The CS300, manufactured by Apogee Instruments, measures total sun and sky solar radiation for solar, agricultural, meteorological, and hydrological applications. Its spectral range of 360 to 1120 nanometers encompasses most of the shortwave radiation that reaches the Earth's surface. This pyranometer connects directly to our dataloggers. Its output can be measured by all of our dataloggers.Read More
The "-L" on a product model indicates that the cable length is specified at the time of order.
The CS300 uses a silicon photovoltaic detector mounted in a cosine-corrected head to provide solar radiation measurements for solar, agricultural, meteorological, and hydrological applications. Calibrated against a Kipp & Zonen CM21 thermopile pyranometer, the CS300 accurately measures sun plus sky radiation for the spectral range of 360 to 1120 nm. Sensors calibrated to this spectral range should not be used under vegetation or artificial lights.
The standard output is 0.2 mV per W m-2, which provides a signal of 200 mV in full sunlight (1000 W m-2). All of our dataloggers, including the CR200(X) series, can measure this output.
|Light Spectrum Waveband||360 to 1120 nm (wavelengths where response is 10% of maximum)|
|Measurement Range||0 to 1750 W m-2 (full sunlight ≈1000 W m-2)|
|Absolute Accuracy||±5% for daily total radiation|
|Sensitivity||5 W m-2 mV-1 (0.2 mV W-1 m-2)|
|Cosine Response||±5% at 75° zenith angle; ±2% at 45° zenith angle|
|Temperature Response||< 1% (at 5° to 40°C)|
|Response Time||< 1 ms|
|Long-Term Stability||< 2% per year|
|Operating Temperature Range||-40° to +70°C|
|Relative Humidity||0 to 100%|
|Output||0.2 mV per W m-2|
|Diameter||2.4 cm (0.9 in.)|
|Height||2.5 cm (1.0 in.)|
|Weight||65 g (2.3 oz) with 2-m (6.6-ft) lead wire|
Accurate measurements require the sensor to be leveled using a 18356 leveling fixture. This leveling fixture incorporates a bubble level and three adjusting screws. The 18356 mounts to a crossarm or a tripod or tower mast using the CM225 mounting stand. The CS300 should be mounted away from all obstructions and reflective surfaces that might adversely effect the measurement.
One differential analog input channel per probe is required.
Number of FAQs related to CS300-L: 9
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Compare the sensor against a recently calibrated CS300-L on a clear, sunny day with the sun overhead. Ensure that the sensor being used as a reference is also level.
The leveling base provides physical stability and helps ensure the sensor is leveled correctly. It is not recommended to use the sensor without the base. The sensor mounts to the base with an included bolt. However, a user-supplied plate with a hole drilled in it could be used instead to accept the sensor’s mounting bolt.
Note: Whatever mounting method is used, the sensor has to be levelled to operate correctly.
No. It’s not the range that makes a sensor a quantum sensor. It is the type of light filter used with the photocell that only allows specific wavelengths of light in the PAR frequency range to strike the photocell.
Campbell Scientific does not recommend splicing any cable into the existing cable. Splicing a cable could introduce water and electrical noise into the connection. The sensor can be ordered with longer cable lengths, and 50 m is right on the edge of the recommended length. With a cable this long, Campbell Scientific recommends measuring the sensor differentially using the following wiring conventions:
Diff Channel H
Diff Channel L
AG or Ground Symbol
Diff Channel L to AG or Ground Symbol
In the datalogger program, a differential voltage instruction needs to be used instead of a single-ended voltage instruction.
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.
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:
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.
Many Campbell Scientific sensors are available with different cable termination options. These options include the following:
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.
To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it.