HMP155A-L气温和相对湿度传感器

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1. What is the maximum cable length that can be used with the HMP155A-L?

   最大电缆长度为304 m（1000 ft）。

2. 可以与HMP155A-L一起使用41303-5A 6板辐射屏蔽罩或41003-5 10板辐射屏蔽？

   No. The HMP155A-L requires the41005-514-Plate Solar Radiation Shield.

3. 坎贝尔科学传感器可用哪些不同的电缆长度选择？

   Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:

   • –LC模型具有用户指定的电缆长度，可连接到ET107，CS110或已退休METDATA1。
   • –LQ型号具有用户指定的电缆长度，可连接到RAWS-P气象站。

   If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

   如果电缆用特殊的连接器终止于唯一系统，则型号的末端指定了哪个系统。例如，034B-ET模型将传感器指定为ET107系统的034B。

   • –ET models terminate with the connector for an ET107 weather station.
   • –ETM型号终止于ET107气象站的连接器终止，但它们还包括特殊的系统安装，在购买替换零件时通常很方便。
   • –QD型号用RAWS-F快速部署站的连接器终止。
   • –PW型号用PWENC或PREDENED系统的连接器终止。
4. 特定传感器列出了可用的电缆终止选项？

   并非每个传感器都有不同的电缆终止选项。可以通过在传感器产品页面的订购信息区域的两个地方查看特定传感器的选项：

   • 型号
   • 电缆终止选项列表

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

   如果有的话，所有其他电缆终止选项均在传感器产品页面的“电缆终止选项”下的“订购信息”页面上列出。例如，如034B-L产品页面的订购信息区域所示，使用–CWS，–PT和–PW选项提供034B-L风集。

   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.

5. What type of field check can be done on a temperature sensor or a temperature and relative humidity sensor to determine if it is within the range of specified accuracy or if it requires calibration?

   Note the difference between calibration and a field check. Calibration cannot be done in the field, as it requires an experienced technician and specialized equipment.

   Field checks of measurements can be done to determine if the data make sense with the real-world conditions. Follow these steps to field check a sensor:

   1. 找到与已涉及数据的已安装传感器相同类型的第二个传感器。第二个传感器将用作基准传感器，应知道是准确的或近期校准的。
   2. 在现场，在相同条件下使用两个传感器进行读数。最好的做法是同时测量两个传感器。请注意，传感器永远不会具有完全相同的测量。
   3. 根据传感器模型，如果安装和基准传感器的读数的差异大于两个传感器的精度之和，则要么将安装的传感器返回到坎贝尔Scientific进行校准或更换适当的芯片。
   • 可以校准107、108、109、110PV-L和BlackGlobe-L温度传感器。
   • 可以校准HC2S3-L和HMP155A-L温度和相对湿度传感器。
   • CS215-L具有可更换的芯片，可用于温度和相对湿度。For more information,请参阅CS215的“维护和校准”部分instruction manual.
   • 的HMP60-L has a replaceable chip for relative humidity only.For more information,refer to the “Maintenance” section of the HMP60instruction manual.
6. 坎贝尔科学传感器可用哪些不同的电缆终止选项？

   Many Campbell Scientific sensors are available with different cable termination options. These options include the following:

   • –pt（–pt w/tinned电线）选项是默认选项，并且不会像其他选项一样在产品线上显示。电缆终止于直接连接到数据记录器的辫子。
   • 在–C（–C W/ET/CS110连接器）选项中，该电缆终止在连接到CS110电场表或Et系列气象站的连接器中。
   • 在–CWS（–CWS W/CWS900连接器）选项中，该电缆终止在连接到CWS900系接口的连接器中。连接到CWS900系列接口，可以在无线传感器网络中使用传感器。
   • 在–PW（–PW w/w/pre-wire连接器）选项中，电缆终止在连接到固定外壳上的连接器中。
   • 在–RQ（–RQ W/RAWS连接器）选项中，该电缆终止在连接器的连接器中，该连接器连接到RAWS-P永久远程自动气象站。

   Note:的availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact Campbell Scientific for assistance.

7. 要将HMP155A-L连接到CR800或CR1000，是否应该使用差分或单端通道？

   Single-ended channels are typically used when it is desirable to use fewer channels and the cable length is shorter—less than 6.1 m (20 ft). Differential channels are preferable when the cable needs to be longer than 6.1 m (20 ft).