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概览
Note: The SEN12512 is only available in a limited supply and will be discontinued after the supply is exhausted.
The SEN12512 is an EasyAG probe with an SDI-12 interface and a 50-cm length. This probe provides water content profiles for cultivated soils of good tilth—commonly found in vegetable production areas. For stony soils where the average stone size is greater than 10 mm, use the EnviroSCAN probe.
优势与特点
- 按固定的多层深度布设的多个传感器
- 内置的探头方位和深度设置，增加传感器的可重复性
- 定制的接入管增加了传感器的精度
- 特别密封，保证长期操作
- 不需要破坏站点，可以很容易接近探杆和传感器，进行维护
图像
技术说明
The SEN12512 includes several water content sensors that measure soil water at multiple depths. Around each sensor, the probe creates a high frequency electrical field that extends through the access tube into the soil. Electrical capacitance is then measured and soil water content is determined from those measurements.
Each water content sensor outputs an SDI-12 signal that our CR200(X)-series, CR800, CR850, CR1000, and CR3000 dataloggers can measure. This allows the probes to be integrated with a Campbell Scientific data logger or weather station. Integrating the probes into our data acquisition systems allows the data to be telemetered back to a field station or remote computer.
产品规格
| Sensor Measuring Principle | High-frequency capacitance |
| Output | SDI-12 version 1.2 |
| Interface Measuring Principle | 16 bit pulse count |
| Output Resolution | 16 bit |
| Current Consumption |
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| Water Content Reading Range | 0 to ~65% |
| Temperature Effects | ±3% (5° to 35°C) |
| Time to Read 1 Sensor | 1.1 s |
| Sphere of Influence | 99% of the reading is taken within a 10 cm radius from the outside of the access tube. |
| Sensors per Standard Probe | 5 |
| 操作温度范围 | 0° to 75°C |
| Sensor Diameter | 2.65 cm (1.0 in.) |
| Access Tube Diameter | 3.2 cm (1.3 in.) |
| Probe Length | 50 cm (20 in.) |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
常见问题解答
SEN12512: 2
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To protect itself, the interface will switch off when the supply voltage is above or below these operating voltages:
- Series 1: 9.6 to 20 Vdc (regulated)
- Series 2: 4.5 to 15 Vdc (regulated)
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The Sentek website provides an FAQ list.