ClimaVue™50はCampbell Scientificの柔軟性と拡張性に優れたデータ収集プラットフォームと組み合わせることで一般的な気象モニタリングのニーズをシンプルに満たす手頃な価格の複合気象センサです。このセンサはSDI-12を使用して温度、相対湿度、蒸気圧、気圧、風(速度、突風、方向)、日射量、降水量、落雷(回数と距離)を報告します。可動部がなく、消費電力も少ないです。内蔵の傾斜センサーが長期間のデータ保全性を保証します。この多様な製品は、迅速な配備、遠隔地、大規模ネットワーク、より複雑なシステムの一部として、または単にシンプルなものが必要な場合に最適です。
続きを読むすべてのセンサが1つの小型ユニットに統合されているため、設置にかかる労力は最小限で済みます。磨耗や汚損によるエラーを防ぐ堅牢で可動部のない設計のClimaVue 50は長期にわたる遠隔地に設置するのに理想的です。
日射量は、ClimaVue 50の上部にあるレインゲージファンネルのリップに組み込まれた日射計によって測定されます。この小型日射計はシリコンセルセンサを使用して、入射日射量(直達日射量と拡散日射量)の合計を測定します。シリコンセルセンサーは、変化する日射条件に対して優れた応答時間を持ち、日射スペクトル全体にわたって許容できる感度を持つため、ClimaVue 50での使用に適しています。
雨量計の下の空間はClimaVue 50が風速を測定する場所です。互いに直角に配置されたトランスデューサーから発せられた超音波信号は、多孔質焼結ガラス板で跳ね返り、反対側のセンサーに戻ります。音速は風の影響を受け、送信機から受信機まで音が伝わる時間の差を測定することで風速を算出します。
ClimaVue 50の温度測定は、風速計の中央にある4つの音波トランスデューサーの中央から小さな温度センサ(サーミスタ)を内蔵した小さなステンレス針が伸びている部分で行われます。
ClimaVue 50の相対湿度センサは、音波トランスデューサーの近くにある円形のテフロン™スクリーンの裏側にあります。テフロンスクリーンは液体の水やほこりからセンサを保護する一方で、水蒸気がセンサを自由に通過できるようにします。ClimaVue 50は相対湿度と温度を測定し、蒸気圧を計算します。
ClimaVue 50には傾斜センサも搭載されています。傾斜センサのデータの主な用途は、ClimaVue 50 が常に水平であることを確認することです。定期的にXとYの傾斜データをチェックして、ClimaVue 50が水平であることを確認します。傾いた場合は、現場に戻って再度水平にしてください。水平から3度ずれると、雨や日射の測定に誤差が生じることがあります。このセンサの測定値を使用して設置時に機器を水平にすることもできますが、風速計プレートの底にある小さなバブルレベルを使用する方がはるかに簡単です。
ClimaVue 50には、公称外径31.8~50.8mm(1.25~2.0インチ)のパイプに取り付けるためのVボルトが付属しています。これにより、センサを三脚マストまたはCM300シリーズの取付ポールに直接取り付けるか、17387 取付パイプキット.を使用してクロスアームに取り付けることができます。
計測項目 | 気温、気圧、雷の平均距離、落雷回数、降水量、相対湿度、日射量、傾斜、風向、風速。 |
通信 | SDI-12 |
動作温度範囲 | -50° から +60°C (気圧計と相対湿度計を除く: -40° から +60°C.) |
Minimum Supply Voltage | 3.6 Vdc continuous |
Maximum Supply Voltage | 15.0 Vdc continuous |
Minimum Digital Input Voltage |
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Typical Digital Input Voltage |
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Maximum Digital Input Voltage |
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12 Vdc での標準電流消費量 | < 1 mA (平均) |
Typical Measurement Duration | 110 ms |
Maximum Measurement Duration | 3,000 ms |
Maximum Polling Frequency | 10 s |
Application of Council Directive(s) |
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Standards to Which Conformity Is Declared |
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Connection Description | 25 mm (10 in.) pigtail with M12 pin (male) 5-pin 316 stainless-steel knurl |
Diameter | 10 cm (4 in.) including rain gage funnel |
Height | 34 cm (13.4 in.) including rain gage funnel |
Weight | 839.15 g (1.85 lb) |
消費電流 |
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Quiescent | 0.3 mA |
Maximum Peak Current | 33 mA |
Average Using the R7! Command every 10 s | 1.0 mA |
Average Using the R7! Command every 60 s (or slower) | 0.4 mA |
気温 |
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Measurement Range | -50° to +60°C |
消費電流 |
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Resolution | 0.1°C |
Accuracy | ±0.6°C |
相対湿度 |
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Measurement Range | 0 to 100% |
Resolution | 0.1 |
Accuracy | ±3% RH typical (varies with temperature and humidity) |
気圧 |
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Barometer Operating Temperature Range | -40° to +60°C |
Measurement Range | 500 to 1100 hPa |
Resolution | 0.1 hPa |
Accuracy |
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蒸気圧 |
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Measurement Range | 0 to 47 kPa |
Resolution | 0.01 kPa |
Accuracy or Repeatability | Varies with temperature and humidity; ±0.2 kPa typical below 40°C. |
風速 |
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Wind Speed Maximum | 10 s gust |
Measurement Range | 0 to 30 m/s (0 to 67 mph) |
Resolution | 0.01 m/s (0.02 mph) |
Accuracy or Repeatability | 0.3 m/s or 3% (0.67 mph or 3%), whichever is greater |
風向 |
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Measurement Range | 0° to 359° |
Resolution | 1° |
Accuracy | ±5° |
日射 |
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Measurement Range | 0 to 1750 W m-2 |
Resolution | 1 W m-2 |
Accuracy | ±5% of measurement (typical) |
Spectral Range | 300 to 1150 nm |
雨量 |
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Measurement Range | 0 to 400 mm/h (15.75 in./h) |
Resolution | 0.017 mm |
Accuracy | ±5% of measurement (from 0 to 50 mm/h or 0 to 1.97 in./h) |
傾斜 |
