240-MP-200 Handheld Pyranometer (External Sensor)
The 240-MP-200 Pyranometer is a handheld meter connected by a cable to an external sensor. The meter displays and stores measurements in watts per square meter (W/m²). The sensor incorporates a silicon-cell photodiode and a rugged, self-cleaning housing. Typical applications include measuring shortwave radiation in agricultural, ecological, and hydrological weather networks, as well as in solar panel arrays.
The 240-MP-200 Pyranometer is a handheld meter connected by a cable to an external sensor. The meter displays and stores measurements in watts per square meter (W/m²). The sensor incorporates a silicon-cell photodiode and a rugged, self-cleaning housing. Typical applications include measuring shortwave radiation in agricultural, ecological, and hydrological weather networks, as well as in solar panel arrays.
The meter has a sample and log mode and records an integrated daily total in megajoules per square meter per day (MJ/m²/d). In sample mode, the meter will record up to 99 manual measurements. In log mode, the meter turns on and off every 30 seconds to take a measurement. Every 30 minutes, the meter averages the previous 30 measurements and stores the average value. The meter can store up to 99 averaged values; once full, it will start to overwrite the oldest measurement with new ones. An integrated daily total will be recorded from the 48 averaged measurements (covering a 24-hour period). Sample and log measurements can be reviewed on the LCD display or by downloading the data to a computer, but the integrated daily total can only be viewed by downloading the data to a computer. To download data to a computer, you will need a 240-AC-100 Communication Cable (standard USB cables will not work) and Apogee AMS software.
Specifications
- Calibration Uncertainty: ± 5%
- Measurement Repeatability: Less than 1%
- Non-stability (Long-term Drift): Less than 2% per year
- Non-linearity: Less than 1% (up to 1750 W/m²)
- Response Time: Less than 1 ms
- Field of View: 180°
- Spectral Range: 360 to 1120 nm (wavelengths where response is 10% of maximum)
- Directional (Cosine) Response: ± 5% at 75° zenith angle
- Temperature Response: 0.04 ± 0.04% per degree centigrade
- Operating Environment: 0 °C to 50 °C, less than 90% non-condensing relative humidity up to 30 °C, less than 70% non-condensing relative humidity from 30 °C to 50 °C, separate sensors can be submerged in water up to depths of 30 meters
- Meter Dimensions: 126 mm length, 70 mm width, 24 mm height
- Sensor Dimensions: 24 mm diameter, 28 mm height
- Mass: 180 g
- Cable: 2 meters of shielded, twisted-pair wire with santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions), additional cable available
- Warranty: 4 years against defects in materials and workmanship
