment to reinforced concrete typically requires two threaded mounting tabs, a transducer extension, and an extension jig.
常见问题解答
ST350: 4
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Customers have reported using the ST350 in applications similar to this.
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Generally, the recommended maximum strain for the ST350 is approximately 1,000 microstrain because of real-world installation conditions. The gage itself is capable of a higher microstrain measurement. For information regarding microstrain limits, refer to the “Instructions for Using ST350 Strain Transducer Extensions on Reinforced Concrete Structures” section in Appendix A of the “ST350 Strain Transducer Instruction Manual.”
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Use the full-bridge instruction, BrFull(). An example program for the CR1000 can be found in the “Datalogger Programming” section of the “ST350 Strain Transducer Instruction Manual.”
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The ST350 is designed as a full-bridge strain transducer with four active elements that can be directly connected to a data logger (or a multiplexer connected to a data logger) without adding a completion module such as the 4WFBS350 or 4WFBS120.