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SP-212-SS: Amplified 0-2.5 Volt Pyranometer

Updated:2025-03-13

Brand: APOGEE
Model: SP-212-SS
Description: The SP-212 is an amplified sensor with a 0 to 2.5 V output. The sensor incorporates a silicon-cell photodiode with a rugged, self-cleaning sensor housing design, and high-quality cable terminating in
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Product Details

SP-212-SS: Overview of the amplified 0-2.5 volt solar radiation intensity meter：

User's Manual

The SP-212 is an amplified sensor with a 0 to 2.5 V output. The sensor incorporates a silicon-cell photodiode with a rugged, self-cleaning sensor housing design, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. Typical applications include shortwave radiation measurement in agricultural, ecological, and hydrological weather networks. Sensors are also used to optimize photovoltaic systems. Sensor includes IP68 marine-grade stainless-steel cable connector to simplify sensor removal and replacement for maintenance and recalibration.

Apogee Instruments SP series pyranometers consist of a cast acrylic diffuser (filter), photodiode, and signal processing circuitry mounted in an anodized aluminum housing, and a cable to connect the sensor to a measurement device. Sensors are potted solid with no internal air space and are designed for continuous total shortwave radiation measurement on a planar surface in outdoor environments. SP series sensors output an analog voltage that is directly proportional to total shortwave radiation from the sun. The voltage signal from the sensor is directly proportional to radiation incident on a planar surface (does not have to be horizontal), where the radiation emanates from all angles of a hemisphere.

SP-212-SS drawing：

SP-212-SS specification:

ISO 9060:2018	Class C (fast response)
Power Supply	5 to 24 V DC
Current Draw	300 μA
Sensitivity	1.25 mV per W mˉ2
Calibration Factor	0.8 W mˉ2 per mV (reciprocal of sensitivity)
Calibration Uncertainty at 1000 W mˉ2	Less than 3 %
Calibrated Output Range	0 to 2.5 V
Measurement Repeatability	Less than 1 %
Non-stability (Long-term Drift)	Less than 2 % per year
Non-linearity	Less than 1 % (up to 2000 W mˉ2, maximum radiation measurement is 2000 W mˉ2)
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 C
Operating Environment	-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
Dimensions	30.5 mm diameter, 37 mm height
Mass (with 5 m of cable)	140 g
Warranty	4 years against defects in materials and workmanship
Manufactured	Made in the USA