LI200X-L
LI200X-L
End of lifeSilicone Pyranometer with Fixed Daylight Calibration
No longer available to order
This product is retained for service, documentation, and compatibility information.
Replaced by
- CS320
Digital Thermopile Pyranometer
- Model:
- LI200X-L
- Item Number:
- 8189
- Warranty:
- 1 year
Overview
The LI200X, manufactured by LI-COR, is a pyranometer that monitors sun plus sky radiation. It connects directly to our data loggers, and is used extensively in solar, agricultural, and meteorological applications.
Key Advantages
Connects directly to most Campbell dataloggers
Technical Description
The LI200X uses a silicon photovoltaic detector mounted in a cosine-corrected head to provide solar radiation measurements. Calibrated against an Eppley precision spectral pyranometer (PSP), the LI200X accurately measures sun plus sky radiation for the spectral range of 400 to 1100 nm. Sensors calibrated to this spectral range should not be used under vegetation or artificial lights.
The LI200X includes an epoxy-encased completion circuit in its cable. This completion circuit standardizes the sensor's sensor's calibration, allowing individual sensors to be interchanged without altering multiplier and offset values.
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 data loggers, except the CR200(X) series, can measure this output.
Product Notes
Benefits
- Compatible with most Campbell Scientific data loggers
- Calibrated for the daylight spectrum (400 to 1100 nm)
- Completion circuit in its cable standardizes calibration, allowing sensors to be interchanged without altering multiplier and offset values
Specifications
- Light Spectrum Waveband
- 400 to 1100 nm
- Accuracy
- Absolute error in natural daylight is ±5% maximum
(±3% typical)
- Sensitivity
- 0.2 kW m-2 mV-1
- Linearity
- Maximum deviation of 1% up to 3000 W m-2
- Shunt Resistor
- Adjustable, 40.2 to 90.2 ohm
(factory set to the above sensitivity)
- Stability
- < ±2% change over a 1 year period
- Response Time
- 10 μs
- Temperature Dependence
- 0.15% per °C
(maximum)
- Cosine Correction
- Cosine corrected up to 80° angle of incidence
- Operating Temperature Range
- -40° to +65°C
The overmolding that protects the completion circuit in the cable may crack if the temperature drops below -40°C. - Relative Humidity Range
- 0 to 100%
- Detector
- High stability silicon photovoltaic detector
(blue enhanced)
- Sensor Housing
- Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware
- Diameter
- 2.38 cm
(0.94 in.)
- Height
- 2.54 cm
(1.00 in.)
- Weight
- 28 g
(1 oz)
Common Accessories
(2)LI2003S
Pyranometer Base and Leveling Fixture
The LI2003S Pyranometer Leveling Base is required to attach this sensor to our CM225 Solar Sensor Mount. The LI2003S levels the sensor in the horizontal plane, helping to ensure accurate solar radiation measurements.
OrderableCM225
Solar Sensor Mounting Stand
The CM225 is used to attach the LI2003S leveling base to a crossarm, mast, or pole (1.0" to 2.1" OD).
Orderable
Services
(2)16561
LI-COR Sensor Calibration with Data
This service requires an RMA (Return Material Authorization) from Campbell Scientific. The sensor is function tested and inspected for damage at Campbell Scientific, Inc. (CSI). Then it is sent to Apogee Instruments for calibration, where it is compared against references traceable to the National Renewable Energy Laboratory (NREL) in Golden, Colorado. The sensor is then returned to CSI so the shunt resistor in the cable’s millivolt adapter can be adjusted to meet specified sensitivity. A calibration certificate is provided, which shows “as received” and “as returned” measurements.
Orderable33476
Solar Sensor ISO 17025 Accredited Calibration to ASTM E824 with Data
The 33476 calibration service is performed using a reference group of pyranometers traceable to World Radiometric Reference (WRR). This calibration is ISO 17025 accredited to ASTM E824 standard.
Orderable
Compatibility
Mounts
To ensure accurate measurements, the sensor should be leveled using a LI2003S leveling fixture, which incorporates a bubble level and three adjusting screws. The LI2003S leveling fixture mounts to a tripod or tower using the CM225 mount. For most applications, Campbell Scientific recommends attaching the CM225 to a CM202, CM204, or CM206 crossarm. The CM225 can also be attached to a tripod or tower mast.
Data Logger Considerations
One differential analog input channel per probe is required.
Compatible Products
(1)
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Services Available
- Repair
- No
- Calibration
- Yes
- Free Support
- No