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Measurement Range | -90° to +90° |
Resolution | 0.1° |
Accuracy | ±1° |
落雷回数 |
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Measurement Range | 0 to 65,535 strikes |
Resolution | 1 strike |
Accuracy | > 25% detection at < 10 km typical (variable with distance) |
落雷平均距離 |
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Measurement Range | 0 to 40 km (0 to 24.9 mi) |
Resolution | 3 km (1.86 mi) |
Accuracy | Variable |
An example CR1000X program that uses the R7! SDI-12 command to retrieve data. The program adjusts the barometric pressure measurement to sea level. The adjustment is entered as a constant in the beginning of the program. It assumes the site elevation is 1382 m, and a different value is required for different site elevations.
This program also includes instructions that set wind measurements that are less than 0 to the last valid measurement. These instructions are needed because high winds with rain can temporarily interfere with sonic wind measurements.
ClimaVue 50に関するよくある質問の数: 10
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Internally to the ClimaVue 50, precipitation is continually measured. Solar radiation, wind, and air temperature are measured every 10 seconds; orientation, vapor pressure, atmospheric pressure, and relative humidity are measured every 60 seconds. Querying the sensor more often than two times the measurement interval will return raw values. Querying more often than the measurement interval will result in duplicate values and may cause timing problems in the data logger.
The ClimaVue 50 is a microclimate sensor, so you should position it to be representative of the climate relevant to the research questions you are asking. FAO56 gives specific guidelines to the positioning and field size of sensors. If you intend to use the sensor for reference ET, follow those guidelines. Refer to the following: http://www.fao.org/docrep/X0490E/X0490E00.htm.
The average current drain for the ClimaVue 50 during the quiescent state and routine 10 s wind measurement is on the order of 300 µA. Polling with the aR7! command every 60 seconds increases the average current drain to 0.4 mA. Polling with the aR7! command every 10 seconds increases the average current drain to 1 mA.
The ClimaVue 50 mounting type can be a meteorological stand, pole in cement, or tripod: 31.8 to 50.8 mm, 1.25 to 2.0 in. diameter. The ClimaVue 50 is fitted with a V-bolt, allowing it to be mounted on top of most posts, poles, tripods, etc. Use a wrench to tighten the bolts, securing the ClimaVue 50 flat and tight against the top of the stand.
The ClimaVue 50 collects all the information necessary to correct for absorbed radiation using an energy balance approach.
The SDI-12 bus is capable of having at least 10 sensors connected to it, each with 200 feet of cable. With fewer sensors, longer cable lengths are possible.
See the maintenance section of the manual for recommendations.
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:
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.
We do not have a heated version of the ClimaVue 50 at this time. The model to correct the air temperature is based on the energy balance and should be good in all situations in which the radiation and wind sensors can collect reliable data; however, unintentional burial in snow and ice may impede the function of both. The ClimaVue 50 will not be a universally great fit for all climates. If the winter precipitation is critical for your study, other instruments will be necessary.
The ClimaVue 50 does need to be powered continuously to make the routine wind measurements (every 10 seconds) that are combined to give the wind speed and direction. If you only power up and quickly grab a measurement, those wind speed and direction measurements will be of little value, given the inherently variable nature of wind. Campbell Scientific highly recommends that you power the ClimaVue 50 instruments continuously for reliable wind measurement. The average current drain for the ClimaVue 50 during the quiescent state and routine 10 s wind measurement is on the order of 300 microAmps, so battery drain from continuous power should be minimal.
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