In-Situ Turbidity Wiper - Manual (Page 2)

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Due to continuing product development this information is subject to change without notice. In-Situ and the In-Situ logo, Win-Situ, TROLL, BaroTROLL,
RuggedReader, RuggedCable, and RDO are trademarks or registered trademarks of In-Situ Inc., Fort Collins, CO, USA. Copyright © 2004 – 2007 by
In-Situ Inc. All rights reserved.
Multi-Parameter Water Quality TROLL ®
MANUAL WIPE
To perform a manual wipe while the MP TROLL is idle:
1. With the wiper installed in port P3 (as described on the front of this
sheet), connect the MP TROLL to a PC and establish a connection in
Win-Situ or Pocket-Situ.
2. Click to select the TROLL and display all parameters. The wiper will
appear in the Navigation tree along with other installed sensors.
3 Select the Turbidity Wiper in the Navigation tree.
4. Select Wipe in the Information pane. The wiper will pass once over
the turbidity sensor optics and return to its home position.
WIPER MAINTENANCE
The cotton wiper pad will require replacement periodically to maintain its effective-
ness in cleaning the turbidity sensor optics. The entire head may be replaced, or just
the pad. In either case, the wiper head will need to be removed. A hex wrench is
supplied for this purpose. You do not need to remove the entire wiper; leave the
wiper body installed in port P3.
Removing the Wiper Head
With the wiper parked over port P4, loosen the set screw on the wiper head until you
can grasp the wiper head and gently pull it out.
Replacing the Wiper Pad
1. Remove the wiper head as above. Remove and discard the used pad.
2. Insert a new pad into the slots with the smooth side facing out, and pull to
eliminate slack. Excess material may be trimmed close to the wiper head.
3. Place the head on the motor shaft with the pad facing down toward the sensors.
The button at the top of the shaft should be flush with the wiper head surface.
Tighten the set screw against the flat of the motor shaft. Be very careful not to
move the wiper head in a lateral direction by hand after tightening.
4. If convenient, do a manual wipe as described above to ensure the wiper passes
over the turbidity sensor optics properly.
GUIDELINES AND PRECAUTIONS
•
The turbidity wiper will function properly only when installed in port P3.
• Do not attempt to move the wiper head by hand. Wiper movement is software-
controlled.
• For best results, install 3.6 V lithium D cells in the TROLL when running a wiper.
• Wiper pressure is properly set when the pad just brushes the sensor optics.
• Replace the pad when it becomes too soiled to clean the sensor optics.
• When an RDO optical dissolved oxygen sensor is installed, check to see that the
RDO adapter cable is pulled back out of the way of wiper movement.
• Refer to the Turbidity section of the Multi-Parameter TROLL Operator's Manual
for complete information on the turbidity sensor and wiper operation.
3
4
To remove the wiper head, use the supplied
hex wrench to loosen the set screw
ORDERING INFORMATION CATALOG NO.
Complete Wiper Kit ................... 0044510
Replacement Wiper Head ........ 0044520
Wiper Pad Replacement Kit ..... 0044530
0044512 rev. 007 08/07
TURBIDITY WIPER
Catalog No. 0044510, 0044520, 0044530
TIP: 15 seconds are alotted for a full wipe of
the turbidity sensor optics. This time is
generous to allow for slower movement at
very low temperatures.
If readings are more than 15 seconds apart, the
turbidity sensor will be wiped automatically before
each reading. If readings are less than 15 seconds
apart, the wiper will wipe the windows just once,
before the first reading.
MP TROLL 9000 users: The turbidity
wiper is supported by TROLL 9000
hardware version 3.0 and higher,
firmware version 1.46 and higher. Do not
attempt to operate the wiper with earlier hardware/
firmware. The wiper with a white PVC head is not
supported by firmware versions after 1.39.