适用于各种领域
概览
105E是用来测量土壤温度的传感器。
优势与特点
- Junction is electrically isolated from the soil, thereby avoiding measurement errors due to differences in ground potential
- Compatible with most Campbell Scientific data loggers
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技术说明
105E 包括一个屏蔽的24-AWG,E型热电偶线。其连接感应点与土壤电隔离，可避免由于地面电位不同而导致的测量错误。
E型热电偶由镍铬合金线和康铜丝组合而成。不同温度的热电偶测量端与热电偶参比端产生的电位差即为电压电势。因此，可通过测量一端连接的两根导线产生的电位差来确定温度。热电偶电压电势的大小与温度差相关。
热电偶温度测量要求测量参考温度，我们许多的数据采集器接线面板内置温度传感器，可以测量参考温度。
产品规格
| Type | Chromel-Constantan |
| Typical Output | 60 μV/°C |
| Accuracy | Refer to the Thermocouple Measurement section in the data logger manual. |
| Operating Temperature Range | -55° to +125°C (of TPE outer jacket) |
| Probe Diameter | 0.8 cm (0.3 in.) |
| Plug Dimensions | 1.8 x 3.3 x 1.0 cm (0.7 x 1.3 x 0.4 in.) |
| Weight | 90 g (0.2 lb) with 3.05-m (10-ft) cable |
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 |
|---|---|---|
| CR1000X | To obtain the highest accuracy, a high-accuracy junction measurement is required, such as that obtained using a 109 Temperature Probe or a GRANITE™ TEMP 120. | |
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | To obtain the highest accuracy, a high-accuracy junction measurement is required, such as that obtained using a 109 Temperature Probe or a GRANITE™ TEMP 120. | |
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Installation
The 105E is typically buried in the soil or other media. At the desired depth, the sensor should be placed horizontally to avoid thermal conduction between the surface and measurement junction. Placement of the sensor cable inside a rugged conduit may be advisable for long cable runs in locations subject to digging/mowing or lightning strikes.
Multiplexers
If large numbers of 105Es need to be measured, the AM25T Thermocouple Multiplexer is recommended.
Data Logger Considerations
Programming
The 105E is measured by the TCDiff instruction in CRBasic and by Instruction 14 (Differential Thermocouple) in Edlog. One differential channel per probe is required; a thermocouple reference junction at the data logger is also required. The CR200(X)-series, CR500, and CR510 dataloggers do not have thermocouple measurement instructions and are therefore not compatible with the 105E.
相关技术文档
常见问题解答
105E-L: 5
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There are many sources for Type E thermocouple reference tables available online. One example is provided by OMEGA in the "Revised Thermocouple Reference Tables."
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Yes. A reference temperature is required for the 105E-L thermocouple measurement. The data logger wiring panel temperature is an appropriate reference temperature when the 105E-L is wired directly to the data logger. Additional considerations are necessary if the 105E-L is being measured on a multiplexer. For more information, refer to the “Thermocouple Measurement” section in the AM16/32B Relay Multiplexer Instruction Manual.
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The 105E-L is only as portable as the data acquisition system. Typical data acquisition systems are either permanent or semi-permanent; therefore, the 105E-L is intended for in-situ, long-term measurements.
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The TPE outer jacket on the 105E-L has an operating temperature range of -55°C to +125°C.
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The correct Short Cut entry for the 105E-L is 105E (chromel-constantan) Thermocouple. This selection provides sensor-specific information, such as the color-coded wiring diagram and program annotation. However, the Type E (chromel-constantan) Thermocouple entry will produce the same measurement instruction.