In-situ Turbidity Wiper User Manual download pdf

Multi-Parameter

Water Quality

TROLL

Information Sheet

Catalog No. 0044510, 0044520, 0044530

(over)

Alignment

mark

2 3 4

Turbidity Sensor

Detector Emitter

P3 P4

Temperature

Install wiper in

port P3

Wiper

bracket

Fig. 2. Wiper properly installed

Fig. 3. Direction of wiper rotation

Fig. 1. The MP TROLL sensor block

TURBIDITY WIPER

INSTALLATION & MAINTENANCE

The turbidity wiper will function properly only when

installed in port P3.

When an RDO

dissolved oxygen sensor is installed, be sure to pull

the slack in the RDO adapter cable back against the MP TROLL

body so it will not interfere with the wiper’s rotation.

Do not attempt to move the wiper head by hand. Wiper

movement is software-controlled.

DESCRIPTION

An optional accessory whose movement is software-controlled to help keep the

optical windows of the Multi-Parameter TROLL's turbidity sensor free of bubbles and

fouling. A bracket secures the wiper to the turbidity sensor and keeps it stable.

EEPROM chip enables wiper identification in software.

INSTALLATION

1. Remove the restrictor or Cal Cup from the front end of the MP TROLL. This allows

access to the sensor block depicted in Fig. 1.

2. Use the sensor removal tool to remove the sensor or plug from port P3. Keep the plug

for future use. You may need to remove other sensors or plugs to access port P3.

3. Check lubrication of the o-rings on the connector end of the wiper.

4. Align the mark on the side of the wiper body with the mark on the sensor block

beside port P3.

5. Firmly press the wiper into the port until you feel it dock with the port connector. When

properly inserted a small gap (width of the sensor removal tool) remains

between the widest part of the wiper and the instrument body, for ease of

removal.

6. Press the wiper into the spring-clip bracket attached to the turbidity sensor.

WIPER MOVEMENT

When the turbidity sensor is off, the wiper is “parked” over port P4 (Fig. 2). When a

turbidity measurement is requested, the wiper head passes over the optics, sweep-

ing them clean, and returns to its parking place. One “wipe” consists of a 360°

counter-clockwise sweep (viewed from the sensor end, as shown in Fig. 3). Wiping

occurs automatically before turbidity readings—manual reads, profiling, calibration,

and tests—that are more than 15 seconds apart. If readings are less than 15 sec-

onds apart, the wiper will wipe once, before the first reading. A single wipe may be

initiated in the software when the instrument is idle to clear the turbidity optics of

bubbles or debris.

1 2

TURBIDITY WIPER 1
1 800 446 7488 2

Summary of Contents

Page 1 - TURBIDITY WIPER

Multi-ParameterWater Quality TROLL®Information SheetCatalog No. 0044510, 0044520, 0044530(over)Alignmentmark12 3 4Turbidity SensorDetector EmitterP2P

Page 2 - 1 800 446 7488

1 800 446 7488(toll-free, US and Canada) or 970 498 1500 www.in-situ.comDue to continuing product development this information is subject to chang

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In-situ Turbidity Wiper User Manual

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