Strahlungssensoren / CMP10-L
CMP10-L ISO Secondary Standard Pyranometer

Überblick

Das CMP10, hergestellt von Kipp & Zonen, ist ein ISO Secondary Standard Pyranometer, das die Solarstrahlung über das gesamte Spektrum misst. Es kann direkt an einem Datenlogger von Campbell Scientific angeschlossen werden und ist besonders geeignet für meteorologische Netzwerke und Solarenergie-Anwendungen.

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Funktionen und Vorteile

  • Moderneres Detektor Design und schnellere Antwort als beim CMP6
  • Kompatibel mit fast allen Campbell Scientific Datenloggern
  • Integrierte Libelle ist sichtbar ohne dass man den Sonnenschutz abnehmen muss
  • Interne Trockenmittel-Kartusche verhindert, dass sich Kondenswasser auf der Innenseite des Domes niederschlägt
  • Compatibel mit dem CVF4 Heizung/Lüfter, der die Kuppeln frei von Eis und Tau hält
  • Misst reflektierte Sonnenstrahlung, wen umgekehrt angebracht
  • Misst in direktem Sonnenlicht, unter Pflanzendächern, Wolken oder in künstlichem Licht

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Technische Beschreibung

The CMP10 measures solar radiation with a high-quality blackened thermopile protected by two glass domes. Its flat spectral sensitivity, from 285 to 2800 nm, makes it ideal for applications in natural sunlight, under plant canopies, in greenhouses or buildings, and inverted to measure reflected solar radiation.

An internal drying cartridge prevents dew from forming on the inner sides of the CMP10's domes. Campbell Scientific also offers the CVF4 heater/ventilator that keeps its domes free from ice and dew.

The CMP10 includes a white snap-on sun shield that reduces the sensor's temperature. A bubble level and adjusting leveling screws enable the sensor to be leveled without using a leveling base.

The CMP10 produces a millivolt signal that is measured directly by a Campbell Scientific data logger.

Spezifikationen

ISO Classification Class A (secondary standard)
Spectral Range 285 to 2800 nm
Sensitivity 7 to 14 µV/W/m2
Temperature Dependence of Sensitivity < 1% (-10° to +40°C)
Response Time < 5 s (95% of final value)
Zero Offset Due to Thermal Radiation < 7 W/m2 (200 W/m2)
Non-Stability < 0.5% (change/year)
Non-Linearity < 0.2% (0 to 1000 W/m2)
Directional Error < 10 W/m2 (up to 80° with 1000 W/m2 beam)
Tilt Error < 0.2%
Level Accuracy 0.1°
Impedance 10 to 100 Ω
Operating Temperature Range -40° to +80°C
Typical Signal Output 0 to 15 mV (for atmospheric applications)
Maximum Irradiance 4000 W/m2
Expected Daily Uncertainty < 2%
Dome Diameter 5 cm (2 in.)
Width 15 cm (5.9 in.) with shield
Height 9.25 cm (3.64 in.)
Weight 0.9 kg (2 lb) with 10.1 m (33 ft) cable

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Datenlogger

Product Compatible Note
CR1000
CR1000X
CR200X (retired)
CR216X (retired)
CR300
CR3000
CR5000 (retired)
CR6
CR800
CR850
CR9000X

Miscellaneous

Product Compatible Note
CR310

Additional Compatibility Information

Mounting

The CMP10 has a bubble level and two leveling feet, which allow it to be leveled without using a leveling base. This pyranometer mounts to a mast, crossarm, or pole (1.0 in. to 2.1 in. OD) via the CM255 or CM255LS mounting stand. The CMP10 should be mounted away from all obstructions and reflective surfaces that might adversely affect the measurement.


FAQs für

Number of FAQs related to CMP10-L: 5

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  1. Because of the loss of IR radiation, nearly all thermopile instruments typically have a negative offset. This offset is most easily visible at night-time, when a small negative value is read instead of zero. This same offset is present during the daytime, but it is not as visible because of the large solar signal.

    Another common issue involves leveling an instrument. Leveling a thermopile instrument can cause errors in the direct beam component because the cosine response is not correct. These errors are more notable when the sun is close to the horizon because the angle is so shallow.

  2. 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:

    • Model number
    • 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. 

  3. 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:

    • An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
    • An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.

    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 models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
    • –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
    • –PW models terminate with the connector for a PWENC or pre-wired system.
  4. The ISO and WMO classify First Class pyranometers, such as the CMP6-L, as suitable for network operations. However, if accuracy is of paramount concern, consider using Secondary Standard pyranometers, such as the CMP11-L and CMP21-L, instead.
  5. 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 datalogger.
    • In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
    • In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
    • In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
    • In the –RQ (–RQ w/RAWS Connector) option, the 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.