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  9. Vernier STIR User manual

Vernier STIR User manual

1
handheld you can collect data, and view plots of pH vs. volume, first derivative vs.
volume, or second derivative vs. volume.
Specifications
Stirring quantity maximum 800 mL
Speed range 50–1250 RPM
Speed Control: stepless stepless
Stirring platform material ABS plastic
Diameter of stirring platform 10 cm
Weight, without batteries 460 g
Permissible ambient temperature (°C) 0–60 °C
Permissible relative moisture (%) 90%
Power supply 6-volt AC adapter (included)
or four C dry cell batteries
Installation category II
Care and Maintenance
lAlthough the ring stand post is firmly seated in a metal-reinforced, threaded
collar, do not lift the Stir Station by the ring stand post to move it.
lThe Stir Station is a mechanical device with many moving parts. It is best to
turn off the Stir Station motor and the LED lights when the device is not in
use.
lUnder normal operating conditions, the Stir Station will run in excess of
100hours on battery power, without the lights. When you use the Stir Station
with batteries, as the batteries run down you may notice the lights dimming.
The stirring motor will continue to run but the maximum stirring speed may be
compromised.
lThe stirring platform of the Stir Station is made of ABS plastic. ABS, or
acrylonitrile butadiene styrene, was selected because of its strength, rigidity,
and toughness. It has good chemical and stress-cracking resistance. Even so, it
Stir Station
(Order Code STIR)
The Stir Station is a multi-function magnetic stirrer. It includes the
following features
lworks efficiently with beakers from 50 mL to 1 L in size and a
wide range of sizes and shapes of magnetic stirring bars; stirring
capacity of 800 mL in a 1 L beaker
lstirring speed range of 50–1250 RPM
lstirring platform is lit with 3 white, cool LEDs
lring stand post is conveniently positioned and affixed to the
stirrer base, 4 inches from the center of the stirring platform; ideal
for use with the Vernier Drop Counter
lruns on 6-volt DC power adapter (included) or 4 C batteries (not included)
Note: Vernier products are designed for educational use. Our products are not
designed nor are they recommended for any industrial, medical, or commercial
process such as life support, patient diagnosis, control of a manufacturing
process, or industrial testing of any kind.
What's Included
lStir Station unit
lstirring bar (4 cm)
lVernier Microstirrer
lring stand post (46 cm)
l6-volt DC power adapter
Getting Started
1. Connect the 6-volt DC power adapter (included) to the Stir Station and to an
outlet.
2. To use the Stir Station with batteries, remove the battery compartment cover
from the underside of the unit, insert four Cbatteries, and replace the
compartment cover.
3. Install the ring stand post.
4. Place a magnetic stirring bar in the beaker of water and turn on the Stir
Station.
For full product documentation, see
www.vernier.com/start/stir
Using the Product
The Stir Station’s ring-stand post makes it a perfect complement to the Vernier
Drop Counter (shown here) as your students conduct titration experiments. Simply
connect the Drop Counter to the ring stand post and position a buret clamp and
reagent reservoir to deliver the titrant dropwise to a container of liquid. Using
Logger Pro®3 software on a Windows®or Macintosh®computer, DataDrop
program on a TI graphing calculator, or Data Pro (1.15 or newer) on a Palm OS®
2
Safety
The Stir Station contains strong magnets. It should not be used near Cardiac
pacemakers, CDs, cassette tapes, or other similar data storage devices. The Stir
Station is not designed to be used under water.
Disposal
When disposing of this electronic product, do not treat it as household waste. Its
disposal is subject to regulations that vary by country and region. This item should
be given to an applicable collection point for the recycling of electrical and
electronic equipment. By ensuring that this product is disposed of correctly, you
help prevent potential negative consequences on human health or on the
environment. The recycling of materials will help to conserve natural resources.
For more detailed information about recycling this product, contact your local city
office or your disposal service.
Vernier Software & Technology
13979 SW Millikan Way • Beaverton, OR 97005-2886
Toll Free (888) 837-6437 • (503) 277-2299 • Fax (503) 277-2440
[email protected] • www.vernier.com
Rev. 06/17/22
Logger Pro, Data Pro, and other marks shown are our trademarks or registered trademarks in the United States.
TI-Nspire is a trademark of Texas Instruments.
All other marks not owned by us that appear herein are the property of their respective owners, who may or may not
be affiliated with, connected to, or sponsored by us.
is wise to clean spills promptly, following the normal guidelines used in
dealing with chemical spills. Many stains can be removed from the stirring
platform with soap and water. Never immerse the unit or flood it with water or
other liquids.
lWhen using the Vernier Microstirrer, it is best to position the Microstirrer
slightly off center of the beaker. Rotate the Microstirrer to find the smoothest
and quietest operating position.
lThe stirring controls are sufficiently steady on the Stir Station that you can set
the stirring at a desired speed and it will not change appreciably over several
hours.
How the Sensor Works
The Stir Station uses a tachometer feedback control system, thus making it easier
to fine-tune and maintain its stirring speed. This method of speed control also
allows you to remove a beaker while it is stirring without affecting the Stir
Station’s motor speed.
Three LEDs are positioned beneath the translucent stirring platform and offer
efficient lighting for a wide range of beaker sizes. The LEDs do not heat the
stirring platform and have a long life span so they will most likely never need
replacing.
The Stir Station motor is sufficiently powerful to operate most common-size
magnetic stirring bars. It will stir solutions of a viscosity nearing the
1000-centipoise range (roughly half the viscosity of grocery store corn syrup).
You may also use a Vernier Microstirrer (included) with the Stir Station.
Troubleshooting
For troubleshooting and FAQs, see www.vernier.com/til/1387
Repair Information
If you have watched the related product video(s), followed the troubleshooting
steps, and are still having trouble with your Stir Station, contact Vernier Technical
Support at [email protected] or call 888-837-6437. Support specialists will
work with you to determine if the unit needs to be sent in for repair. At that time,
a Return Merchandise Authorization (RMA) number will be issued and
instructions will be communicated on how to return the unit for repair.
Accessories/Replacements
Item Order Code
Microstirrer MSTIR
Vernier AC Adaptor IPS
Warranty
Warranty information for this product can be found on the Support tab at
www.vernier.com/stir
General warranty information can be found at www.vernier.com/warranty

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