SP-422-SS Modbus Digital Output Silicon-cell Pyranometer
- SKU: Apogee-SP-422-SS
Description
The SP-422-SS sensor outputs a digital signal using Modbus RTU protocol over RS-232 or RS-485. 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.
Details & Specifications
| Make | Apogee |
|---|---|
| Model | SP-422-22 |
| General Specifications | :- |
| Dimension | 30.5 mm diameter, 37 mm height |
| Output | Modbus |
| Power supply | 5.5 T0 24 V DC |
| Classification | ISO 9060:2018: Class C (fast response) |
| Long-term instability | Less than 2 % per year |
| Non-linearity | Less than 1 % up to 2000 W m⁻² |
| Operating conditions | -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to 30 m |
| Spectral range | 360 to 1120 nm |
| Temperature Response | 0.04 ± 0.04 % per C |
| Response time (95%) | Less than 200 ms |
| Cable length | 5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires |
| Weight (Mass) | 140 g (with 5 m of cable) |
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