Low power consumption
RBRquadrante: four-channel radiometer
The RBRquadrante is a multi-spectral radiometer with four channels, capable of measuring multiple wavebands simultaneously, including PAR. It features a high dynamic range, optimized cosine response, and excellent low-light detection, while power consumption and depth rating have been tailored for use in a wide variety of applications.
The RBRquadrante supports measurement of four wavebands within the same sensor package. Tolerant of a wide ranging power supply, data are streamed via RS-232 on the MCBH-6-MP connector. A variety of adaptors make it easy to integrate into existing vehicle payload bays.
- Low power consumption
- High accuracy
- High dynamic range
- Depths up to 2000m
- RS-232 output
- Compact and lightweight
Features & Configurations
Optional Configurations
The RBRquadrante is available with any four of the following channels:
- PAR (photosynthetically active radiation), uniform response over 400-700nm
- Narrow-band radiation, variety of narrow-band channels
Specifications
| Connector | MCBH-6-MP |
|---|---|
| Housing | Titanium |
| Diameter | 63mm |
| Length | 57mm, 93mm (with connector) |
| Depth rating | 2000m |
| Weight (air) | 435g (in air), 250g (in water) |
| Sampling rate | Up to 32Hz |
| Supply voltage | 4.5 to 30V (12V nominal) |
|---|---|
| Sampling | 4mJ/sample (4Hz or slower) 3mA/36mW (8Hz or faster) |
| Sleep current | 10μA |
| Dynamic range | >5.5 decades |
|---|---|
| Initial accuracyFootnote 1 | ±2% |
| Linearity | ±1% |
| Operating temperature range | -5°C to 35°C |
| Cosine response error (water) | ±5% at 0-60° ±10% at 61-82° |
| Azimuth error (water) | ±1.5% at 45° |
| Out-of-band rejectionFootnote 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 |
|---|---|
| Full scale range | 0-5000µmol/m²/s (minimum) |
| Resolution | ±0.010μmol/m²/s |
| Centre wavelengths (CWL)Footnote 3 | 380 / 413 / 445 / 475 / 488 / 508 / 532 / 560nm |
|---|---|
| Full width at half-maximum (FWHM) | 10nm (25mm for CWL 475nm) |
| Full scale range | 0-200μW/cm²/nm (full sun) |
| ResolutionFootnote 4 | ±0.001μW/cm²/nm |
3 Other CWL options within the 300-1100nm 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.
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