Wet Labs ECO VSF, User Manual

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4 ECO VSF User’s Guide (VSF) Revision AN 14 Sept. 2011
1.3 Optional Equipment
1.3.1 Test Cable
A test cable is supplied with each unit. This cable includes three legs:
1.
A connector for providing power to the instrument from a user-supplied 9V battery.
2. A DB-9 serial interface connector.
3. A six-socket in-line connector for providing power and signal to the instrument.
1.3.2 Copper Faceplate
ECO meters are optionally equipped with copper faceplates to improve the meter’s
resistance to biofouling. Refer to Section 3.5.1 for important details on maintenance and
cleaning.
1.3.3 Bio-wiper™ and Copper Faceplate
The BBS and BBBS are equipped with an integrated non-contact anti-fouling bio-wiper ™
and copper faceplate for use in extended deployments. This wiper can be manually
controlled by a host controller package, or can perform autonomously as part of a pre-
programmed sampling sequence upon instrument power-up. The rate of opening and closing
depends on both temperature and depth.
Refer to Section 3.5.1 for important details on the maintenance and cleaning of the
Bio-
wiper ™ and copper faceplate.
WARNING!
Do NOT rotate the Bio-wiper ™ manually. This can damage the wiper motor and will void
the warranty.
1.3.4 Batteries
ECO units with internal batteries are supplied with six 9-volt Lithium batteries as their
power source. They can use either standard alkaline cells for a total capacity of
approximately 1000 mA-hrs, or for longer deployments, LiMnO
2
cells to achieve more
than 2000 mA-hrs of operational capacity. Actual total usage time of the internal batteries
is a function of several parameters. These include nominal water temperature, sequence
timing, sample periods, and total deployment duration.
1.3.5 External Thermistor
ECO meters are optionally equipped with an external thermistor. The thermistor is
calibrated at WET Labs and the calibration coefficients are supplied on the instrument’s
calibration sheets. Thermistor output is in counts and can be converted into engineering
units using the instrument’s device file and ECOView software or the raw data can be
converted in the user’s software (e.g. MATLAB or Excel) using the calibration equation:
Temperature (deg C) = (Output * Slope) + Intercept
1.3.6 Pressure Sensor
ECO meters are optionally equipped with a strain gauge pressure sensor. The pressure
sensor is calibrated at WET Labs and the calibration coefficients are supplied on the