Page 1
o-ring
o-rings
A
Stirrer
OFF ↔ ON
Stir bar compartment
Motor compartment
(sealed)
Battery
compartment
End cap
Multi-Parameter
Water Quality
TROLL
Information Sheet
Catalog No. 42210
NOSE CONE STIRRER
APPLICATION
Battery-powered magnetic stirrer provides continuous agitation of sample during
calibration or deployment in slow-moving or stagnant water. Attaches to the front
end of the MP TROLL in place of the nose cone, or to the Calibration Cup. Elimi-
nates potential sensor cross-contamination and increases the rate of flow through
the restrictor. Guard plate retains stir bar in fast-moving water and protects it from
debris.
PHYSICAL DESCRIPTION
Wetted materials Delrin®, Teflon
Dimensions 4.6 cm (1.8 in) dia. x 19 cm (7.5 in) long
Weight 0.575 kg (1.3 lb), with batteries
Operating voltage 1.5 - 9.0 V, nominal 3 V
Motor speed 950 rpm at free load, 350-430 operating rpm
Stall torque 32 g-cm
Current 0.052 amps
Output 0.073 watts
Stir bar Teflon-coated, magnetic, 7.9 mm (5/16 in) dia. x
25.4 mm (1 in) long with moldring
Battery type 2 standard alkaline D-cells
Est. battery life 3 months continuous operation
Pressure rating 150 psi
®
®
Body
Body
CONNECTIONS
A
The threads at the stir bar end attach to the restrictor at the front end of the MP
TROLL (nose cone removed), or to the Cal Cup.
GUIDELINES AND PRECAUTIONS
Cal Cup
Restrictor
• To activate the stirrer, tighten the end cap about ¼ turn. This starts the motor;
the stir bar will begin to spin. To stop the motor, back off the cap until the stir bar
stops spinning.
• Replace batteries with 2 standard alkaline D-cells, – toward the end cap,
+ toward the stir bar compartment.
Stirrer
Stirrer
• When attaching to the restrictor or Cal Cup, be careful not to over-tighten.
• The stir bar guard may be removed for cleaning when necessary. Insert the
sensor removal tool into the center rings and pop the guard out.
• Inspect o-rings regularly; replace if they show evidence of wear or damage (o-
rings & lubricant available from In-Situ Inc. or your distributor).
1 800 446 7488
(toll-free, US and Canada) or 970 498 1500 www.in-situ.com
Due to continuing product development this information is subject to change without notice. In-Situ, the In-Situ logo, and TROLL are trademarks or registered trademarks of In-Situ Inc. Teflon and Delrin are registered trademarks of E. I. DuPont de Nemours and Company. Copyright © 2002, 2005 by
In-Situ Inc. All rights reserved.
0042215 rev. 001 09/05
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