Fluoroprobe
TM
(FL-2) O&M Manual
Product Description
Section 1
The Fluoroprobe
TM
,
FL-2 is an environmental instrument with a newly patented optical
sensor designed for long term monitoring and control of dissolved oxygen in remote and
harsh environments. The probe is designed to provide years of service without the
constant maintenance required by galvanic or polargraphic type probes.
The Fluoroprobe
TM
is housed in a PVC body or stainless steel body with 0-ring sealed
Duran end caps. The entire contents of the probe are potted with epoxy to eliminate any
air space or leaks.
Warning: If any attempt is made to open the probe, the end
connections will break loose and will not be able to be placed back together. The
warranty will then be voided.
The sensor is glass bonded on the end of the probe. There are no parts to replace or
maintain, the lifetime of the sensor is based solely on the user’s application and the
surrounding environment’s effect on the silicone rubber. It is suggested that the sensor be
wiped off as needed, (at least once a month with a soft toothbrush or cloth) for
preventative maintenance. An optional solar powered brush for cleaning the sensor can
be ordered mounted on a float for remote or aquaculture applications. Unlike polargraphic
and Galvanic probes, the Fluoroprobe
TM
sensor does not consume oxygen in order to
operate, and therefore flow is not required across the sensor to continuously monitor
oxygen.
The controller is housed in a weather proof NEMA 4X enclosure for permanent installation
either outdoors or indoors. The enclosure has a clear viewing window and a large backlit
display to read at a glance day or night.
Section 2 Control Settings - Description
The controller has several functions in its program. The rotary switch in the center is the
main selector switch for the controller (See, fig-2 for faceplate Drawing). The D.O. position
is the normal operating position that displays the level of oxygen in the environment to
which the probe is exposed. The HIGH and LOW set points are adjusting pots for the
main relay, which requires a small screwdriver to set. There is an optional pair of relays
with set points for a system with multiple aeration control. These adjusting pots tell the
relays when to turn on and are labeled SET 2 and SET 3 (See fig-3 for Relay Terminal
Location).
The 4 to 20 mA connections are located on (fig-4). Also, information on span adjustments
and wiring for data access.
