这促使uct is no longer available.
| Services Available | |
|---|---|
| Repair | 不 |
| 校准 | 不 |
| Free Support | Yes |
Overview
The CWS220 is a wireless version of our SI-111 infrared radiometer. It measures the surface temperature of an object without physical contact. This radiometer has an internal 900 MHz spread-spectrum radio that transmits data to a CWB100 Wireless Base Station or to another wireless sensor.
The frequency of the CWS220's internal radio is commonly used in the US and Canada.
Read MoreBenefits and Features
- Provides road surface, plant canopy, soil surface, snow surface, and water surface temperature measurements
- Internal frequency-hopping, spread-spectrum radio provides longer range and less interference
- Battery powered
- 可靠，低维护，低功耗的低功耗方法，用于在有线传感器是不切实际或不受欢迎的应用中进行测量
- Transmissions can be routed through up to three other wireless sensors
- 在现场连续测量表面温度
- Ideal for providing spatial averages
- Compatible with CR800, CR850, CR1000, and CR3000 dataloggers
该产品将于2017年4月10日中止。请审核CWS系列和CWB系列停产通知for further details.
Images
Detailed Description
CWS220包括测量表面温度的热电堆，以及测量传感器体温的热敏电阻。两个温度传感器容纳在含有锗窗口的坚固型体内。它是使用碱性电池或可充电电池和太阳能电池供电的电池。
The CWS220 can route its transmissions through up to three other wireless sensors. A data logger is connected to the CWB100 base station for processing and storing its data. The CWS220 interfaces with a PC for configuration via the A205 CWS Sensor to PC Interface.
用于通过Stefan-Boltzman方程确定目标温度的校准系数存储在校准时的CWS220中。
Why Wireless?
There are situations when it is desirable to make measurements in locations where the use of cabled sensors is problematic. Protecting cables by running them through conduit or burying them in trenches is time consuming, labor intensive, and sometimes not possible. Local fire codes may preclude the use of certain types of sensor cabling inside of buildings. In some applications measurements need to be made at distances where long cables decrease the quality of the measurement or are too expensive. There are also times when it is important to increase the number of measurements being made, but the data logger does not have enough available channels left for attaching additional sensor cables.
不te:The internal radio is not designed to move a lot of data quickly. It takes 15 to 30 seconds per hop when moving data from a sensor, through a sensor used as a repeater, and ending up at the base radio. Going through three repeaters could take a data packet anywhere from 45 to 90 seconds to get to the base radio.
Specifications
| 耐候性 | 传感器和电池组的IP67等级（必须正确安装电池组。每个传感器都会泄漏。） |
| Operating Temperature Range | -25°至+ 50°C |
| Operating Relative Humidity Range | 0 to 100% |
| Power Source | 2 AA电池的电池寿命为1年，假设每10分钟花样采用传感器样品。（可选的可选太阳能充电。） |
| Average Current Drain | 300μA（投票15分钟） |
| Response Time | < 1 s (to changes in target temperature) |
| 目标温度输出信号 | 60 μV per °C difference from sensor body |
| 体温输出信号 | 0到2500 mv |
| Wavelength Range | 8 to 14 μm (Corresponds to atmospheric window.) |
| Field of View (FOV) | 22° half angle |
| Absolute Accuracy |
|
| Uniformity |
|
| Optics | Germanium lens |
| 重复性 |
|
| Dimensions | 15 x 6 x 4.5 cm (5.9 x 2.4 x 1.77 in.) |
| Weight | 270 g (9.6 oz) |
内部25 MW FHSS收音机 |
|
| Frequency | 902至918 MHz |
| Where Used | US and Canada |
| FHSS Channel | 50 |
| Transmitter Power Output | 25 mW (+14 dBm) |
| Receiver Sensitivity | -110 dBm (0.1% frame error rate) |
| Standby Typical Current Drain | 3 μA |
| 接收典型的电流排水 | 18 mA（全跑） |
| 传输典型的电流漏极 | 45马 |
| Average Operating Current | 15 μA (with 1-second access time) |
| Quality of Service Management | RSSI |
| 附加的功能 | GFSK调制，数据交错，前向纠错，数据加扰，RSSI报告 |
Compatibility
不te:以下显示了显着的兼容性信息。它不是所有兼容或不兼容产品的全面列表。
Data Loggers
| Product | Compatible | 不te |
|---|---|---|
| CR1000.(retired) | ||
| CR200X(retired) | ||
| CR206X(retired) | ||
| CR211X(retired) | ||
| CR216X(retired) | ||
| CR295X(retired) | ||
| CR3000(retired) | ||
| CR5000(retired) | ||
| CR6. | CR6数据记录器必须具有数据记录器OS版本4.0或更高版本。 | |
| CR800 | ||
| CR850. | ||
| CR9000x.(retired) |
额外的兼容性信息
Mounting
CWS220通过26054支架安装到桅杆或杆上。它以距目标的适当距离安装在其可以测量单个叶子，树冠或任何感兴趣的表面。因为CWS220是无线的，所以它可以安装在电缆传感器的许多位置。
Documents
下载
Wireless Sensor Planner v.1.7 (30.5 MB)08-08-2013
无线传感器规划仪是坎贝尔科学无线传感器使用的工具。它有助于设计和配置无线传感器网络。
常见问题
Number of FAQs related toCWS220:2
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需要一个A205来将无线基站的无线电地址写入无线传感器固件，使得传感器将响应基站轮询。这是使用设备配置实用程序软件完成的。A205也可用于将计算机直接连接到CWS655，CWS220或CWS900进行诊断，更改基站无线电地址，上传新固件和验证传感器功能。只有需要购买一个A205 - 除非具有多个计算机的多个用户需要执行这些任务。
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Because the devices and the radios use the same frequency bands, there will be interference. Factors affecting the amount of interference include the distances between the communications radio and the CWS radios, and the distances between the CWS base and the sensors. Also, the amount of interference is affected by whether the communications radio is set up as a master.
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