108-LCTemperature Probe

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1. 温度是如何森sors such as the 107, 108, 109, 110PV-L, and BLACKGLOBE-L calibrated?

   When these sensors are purchased, the following calibration services are offered:临时and临时2.

   • 临时provides a single-point calibration and a calibration certificate. The single-point calibration determines the offset at 25°C with an uncertainty of ±0.05°C.
   • 临时2 provides a two-point calibration and a calibration certificate. The two-point calibration determines offsets at 30°C and 65°C with an uncertainty of ±0.05°C.

   For both of these services, calibration can be made at different values if it is requested by the purchaser at the time of purchase. In addition, both of these calibration services can be requested after sensor purchase using a return material authorization (RMA) number. To request an RMA number, refer to theRepair and Calibration页。

2. 坎贝尔科学传感器可用于坎贝尔科学传感器的不同电缆长度选择是什么？

   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，用于连接到ET107，CS110或REDIED METDATA1。
   • -LQ模型具有用户指定的电缆长度，用于连接到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.

   If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.

   • –ET models terminate with the connector for an ET107 weather station.
   • -ETM模型与ET107气象站的连接器终止，但它们还包括特殊系统安装，这在购买替换部分时通常是方便的。
   • -QD模型终止于RAWS-F快速部署站的连接器。
   • -pw模型终止连接器，用于P运行或预先接收系统。
3. 特定传感器列出的可用电缆终端选项在哪里？

   Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:

   • 型号
   • Cable Termination Options list

   If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

   All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

   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.

4. 对于107,108和109个温度传感器/探针，在白色圆筒内的热敏电阻实际位置？

   热敏电阻从探头尖端返回大约3毫米（0.125英寸）。

5. How can measurements be made using a 107, 108, or 109 temperature sensor/probe with a measurement device other than a Campbell Scientific data logger?

   The sensor/probe consists of a non-linear thermistor configured with a precision resistor in a half-bridge circuit, as shown in the product’s manual:

   • 型号107温度探头使用说明书
   • Model 108 Temperature Probe Instruction Manual
   • 108-LC温度探头为METDATA1使用说明书
   • Model 109 Temperature Probe Instruction Manual

   为了测量传感器/探头，测量装置必须提供精密励磁电压（Campbell Sciencific Loggers使用2000 MV），测量精密电阻上的电压，确定热敏电阻（欧姆的定律），并将电阻转换为温度使用Steinhart-Hart方程。

   The Steinhart-Hart equation is 1/T=A+Bln（R)+C(ln(R））³where:

   • T是克尔文的温度
   • Ris the resistance atT在欧姆
   • A, B,andCare the Steinhart-Hart coefficients, which vary depending on the temperature range of interest, as well as the type and model of the thermistor

   For the 107-L, 107-LC, 108-L, and 108-LC, the following are the coefficients for the Steinhart-Hart equation:

   • A= 8.271111e-4
   • B= 2.088020E-4
   • C= 8.059200E-8

   对于109-L，以下是Steinhart-Hart方程的系数：

   • A= 1.129241E-3
   • B= 2.341077E-4
   • C= 8.775468E-8
6. 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. 找到与已有问题所讨论的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，应该已知是准确的或最近校准的。
   2. 在网站上，在相同条件下使用两个传感器读取读数。最好的做法是同时并排测量两个传感器。请注意，传感器永远不会有完全相同的测量。
   3. Depending on the sensor model, if the difference in the readings of the installed and benchmark sensors is greater than the sum of the accuracies for both sensors, either return the installed sensor to Campbell Scientific for calibration or replace the appropriate chip.
   • 可以校准107,108,109,110PV-L和BlackGlobe-L温度传感器。
   • The HC2S3-L and HMP155A-L temperature and relative humidity sensors can be calibrated.
   • CS215-L具有可更换的芯片，用于温度和相对湿度。For more information,refer to the “Maintenance and Calibration” section of the CS215instruction manual.
   • The HMP60-L has a replaceable chip for relative humidity only.For more information,refer to the “Maintenance” section of the HMP60instruction manual.
7. 坎贝尔科学传感器提供的不同电缆终端选项是什么？

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

   • The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a data logger.
   • 在-c（-c w / et / cs110连接器）选项中，电缆终止于连接到CS110电场仪表或ET系列气象站的连接器中。
   • 在-wws（-cws w / cws900连接器）选项中，电缆终止于连接到CWS900系列接口的连接器中。与CWS900系列接口的连接允许传感器用于无线传感器网络。
   • 在-pw（-pw w / pre-wire连接器）选项中，电缆终止于连接到预先填充机箱的连接器中。
   • 在中移动(rq w /画连接器)选项,cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.

   Note:The 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.