System Operation Manual
SAT-DN-00434, Rev. B
LOBO
2017-05-16
Page 27 of 86
Copyright
2017 Sea-Bird Scientific. All rights reserved.
4.4
WET Labs Sensors
A variety of WET Labs underwater sensors have been integrated into the LOBO system, as described in the
following sections.
4.4.1
WET Labs ECO-CDS
The ECO-CDS is a sensor manufactured by WET Labs to measure relative CDOM concentrations by
measuring the fluorescence in a sample volume of water. The sensor has an anti-fouling wiper that opens
and cleans the optical window before every measurement. This sensor can be seen mounted in a LOBO
frame below. Example specifications are summarized below in Table 3.
Figure 14: WET Labs ECO-CDS CDOM Sensor in LOBO frame
Table 3: Example ECO-CDS Specifications
Manufacturer
WET Labs
Model
ECO-CDS
Input Voltage
7
–
15 Vdc
Typical Input Current
80 mA (140 mA with bio-wiper)
Optical (Fluorescence)
Wavelength excitation
370 nm
Wavelength emission
460 nm
Sensitivity
0.09 ppb
Range (typical)
0.09 to 500 ppb
Linearity
99% R
2
Operating Temperature
0
–
30 °C
Operating Depth
300 m
Sampling rate
To 8 Hz
Serial Interface
RS-232 at 19200 bps
Dimensions
Ø2.5 in x 5.25 in (Ø6.3 cm x 13.3 cm)
Weight (in air)
1.1 lbs (0.5 kg)
Weight (in water)
0.19 lbs (0.08 kg)
Generally speaking, no changes to the factory default settings for the ECO sensors are required, although
the user may wish to adjust the sample rate if higher temporal resolution or longer averages are desirable.
During port configuration, the STOR-X must be informed that an ECO-sensor is attached. This allows the
STOR-
X to send a “stop” command to the sensor so that the shutter will close prior to power removal.
ECO-CDS (CDOM)
