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SP-522-SS Modbus Digital Output Thermopile Pyranometer

Updated:2022-12-22

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  • Brand:APOGEE
  • Model: SP-522-SS
  • Description: The SP-522-SS is an upward-looking thermopile pyranometer with a digital signal using Modbus RTU protocol over RS-232 or RS-485. The sensor incorporates a blackbody thermopile detector and acrylic dif
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Product Details

SP-522-SS Overview of Modbus Digital Output Thermoelectric Reactor solar Radiation Intensity meter:

User's Manual

Apogee Instruments SP-522 pyranometers consist of a thermopile detector, acrylic diffuser, heater, 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 measurement of shortwave radiation in outdoor environments. The SP-522 model outputs a digital signal using Modbus RTU communication protocol over RS-232 or RS-485.

The SP-522-SS is an upward-looking thermopile pyranometer with a digital signal using Modbus RTU protocol over RS-232 or RS-485. The sensor incorporates a blackbody thermopile detector and acrylic diffuser 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.

SP-610-SS drawings:

Specifications of SP-610-SS:

ISO 9060:2018 Class C (first response)
Input Voltage Requirement 5.5 to 24 V
Average Max Current Draw 4 mA (heater off); 30 mA (heater on)
Calibration Uncertainty at 1000 W mˉ² Less than 3 %
Measurement Repeatability Less than 1 %
Long-term Drift (Non-stability) Less than 2 % per year
Non-linearity Less than 1 % (up to 2000 W mˉ²)
Detector Response Time 0.5 s (baudrate dependant)
Field of View 180˚
Spectral Range 385 to 2105 nm (wavelengths where response is 50 % of maximum)
Directional (Cosine) Response Less than 30 W mˉ² at 80˚ solar zenith
Temperature Response Less than 5 % from -15 to 45 C
Zero Offset A Less than 5 W mˉ²; Less than 10 W mˉ² (heated)
Zero Offset B Less than 5 W mˉ²
Operating Environment -50 to 80 C; 0 to 100 % relative humidity; can be submerged in water up to 30 m
Dimensions 30.5 mm diameter, 37 mm height
Mass (with 5 m of cable) 140 g
Cable 5 m of two conductor, shielded, twisted-pair wire, additional cable available in multiples of 5 m; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires
Warranty 4 years against defects in materials and workmanship
Manufactured Made in the USA

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