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ac-s
The AC-S provides in-situ optical data of beam transmission and absorption over a minimum of 75 wavelengths in real-time. From climate modeling and ocean color validation, to carbon cycling, this broad spectrum attenuation sensor, with its LED installation, will enable you to gather more data without it leaving the water, allowing you to make the most informed decisions. AC-S is the top tier optical instrument SBS produces, and one that has no equal in the market.
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Key Features
- The LED lamp provides the sensor with a known 10,000 hour lifetime Increased resolution (reduction of noise) of the A and C measurements in the “blue” wavelengths.
- The turnaround time will be more consistent and faster by using a more reliable technology. This keeps the sensor in the water longer, and means you can garner more data!
- Individual WLED assembly characterization that includes a 48 hour burn in, temperature test (-10 – 50 deg), and a shock test.
Parameters Measured
Specifications
| Specification | Value |
|---|---|
| Communication Options | RS-232 , RS-485 , RS-422 |
| Depth Rating (Meters) | 500m, 5000m |
| Power Source | External |
| Housing Material Options | Acetal copolymer, Titanium |
| Connector | MCBH |
| Sampling Rate | 4 scans/second |
| Power Consumption | 0.83 A @ 12v nominal |
| Accuracy | ± 0.01 m-1 |
| Software | Compass |
| Resolution | 4 nm |
| Biofouling Protection | Optional |
Resources
Accessories
Curious what accessories and spares you can purchase for the ac-s? Get in touch with our experts for more information.
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FAQs
Why does the specified range of the ECO BB sensors (expressed in m^-1) not match the maximum output calculated from my calibration sheet (expressed in m^-1 sr^-1)?
Why does the specified range of the ECO BB sensors (expressed in m^-1) not match the maximum output calculated from my calibration sheet (expressed in m^-1 sr^-1)?
The back-scattering measurements are a portion of the total beam attenuation coefficient of the water being sampled. The beam attenuation is measured during the back-scattering calibration. Therefore, the range specification on the data sheet for the BB sensor (0 – 3 or 0 – 5 m^-1) refers to the beam attenuation coefficient range of the calibration.
There is a note on the data sheet that further explains the backscattering specification:
*Backscattering specifications are given in beam cp (m^-1) based on the regression of the response of the instrument relative to the beam cp measured at the coincident wavelength using an ac-s spectrophotometer. Scale factors for backscattering incorporate the target weighting function and the solid angle subtended.
There is a note on the data sheet that further explains the backscattering specification:
*Backscattering specifications are given in beam cp (m^-1) based on the regression of the response of the instrument relative to the beam cp measured at the coincident wavelength using an ac-s spectrophotometer. Scale factors for backscattering incorporate the target weighting function and the solid angle subtended.