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SR15 일사계 | ||
---|---|---|
Model | SR15-D1 | SR15-D2A2 |
Measurand | Hemispherical solar radiation |
|
ISO classification | first class pyranometer / spectrally flat class B |
|
Zero offset a | 5 W/m2 unventilated |
|
Calibration traceability | to WRR |
|
Spectral range | 285 to 3000 x 10-9 m |
|
Calibration uncertainty | < 1.8 % (k = 2) |
|
Rated operating voltage | 5 to 30 VDC |
|
Rated operating Temperature range |
|
|
Communication protocol | Modbus over 2-wire RS-485 |
Modbus over TTL |
Output | irradiance in W/m2 and instrument body temperature in °C |
|
Analogue output | - |
4-20 mA current loop
|
Response time | < 10 s |
|
Standard cable length | 5 m |
|
Levelling | Optional spring-loaded levelling, with / without tube mount |
|
On-board heater | included |
not included |