PASCO CI-6583 User Manual
Instruction Manual
Sensor Phonon
Plugs
Rod clamp
O-ring for
Three-step
Pulley
Three-step
pulley
Hex Key
(Allen wrench)
Thumbscrew
T-Slot
Additional
mounting
position for
rod clamp
(1 of 2)
Yellow Plug
Black Plug
Rotary Motion Sensor
CI-6538
012-13990A
Equipment Included Equipment Included
Rotary Motion Sensor (CI-6538) Three-step Pulley and O-ring
Rod Clamp Hex Key (Allen wrench)
Required Items* Information
PASCO Interface see www.pasco.com
PASCO Data Acquisition Software see www.pasco.com
Items to Consider* Information
*See the PASCO catalog or the PASCO web site at www.pasco.com for more information.
Experiments for the Rotary Motion Sensor in electronic format are available to download
from the PASCO web site at www.pasco.com. For downloadable experiments, go to
www.pasco.com and enter CI-6538 in the Search window. Check the User Resources tab.
PASPORT Digital Adapter PS-2159
Phone Jack Extender Cable (2) PI-8117
®
Model No.CI-6538 Quick Start
Sensor Pho-
non Plugs
DIGITAL
INPUT ports
Black Plug
Yellow Plug
• SETUP: For more information on setting up the software and recording data, refer to the
Online Help System and the User’s Guide for the data acquisition software.
Equipment used with the sensor Equipment used with the sensor
Mini-Rotational Accessory (CI-6691) Physical Pendulum Set (ME-9833)
Linear Motion Accessory (CI-6888) Torsion Pendulum Accessory (ME-6894)
Chaos/Driven Harmonic Accessory (CI-6689A) Track String Adapter (ME-6569)
“A” Base Rotational Adapter (CI-6690 Centripetal Force Pendulum (ME-9821)
Gyroscope Mounting Bracket (ME-8963) Linear Translator (OS-8535)
Dynamics Track Mount Accessory (CI-6692) Polarization Analyzer (OS-8533A)
Three-Step Pulley Accessory (CI-6693) Computer-Based Thermal Expansion (TD-8579)
Rotating Platform (ME-8951) Three-Axis Gyroscope (ME-8960)
Quick Start
• Plug the Sensor Phone Plugs into two adjacent DIGITAL
INPUT ports of a PASCO interface (such as the 850 Universal Interface). For example, plug the yellow plug into DIGITAL INPUT 1 and the black plug into DIGITAL INPUT 2.
• NOTE: If you are using a PASPORT-only PASCO interface,
connect the Sensor Phone Plugs to the PS-2159 PASPORT
Digital Adapter and then plug the adapter into the interface.
• Start the PASCO data acquisition software (such as PASCO
Capstone). Set up a data display in the software.
• Click “Record” or touch ‘Start’ to begin recording data. Turn the shaft of the Rotary Motion Sensor.
Introduction
The ScienceWorkshop CI-6538 Rotary Motion Sensor is a versatile position and motion measuring device. It
measures angles to a resolution of 0.09°, and detects the direction of motion. Markings on the outside of the case
indicate which is the default positive direction. The optical code wheel inside the sensor has 4000 divisions per
revolution (360°), and the maximum speed is 30 revolutions per second.
The sensor comes with a removable three-step pulley (10 millimeter (mm), 29 mm, and 48 mm diameters), and a
rubber “O”-ring that fits into the largest diameter step. The three-step pulley can be attached to either end of the
shaft, and can be placed large-diameter down or large-diameter up on the shaft. A tab on the inside of the pulley
matches a notch on the outside of the shaft. The pulley has a notch and a small hole in the outer edge of the largest and second largest steps for attaching a string. The thumbscrew hex key tool can be used to remove the rod
clamp from the end of the sensor so it can be mounted on either the right-hand or left-hand side.
The end of the sensor where the cord exits the case has a platform for mounting a Super Pulley with Table Clamp
(not included). The T-slot through the sensor is for inserting the optional Linear Motion Accessory rack
(CI-6888). The gear teeth on the rack mesh with the gear teeth on the optical code wheel inside the sensor.
