MULTIMETER: YSI-ProDSS
EQUIPMENT NEEDED
• YSI-ProDSS multimeter
• (Sampling wand, float, tub, scoop)
• Data sheet, clipboard, pencil
Storage notes:
•
The battery may be damaged if kept in an
environment outside the range of -20 - 60°C
(-4° - 140°F).
•
When taking the ProDSS out into the field,
travel with ¼ cup of tap water in the
calibration cup.
•
When storing the ProDSS for longer than
one week, if possible, store in expired pH4
buffer solution, with the cup upright and the
probes submerged in the buffer.
NOTE 2015-16:
We purchased one instrument
in summer 2015 in the expectation of
purchasing a second and making it our
standard field water-quality testing equipment
in summer 2016. Meanwhile, we are
experimenting with settings and field
instructions, and recording values side-by-side
with our current equipment.
INITIAL INSTRUMENT PREPARATION:
1.
CABLE CONNECTION
Inspect the cable connection between the
handheld meter and the cable. If cable is not
connected to the meter,
make sure the
connectors are clean and dry before
connecting!
If connecters are clean and dry,
align the keys on the cable assembly connector
with the slots on the instrument connector.
Push together firmly, and
then twist the outer ring
clockwise until it locks
into place. The metal pin
should “snap” into place
and be visible through
small hole in the outer
ring (see image).
2.
SENSORS AND GUARD CHECK
If any of the individual sensors are not
connected, refer to “Settings and
Troubleshooting” section for sensor installation.
If there is an empty “slot” with no sensor
installed,
a port plug or sensor must be
installed or the bulkhead will be
damaged!
1. Remove calibration cup by backing off a bit
on the retaining nut in a counterclockwise
direction (see diagram). DO NOT REMOVE
THE RETAINING NUT; JUST LOOSEN IT!
(For a 4-second video, see
https://youtu.be/Z6b7YF1ONo0.)
2. Slide the cup off and set it aside on its pack,
slightly angled to hold the water inside.
3. Firmly hold the bulkhead with one hand and
turn the sensor guard counter-clockwise
until completely unthreaded. Set aside the
sensor guard in a clean dry place. Use
caution once the sensors are exposed!
4. Conduct a quick visual inspection of the
sensors; clean any debris on the sensor tips
with a lint-free cloth and rinse with water
.
Carefully “test” the connection of each
sensor by grasping the sensor near the
bulkhead between your thumb and finger,
and try to turn the sensor to determine if it
is loose. If the sensor moves or twists at
all (sensors should firmly be in place),
Do not
remove
this ring!
Simply
loosen
the
ring to
slide
the
entire
cup off.
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