CS320数字热电堆烟堆

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1. How can the CS320 be mounted if the 18356 leveling base is not used?

   The leveling base provides physical stability and helps ensure the sensor is leveled correctly. It is not recommended to use the sensor without the base. The sensor mounts to the base with an included bolt. However, a user-supplied plate with a hole drilled in it could be used instead to accept the sensor’s mounting bolt.

   Note:Whatever mounting method is used, the sensor has to be levelled to operate correctly.

2. How long can the CS320 cable be?

   SDI-12总线能够具有至少10个连接到它的传感器，每个传感器均配有200英尺的电缆。具有较少的传感器，较长的电缆长度是可能的。

3. 是否可以将CS320中的输出从4到20 mA形式读取？

   No.

4. 在日常站点访问中，如何检查CS320的校准？

   Compare the sensor against a recently calibrated CS320 on a clear, sunny day with the sun overhead. Ensure that the sensor being used as a reference is also level.

5. CS320多久需要重新校准？

   For maximum accuracy, Campbell Scientific generally recommends that all sensors be recalibrated every two years. Depending on the requirements of the application, it may be desirable to wait longer between recalibration cycles. To determine if recalibration is necessary for pyranometers, visit theClear Sky Calculator web page.

   有关其他信息，请阅读“如何检查太阳辐射测量的准确性”博客文章.
   
   

6. 如果连接到传感器的电缆太短，可以更多的电缆可以拼接到现有的电缆以使其更长？

   Whenever possible, purchase a sensor with the desired cable length. Some sensors have a user-specified cable length, whereas other sensors have a set cable length.

   有时，旧电缆可以用新的更长的电缆替换。

   Generally, additional cable cannot be spliced onto the existing cable because:

   • Some sensor cables have bridge completion resistors at the pigtail end
   • Some sensors are calibrated based on cable length
   • 有时绝缘中的颜色与尾纤末端可见的颜色不同
   • 根据拼接的完整性，可以引入错误或故障

   拼接电缆一起增加水可以进入电缆的可能性并导致短路，腐蚀和一些其他潜在问题，这反过来可能导致测量问题。

   Because of the potential issues, do not splice any sensor cable without first contacting Campbell Scientific to discuss the sensor in detail.

7. Where are the available cable termination options listed for a particular sensor?

   并非每个传感器都有不同的电缆终端选项。可以通过在传感器产品页面的“排序信息”区域中查看两个位置来检查特定传感器的选项：

   • Model number
   • 电缆终止选项列表

   如果在-ET中提供传感器，-ETM，-LC，-LQ或-QD版本，则该选项的可用性反映在传感器型号中。例如，034b作为034b-et，034b-etm，034b-lc，034b-lq和034b-qd提供。

   如果有可用的所有其他电缆终端选项将列在“电缆终止选项”下的传感器产品页面的“订购信息”区域上列出。例如，034B-L风装置具有-CWS，-PT和-PW选项，如034B-L产品页面的排序信息区域所示。

   Note:As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model.

8. Can a CS320 be calibrated to a smaller range to measure only PAR (photosynthetically active radiation)?

   No. It’s not the range that makes a sensor a quantum sensor. It is the type of light filter used with the photocell that only allows specific wavelengths of light in the PAR frequency range to strike the photocell.

9. What is the difference between a thermopile pyranometer and a silicon photocell pyranometer?

   For thermopile pyranometers, a thermopile is used within the instrument as the sensor, and the thermal gradients are measured across hot and cold areas (black and white). The radiation intensity is proportional to the temperature differences between the two sensing areas. Accuracy depends upon the sensitivity of the material used in the sensors, the response time, and the distortion characteristics of the material constituting the dome (if present) covering the sensors.

   For silicon photocell pyranometers, electric current is generated by a photo-sensitive diode in proportion to solar intensity. Ordinarily, silicon photocell pyranometers are not fully sensitive to the full spectrum of visible light, and they cannot “see” a certain portion of the electromagnetic spectrum such as under cloudy conditions or vegetative canopies. Silicon photocell pyranometers will introduce errors under these conditions. In full sunlight conditions, however, they are calibrated to properly output solar radiation measurements.