5.1.7 User-specific internal sensor characterization
W A R N I N G
FDOM sensors use an ultraviolet LED light source. Do not look directly at a UV LED when it is on.
It can damage the eyes. Keep products that have UV LEDs away from children, pets, and other
living organisms. Wear polycarbonate UV-resistant safety glasses to protect the eyes when a UV
LED is on.
The manufacturer characterizes the internal
ECO
sensor but the user can replace these
values with application-specific values.
1.
Make sure that the WQM is in
In Standby
.
2.
Go to the
Help
menu and select
Enable Internal ECO Setup
.
3.
Go to the
Advanced
menu and select
Setup Internal ECO
.
4.
Push
Get Internal ECO Setup from WQM
.
The characterization values stored in the sensor can be viewed in the ECO Signal 1,
ECO Signal 2, and ECO Signal 3 areas of the tab.
Note: Not all sensor models have three signals.
5.
Push
Edit
in the ECO Signal area.
Edit
changes to
Done
.
6.
Change the "Scale" and "Offset" values.
7.
Push
Done
.
8.
Push
Send New ECO Calibration
.
The sensor Status area shows
Loading ECO Calibration
.
9.
Push
Done/Close Tab
to hide the
Internal ECO
tab.
5.1.8 Uninterruptible Power Supply (UPS)
The WQM has a UPS that comes on if the sensor loses power while data is being
collected. The UPS will supply power to the sensor long enough to save recently
collected data, close any files that are open, and store the required operation values. The
UPS does not supply power to the internal ECO sensor: the wiper on an FLNTU will stay
in an open position and bio-fouling can occur.
If power is supplied to the sensor within 1 second of removal, the sensor will start data
collection again.
The UPS has a 9-volt lithium battery. The battery can supply power for thousands of
shutdown cycles but it does have a limited time of operation. The manufacturer
recommends that the user return the sensor for battery replacement every 3 years. Note
Reference
35
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