Pyranometer FAQs

Apogee offers silicon-cell and thermopile detector pyranometers. From a big picture perspective, the thermopile pyranometer is more accurate in all conditions than the silicon-cell models.

Generally speaking, thermopile pyranometers have a larger spectral range (this makes them more accurate in all atmospheric conditions), smaller output signal, longer response time, and are more expensive than silicon-cell detectors.

Silicon-cell pyranometers are less expensive and faster response, but errors are higher under cloudy conditions. The table below is a comparison of the general specifications for Apogee silicon-cell pyranometers and thermopile pyranometers:

Specifications	硅 - 细胞探测器	Thermopile Detector
Calibration Uncertainty	± 5 %	± 5 %
Cosine Response	± 5 % below 75° zenith angle	不到30米-2at 80° zenith angle
Error Due to Clouds	+ 10 to 15 % (common to all silicon-cell pyranometer)	± 2 %
Spectral Range (50% Points)	360至1120 nm	385到2105 nm
基础模型输出电压	0 to 350 mV = 0 to 1750 W m-2	0到114 mv = 0到2000 w m-2
响应时间	Less than 1 ms	0.5 seconds

All SP-100, SP-200, and MP series silicon-cell pyranometers use the same silicon-cell detector. The model number you need depends on which output is compatible with your datalogger. Model numbers are listed below with their output:

SP-110:0 to 350 mV = 0 to 1750 W m^-2

SP-230:0到250 mv w /加热器= 0到1750 w m^-2
*Note: The SP-230 has the same voltage output as the SP-110 but features a built in heater and Delran mounting stand for deployment in condensing or cold weather applications (e.g. frost, snow, sleet, freezing rain).

SP-212：0 to 2.5 V = 0 to 1250 W m^-2

SP-215：0 to 5.0 V = 0 to 1250 W m^-2

SP-214：4到20 ma = 0到1250 w m^-2b0b体育app下载

SP-420：USB /软件

MP-100:Sensor integrated into the top of the handheld meter with digital readout

MP-200:传感器连接到具有数字读数的手持式仪表

*The above ranges are standard and built to stock. If you need a larger range than what is listed please contact technical support for a quote on your specific requirement.

For information on using Apogee pyranometers to monitor solar panels, please visitb0b体育app下载 .

For maximum accuracy, we generally recommend all sensors be recalibrated every two years. You may wish to wait longer between recalibration cycles depending on your requirements. The Clear Sky Calculator may be used as a quick reference to determine if recalibration is necessary for pyranometers and quantum sensors, click这里for more information on the Clear Sky Calculator. For additional information on how to send your sensor in for calibration and pricing please click这里.

Isopropyl (rubbing) alcohol and a Q-tip work well for cleaning the sensor area. Be careful NOT to use an abrasive cloth on the top as it will scratch the surface of the sensor. Microfiber bags work well too.

Yes, if properly spliced, the signal from the sensor is not affected by splicing on additional cable. We have tested splicing up to 100 meters of cable. For information on how to create a proper waterproof splice, please visit ourinstructional webpage或者B0B体育平台下载 .

我们提供我们的高质量电缆和拼接套件的定制电缆长度，可在购买时或以后的日期订购。

使用提供的尼龙安装螺杆将传感器安装到实心表面上。为了准确测量入射在水平表面上的总短波辐射，传感器必须是水平的。一个顶点AL-100 Leveling Plate建议为此目的。便于安装在十字架上，是一个散步AM-110安装支架is recommended.

方位误差最小化,传感器应该莫unted with the cable pointing toward true north in the northern hemisphere or true south in the southern hemisphere. Azimuth error is typically less than 1 % but is easy to minimize by proper cable orientation.

除了定向电缆朝向最近的杆指向，还应安装传感器，使得障碍物不会遮住传感器。

*太阳能应用：我们的许多太阳能客户询问是否应在水平或阵列平面上安装传感器。由于大多数应用程序都验证面板效率/面板污染我们推荐阵列平面，但是，每个应用程序都不同，有些可能需要水平安装。

Absolutely. We have quite a few customers that purchase our sensors for continuous deployment in underwater applications such as marine biology and hydrology. The SP-series pyranometer sensors are completely sealed and watertight and the cable can be submerged underwater as well.
Caution: The MP-series handheld meters cannot be submerged (the screen is splash resistant). The sensor head and cable of the MP-200 can be submerged.

SP-110被认为是自动的，并且已被校准为5.0 W m^-2per mV. Using a voltmeter with a mV setting allows for better resolution. Connect the positive lead of the voltmeter to the red wire of the pyranometer and the negative lead of the voltmeter to the black wire of the pyranometer. Once you are reading the mV output from the sensor, multiply this reading by 5.0. This will give you the W m^-2output from the sensor, also known as irradiance.

Handheld Meter Video Guide
AC-100通信电缆配件用于从我们的任何手持式仪表中下载保存的测量值。该USB电缆包括内置电路板，用于转换电压电平与Micro-USB电缆的仪表正常USB兼容not工作。ac - 100还附带了一个闪存盘那t includes the necessary computer software, drivers, and instructions. If you already have the AC-100 and just need the software files please click这里.

Do I need to order a sensor to go with my meter?

尽管可以将附加电缆接合到单独的传感器，但请注意，电缆线直接焊接到仪表的电路板中。应注意拆下仪表的后面板，以便在额外的电缆上接入电路板并拼接，否则需要在仪表和传感器头之间进行两种接头。点击这里有关如何扩展传感器电缆长度的更多详细信息。

错误代码将出现代替LCD显示屏上的实时读数，并将继续闪烁，直到问题纠正。有关完成修复的步骤，请参阅manual.

Err 1:Battery voltage out of range.	Fix:replace CR2320 battery and perform master reset.
呃2：Sensor voltage out of range.	Fix:执行主复位。
呃3：未校准。	Fix:执行主复位。
呃4：CPU voltage below minimum.	Fix:replace CR2320 battery and perform master reset.

仪表采用CR2320硬币电池。

可以执行主重置，以纠正问题。*注意：主重置将删除存储器的所有记录测量值。

首先按下电源按钮，以便激活LCD显示屏。虽然仍然有动力，请将电池从支架中滑出，这将导致液晶显示器淡出。几秒钟后，将电池滑回支架。LCD显示屏将闪存所有段，然后显示修订号。这表示执行了主复位，并且显示器应返回正常情况。

No – user should record the starting time when the meter is placed in LOG mode and take note of time when sampled readings are taken.

当在日志模式下，仪表将打开/关闭，每30秒开启/关闭。每30分钟仪表将平均六十六次测量，并将平均值记录到内存中。仪表可以存储多达99个平均值，并在有99次测量后开始覆盖最旧的测量。每48次平均测量（制作24小时），仪表也将以每米的每天摩尔斯储存99总计，每天平方（Mol M）^-2d^-1）。

当在SMPL模式下按下样本按钮录制最多99次手动测量（LCD显示屏的右上角的计数器表示保存的测量值）。

Please emailtechsupport@apogeeinstruments.com.with the model number and serial number for your sensor.