240-SP Silicon-Cell Pyranometers
The 240-SP Silicon-Cell Pyranometers are calibrated to measure total shortwave radiation. Amplified versions are available in 2.5 volt, 5 volt, and 4-20 mA outputs.
The 240-SP Silicon-Cell Pyranometers are calibrated to measure total shortwave radiation. Amplified versions are available in 2.5 volt, 5 volt, and 4-20 mA outputs.
The 240-SP series pyranometers compare favorably with Class C (previously known as second class) standard pyranometers, but at a fraction of the cost. They have been used successfully for over 20 years in many different field measurement situations, including agricultural, meteorological, and solar energy applications. Featuring a fast response time of less than one second, they are cosine-corrected to get accurate readings even if the sun is at a low zenith level, have a self-cleaning head, and are designed to be rugged for continuous outdoor use in all climates.
The 240-SP-230 All Season Heated Pyranometer has a 0.2 watt heater to keep water (liquid and frozen) off the sensor and minimize errors caused by dew, frost, rain, or snow blocking the optical path.
The new 240-SP-420 Smart Pyranometer can be connected directly to a computer for taking spot measurements or graphing and datalogging real-time shortwave radiation using the included software. The sensor can also act as a stand-alone shortwave radiation datalogger by simply connecting it to any standard 5 Vdc USB power plug. Internal memory within the sensor head is capable of storing 10,000 user-specified periodic measurements that can be downloaded as a CSV file to a computer for analysis. Consult NovaLynx for more information.
The pyranometers can be secured to the 240-AL-100 Leveling Plate via a threaded insert located at the bottom of the sensor. Three bolts help level the plate.
The 240-153-SP Tower Mount is used to attach the sensor to a mast or pipe. A bubble level on the arm ensures that it is level.
Each sensor, except the USB model, includes a 30 cm IP68 marine-grade stainless steel cable connector from the head to simplify removal and replacement of the sensor for maintenance and recalibration. The sensor can be purchased without the connector; however, delivery will take longer, and the wire colors will be different.
Specifications
- Calibration uncertainty: ± 5%
- Measurement repeatability: Less than 1%
- Field of view: 180°
- Spectral range: 360 to 1120 nm
- Directional (Cosine) response: ± 5% at 75° zenith angle
- Temperature response: 0.04 ± 0.04% per degree Centigrade
- Operating environment:
- -40 °C to +70 °C
- 0 to 100% relative humidity
- Can be submerged in water up to depths of 30 m
- Cable:
- 5 meters of shielded twisted-pair wire, additional cable available in multiples of 5 meters
- Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions)
- Pigtail lead wires
- Warranty: 4 year against defects in materials and workmanship
240-SP-110-SS
- Output: 0-400 mV (0-2000 W/m²)
- Sensitivity: 0.20 mV per W/m²
- Input power: None, self-powered
- Dimensions: 1″ Dia x 1.1″ H (24 x 28 mm)
- Weight (including 5 m cable): 3.2 oz (90 g)
240-SP-212-SS
- Output: 0-2.5 V (0-2000 W/m²)
- Sensitivity: 1.25 mV per W/m²
- Input power: 5 to 24 Vdc @ 300 uA
- Dimensions: 1″ Dia x 1.1″ H (24 x 28 mm)
- Weight (including 5m cable): 5 oz (140 g)
240-SP-214-SS
- Output: 4-20 mA (0-2000 W/m²)
- Sensitivity: 0.008 mA per W/m² (offset 4 mA)
- Input power: 7 to 24 Vdc @ up to 22 mA
- Dimensions: 1″ Dia x 1.1″ H (24 x 28 mm)
- Weight (including 5 m cable): 5 oz (140 g)
240-SP-215-SS
- Output: 0-5 V (0-2000 W/m²)
- Sensitivity: 2.5 mV per W/m²
- Input power: 5.5 to 24 Vdc @ 300 uA
- Dimensions: 1″ Dia x 1.1″ H (24 x 28 mm)
- Weight (including 5m cable): 5 oz (140 g)
240-SP-230-SS All Season Heated Pyranometer
- Output: 0-400 mV (0-2000 Wm⁻²)
- Sensitivity: 0.20 mV per W/m²
- Power: 12 Vdc @ 15.4 mA
- Dimensions (with included stand): 1.2″ Dia x 5″ H (31 x 128 mm)
- Weight (including 5 m cable): 7 oz (192 g)
240-SP-420 Smart Pyranometer with USB Output to PC or Stand-Alone Data Logger
- Output: Logged data via USB 2.0 connector, cable length 4.6 meters
- Resolution: 0.1 W/m²
- Input power: 5 Vdc @ 61 mA (when logging)
- Dimensions: 1″ Dia x 1.3″ H (24 x 33 mm)
- Weight (including 4.6m cable): 3.2 oz (90 g)