012-13990A
2
®
Model No.CI-6538 Introduction
Rod clamp
Case
Rod clamp
mounting
positions
Dynamics
Track Mount
Accessory
PAS CO t r ac k
Support rod
Dynamics
Track Mount
Accessory
Square
nut into
T-slot
Mounting rod
Hanging
mass
PASCO
Cart
PASCO
Track
Mounting the Rotary Motion Sensor
The rod clamp fits rods up to 12.7 mm in diameter, such as the
ME-8736 45 cm Stainless Steel Rod, and the rod clamp can be
attached to the sensor in three different locations: at the end opposite to the cable and on either side of the case.
Use the included hex key to loosen the two screws that hold the
rod clamp on the Rotary Motion Sensor case. The two screws do
not need to come out all the way; they are held inside the rod
clamp by small O-rings. Move the rod clamp to one of the additional mounting positions on either side of the case and use the
hex key to tighten the screws in place.
It is possible to mount the Rotary Motion Sensor horizontally on
a support rod with the Three-step Pulley facing up or facing sideways. You can mount the sensor vertically with the pulley facing
forward. The sensor can also be mounted on the short rod that is part of the Dynamics Track Mount Accessory
(CI-6692).
Mounting the Rotary Motion Sensor on a PASCO Track
Use the Dynamics Track Mount Accessory (CI-6692) to mount the
Rotary Motion Sensor on a PASCO track. Slide the square nut of the
Dynamics Track Mount Accessory into the T-slot on the side of the
track. Adjust the position of the mounting rod.on the Dynamics Track
Mount Accessory.
012-13990A
When mounted on a track as shown, a
Rotary Motion Sensor could be used to
measure the motion of a PASCO Cart as it
is pulled by a string suspended over the
Three-step Pulley of the sensor and
attached to a hanging mass.
3
®
Rotary Motion Sensor Introduction
Adapter
Bracket
Rotary
Motion
Sensor
3-step
Pulley
3-step
Pulley
Shoulder
Screw
Rotating
Shaft
Rotary
Motion
Sensor
Adapter
Bracket
Top View Bottom View
“O” Ring
3-step
Pulley
Gyroscope
Mounting
Bracket
Slotted
guide
arm
Mini-Rotational
Accessory Rod
Rod
guides
Cylindrical
mass
Shaft
Screw
Mounting the Rotary Motion Sensor to a Large “A” Base
The Rotary Motion Sensor can be mounted on the base of the Rotating
Platform (ME-8951) using the “A” Base Rotational Adapter (CI-6690,
available separately).
The “A” Base Rotational Adapter includes an adapter bracket, a
three-step pulley, a drive belt (“O” ring), and a shoulder screw.
See the PASCO web site at www.pasco.com for more information.
Mounting the Rotary Motion Sensor to a Gyroscope
Use the Gyroscope Mounting Bracket (ME-8963, available separately)
to mount the Rotary Motion Sensor to the Three-Axis Gyroscope
(ME-8960). Remove the gyroscope assembly from the vertical shaft of
the large “A” base. Mount the Gyroscope Mounting Bracket onto the
vertical shaft. Remove the rod clamp and the three-step pulley from the
Rotary Motion Sensor, and mount the sensor on the Gyroscope Mounting Bracket with the thumbscrews included with the bracket. Mount
the slotted guide arm onto the shaft of the Rotary Motion Sensor.
Replace the gyroscope assembly on the vertical shaft.
See the PASCO web site at www.pasco.com for more information.
Attaching Accessories to the Rotary Motion Sensor
Attaching the Mini-Rotational Accessory to the Rotary Motion Sensor
To mount the rod of the Mini-Rotational Accessory to the Rotary Motion
Sensor, orient the 3-step Pulley so that the large diameter step is away
from the sensor case. The large diameter step has two pair of rod guides
opposite each other on the top edge. Align the rod with the rod guides
and use the captive screw in the center of the rod to attach the rod and
pulley onto the sensor’s shaft.
Attach the center of the rod to the 3-step Pulley and shaft and mount the
cylindrical masses at the ends of the rod to investigate the rotational inertia (moment of inertia) of point masses.
Attach the end of the rod to the 3-step Pulley and shaft. Mount a cylindrical mass on the rod to use the rod as a pendulum. Investigate the period
of oscillation of the pendulum when the amount of mass or the position
of the mass is changed. Investigate the period of oscillation as the amplitude of the swing is changed.
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