Solar Insolation (Light Intensity)


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Solar Insolation Sensor

Solar insolation sensor, interface, & mounting hardware


This is an affordable, high quality, solar insolation sensor. The sensor is a Davis Weather 6450 solar radiation sensor with permanently attached interface electronics. The calibrated solar radiation sensor can measure 50 w/m^2 to 1800 w/m^2. The sensor comes standard with a 2 meter (6 foot) shielded cable with wire leads.

Photos of the sensor in action can be found in the photo gallery.


Light Intensity
Range: 50 w/m^2 to 1800 w/m^2
Accuracy: ± 5% of full scale
Stability: ± 2% per year
Transfer Function: watts / m^2 = 598.802 * Vout
Input voltage: 5.0 to 30 volts
Weight: ~175 grams (6.2 ounces) including 2 m (6 ft) shielded cable

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Solar insolation sensor, integrated 2 m (6 ft) cable
Product Photo
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US Price: $190.00 USD
Please call us at +1-507-454-2727 to place an order.

Or click here to order online from Off Grid Options .

Sensor and interface, mounting hardware hardware and integrated 2 m (6 ft) cable with bare wire ends.

Part Number: APRS6567
Shipping Weight: 0.50 pounds
RoHS: compliant
Origin: USA

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Mounting Bracket:

Solar insolation sensor mounting bracket
Product Photo
Click on photo to enlarge
US Price: $30.00 USD
Please call us at +1-507-454-2727 to place an order.

Or click here to order online from Off Grid Options .

A mounting bracket specially designed for the solar insolation sensor.

Package Includes

  • Mounting bracket - machined 6061-T6 aluminum
  • 2 x clips - accommodate 12.7 mm (0.5 in) hose clamps for mounting to masts
  • Set of screws and nuts for mounting on mast or solar panel

Part Number: APRS6557
Shipping Weight: 1.00 pounds
RoHS: compliant
Origin: USA

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One of our customers leveling the solar insolation sensor.

Wind Data Logger Configuration:

The insolation sensor is connected to the "TEMP&ADC" connector on the Wind Data Logger. You will need our RJ-45 Breakout Board to Screw Terminals to connect to our data loggers. The self contained data loggers have a breakout board built in.

To display actual sensor readings on the Wind Data Logger you will need to configure the ADC channels. The following equations are used to convert the voltage output from the sensors to standard units:

Light Intensity:

watts / meter^2=598.802*Vin (ADC M: 598.802 / ADC B: +0.0 / ADC Units: W)

The values in parenthesis should be entered into the ADC setup screens on the Wind Data Logger.

Please Note: The pull-up resistor for the Solar Insolation Sensor's channel on the Wind Data Logger is removed when the sensor is ordered with the Wind Data Logger. If the sensor is ordered separately, please remove the resistor based on the connection below:

Remove Connector:
R2 if connected to USER_ADC_0 (analog 4)
R3 if connected to USER_ADC_1 (analog 5)
R4 if connected to USER_ADC_2 (analog 6)
R19 if connected to USER_ADC_3 (analog 7)

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Example Data:

The following data was captured on 2006-11-09 near Winona, Minnesota, USA.

Solar Insolation

Example solar insolation plot

Raw Data

The raw data used to generate these plots is available as example_wiscoy.csv. Note that this data has been exported from our SQL database and is in a slightly different format than what is stored by the Wind Data Logger.

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In order to improve design and supply the best product possible, specifications may change without notice.