概览
4WHB10K 为4线半桥测量提供桥臂电阻，该模块用于那些有10 kohm阻抗的传感器。
优势与特点
- Makes accurate measurement of 10-kohm, 4-wire half bridges simple
- Easy to install or remove
- Connects directly into data logger input terminals
- Compatible with most Campbell Scientific data loggers
图像
3D/CAD 文件：
相似产品
技术说明
4WHB10K Schematic
4WHB10K-to-Sensor Hookup
产品规格
| Used With | 4-wire half bridge measurements with a 10 kΩ resistance |
| Resistance | 10 kΩ (bulk metal foil) |
| Tolerance | ±0.01% (@ 25°C) |
| Maximum Temperature Coefficient | ±0.8 ppm/°C |
| Power Rating | 0.25 W (@ 70°C) |
| Dimensions | 1.5 x 1.5 x 2.7 cm (0.6 x 0.6 x 1.0 in.) for body with prongs |
| Weight | 6 g (0.2 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) | ||
| CR200X (retired) | ||
| CR206X (retired) | ||
| CR211X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR295X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Miscellaneous
| Product | Compatible | Note |
|---|---|---|
| CR9050 (retired) |
Additional Compatibility Information
Data Logger Considerations
The 4WHB10K uses two sequential differential analog inputs; the first differential channel must have an adjacent analog ground channel to accept the "ground prong" of the 4WHB10K. Not all data logger terminal strips have this sequence on all channels, so please check your data logger's wiring panel to confirm channel assignments, especially if you plan to use multiple Terminal Input Modules.
Newer CR10X Wiring Panels and the CR10XTCR Thermocouple Cover are deep enough to cover the data logger input channels with a Terminal Input Module attached; older CR10TCRs are not deep enough.
Programming
The 4WHB10K is measured either with CRBasic's BrHalf4W Instruction or Edlog's Instruction 9 (Full-Bridge with Excitation Compensation).
常见问题解答
4WHB10K: 2
-
These two voltage dividers can handle different maximum input voltages.
- The VDIV2:1 has a maximum input voltage of 10 V.
- The VDIV10:1 has a maximum input voltage of 50 V.
-
CR1000 含有模拟输入通道，其最大量程档是 ±5 Vdc 电压。要测量 12 Vdc 的电压，需要使用电压分压模块。最简单的形式是，由两个电阻桥臂所组成的分压模块。精密的差分电压分压模块，例如 VDIV10:1，可用于该目的。