Ideal for long-term deployment in harsh conditions
Overview
The CS305-ETM pyranometer, manufactured by Apogee, is similar to the CS300 but uses a different fixed multiplier and includes a leveling mount.
Read MoreBenefits and Features
- Dome-shaped head prevents water from accumulating on the sensor head
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Technical Description
The CS305-ETM measures total sun and sky solar radiation using a silicon photocell. The spectral range is 300 to 1000 nanometers, which encompasses most of the shortwave radiation that reaches the Earth's surface.
The standard output is 0.005 mV per W m-2, which provides a signal of 5 mV in full sunlight (1000 W m-2). All of our dataloggers, except the CR200(X) series, can measure this output. Therefore both the ET107 and ET106 are compatible.
Specifications
| Light Spectrum Waveband | 300 to 1100 nm |
| Measurement Range | 0 to 2000 W m-2 (full sunlight ≈ 1000 W m-2) |
| Absolute Accuracy | ±5% for daily total radiation |
| Cosine Response |
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| Temperature Response | < 1% (at 5° to 40°C) |
| Long-Term Stability | < 2% per year |
| Diameter | 2.4 cm (0.9 in.) |
| Cable Length | 152.4 cm (60 in.) |
| Height | 2.5 cm (1.0 in.) |
| Weight | 65 g (2.3 oz) |
Compatibility
The connector attaches to an ET107 or ET106 Weather Station.
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Related FAQs
Number of FAQs related to CS305-ETM: 2
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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 on the product’s Ordering tab. 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.
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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 an application engineer at Campbell Scientific for assistance.