Industrial PAR Photosynthetically Available Radiation Sensor 4-20mA RS485
IQPAR photosynthetically active radiation sensor is mainly used to measure the photosynthetically active radiation of natural light in the wavelength range of 400-700nm.
IQPAR use precision optical detectors and has an optical filter of 400-700nm, when natural light is irradiated, a voltage signal proportional to the intensity of the incident radiation is generated, and its luminous flux density is proportional to the cosine of the direct angle of the incident light.
Features:
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PAR (Photosynthetically Available Radiation) sensor measure 400 ~ 700nm wavelength nature light’s Photosynthetically Available Radiation.
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When nature light shine on the sense area, it will generate a signal base on the incidence radiation strength.
Specifications:
- Input Power: DC 5 ~ 24v
- Interface: RS485 and 4-20mA
- Response Spectrum: 400～700nm
- Measure range: 0～2500μmol/m2•s
- Resolution: 1μmol/m2•s
- Accuracy: ±2%
- Yearly Stability: ≤±2％
- Working Temperature: -30℃～75℃
- Working Humidity: 10～90%RH
- Power Consumption: 3mA @ 12v
Modbus Mapping:
Default RS485 Address: 0x0A
Modification Address:
master→slave
| Original Address |
Function Code |
Register Address High |
Register Address Low |
Start Address High |
Start Address Low |
CRC16 Low |
CRC16 High |
| 0X0A |
0X06 |
0X00 |
0X30 |
0X00 |
0X02 |
0X09 |
0X7F |
Query Data:
master→slave
| address |
function code |
start register address high |
start register address low |
Register length high |
Register length is low |
CRC16 Low |
CRC16 High |
| 0X0A |
0X03 |
0X00 |
0X00 |
0X00 |
0X01 |
0X85
|
0X71 |
slave → master
| address |
function code |
Data length |
Register 0 data high |
Register 0 data low |
CRC16 |
CRC16 |
| low |
high |
| 0X0A |
0X03 |
0X02 |
0X00 |
0XC8 |
0X1C |
0X13 |
| |
|
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Photosynthetically efficient：200μmol/m2•s
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