System Operation Manual
SAT-DN-00434, Rev. B
LOBO
2017-05-16
Page 29 of 86
Copyright
2017 Sea-Bird Scientific. All rights reserved.
Figure 15: WQM in LOBO Frame
Table 5: Example WQM Specifications
Manufacturer
WET Labs
Model
WQM
Input Voltage
12-18 Vdc
Input Current
0.275 A (typical)
Measurement Ranges:
Conductivity
0
–
9 S/m
Temperature
-5° to +35°C
Pressure
0
–
200 m (optional sensor)
Oxygen
0
–
200% mg/l
Fluorescence
0
–
50 µg/l (typical)
Turbidity
0
–
25 NTU (typical)
Depth Rating
200 m
Sample Rate
1 Hz
Serial Interface
RS-232 at 19200 bps
Dimensions (approx)
56.8 x 15.2 x 15.2 cm
Weight (in air)
5.4 kg
Weight (in water)
1.8 kg
Normally, if integrated by Sea-Bird Scientific, an ICD or other documentation describing the as-shipped
configuration of the WQM, with a procedure for reconfiguration if required, will be provided. Generally,
the WQM will be reconfigured to give consistent measurement units across systems.
An important point to note is that the dissolved oxygen sensor can take a significant amount of time to
stabilize, depending on the sample flow rate and the water temperature. This is accommodated by
adjusting the STOR-X schedule file to turn on the WQM for an extended period prior to acquiring data.
During port configuration, the STOR-X must be informed that a WQM sensor is attached. This allows the
STOR-
X to send a “stop” command to the sensor so that the
ECO-FLNTUS shutter will close prior to power
removal, and allow the WQM to perform a bleach injection.
4.5.2
WET Labs Cycle PO
4
Sensor
The Cycle PO
4
is a sensor manufactured by WET Labs to measure dissolved phosphate. Figure 16 below
shows the Cycle PO
4
mounted to a Dock LOBO frame in its correct vertical orientation.