Low power consumption
RBRcoda3 PAR, RBRcoda3 rad
PAR and narrow-band radiometers
The RBRcodaยณPAR and RBRcodaยณย rad optical radiometers feature a wide dynamic range, optimized cosine response, and excellent low-light detection, making them ideal for both moored and profiling applications. The sensors are easy to integrate into any RBR multi-parameter instrument, or connect directly via RS-232.
The RBRcodaยณPAR sensor provides uniform response to light in the PAR spectral range, while the RBRcodaยณrad is available in a variety of narrow-band light channels and channel widths.
- Low power consumption
- High accuracy
- Wide dynamic range
- Depths up to 2000m
- RS-232 output
- Compact and lightweight
Loggingย RBRsolo3ย radiometersย available

Features & Configurations
Optional Configurations
RBRcodaยณ PAR | photosynthetically active radiation, uniform response between 400 and 700nm, depths up to 1000m |
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RBRcodaยณ PARโ|โdeep | photosynthetically active radiation, uniform response between 400 and 700nm, depths up to 2000m |
RBRcodaยณ rad | narrow-band radiation, 10nm- and 25nm-wide wavelength channels from 413nm to 560nm, depths up to 1000m |
RBRcodaยณ radโ|โdeep | narrow-band radiation, 10nm- and 25nm-wide wavelength channels from 413nm to 560nm, depths up to 2000m |
Specifications
Connector | MCBH-6-MP |
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Diameter | ~25mm |
Length | ~270mm (standard) |
Depth rating |
1000m (plastic) 2000m (titanium) |
Weight (air) |
170g (plastic) 330g (titanium) |
Weight (water) |
40g (plastic) 200g (titanium) |
Supply voltage |
6 to 18V (12V nominal) |
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โค2Hz sampling |
77mJ/sample |
>2Hz sampling |
15mA/180mW at 12V |
Dynamic range | >5.5 decades |
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Initial accuracyFootnoteย 1 | ยฑ2% |
Linearity | ยฑ1% |
Operating temperature range | -5ยฐC to 35ยฐC |
Cosine response error (water) | ยฑ5% at 0-60ยฐ ยฑ10% at 61-82ยฐ |
Azimuth error (water) | ยฑ1.5% at 45ยฐ |
Out-of-band rejectionFootnoteย 2 | >25dB (typical), OD 2.5 |
(1) RBR calibrates radiometers with NIST traceable references.
(2) Out-of-band rejection and resolution are wavelength dependent for narrow-band radiometers.
Wavelength range | 400 to 700nm |
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Full scale range | 0-5000ยตmol/mยฒ/s (minimum) |
Resolution | ยฑ0.010ฮผmol/mยฒ/s |
Centre wavelengths (CWL)Footnoteย 3 | 413 / 445 / 475 / 488 / 508 / 532 / 560nm |
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Full width at half-maximum (FWHM) | 10nm (for all CWLs except 475nm) 25nm (for CWL 475nm only) |
Full scale range | 0-400ฮผW/cmยฒ/nm (minimum) |
ResolutionFootnoteย 4 | ยฑ0.001ฮผW/cmยฒ/nm |
(3) Other CWL options within the 400-1100nm range are available upon request. Contact RBR for more information.
(4) Resolution is wavelength dependent for narrow-band radiometers.
Note: Dark offset is internally temperature-compensated.
