The PASPORT Rotary Motion Sensor measures angle, angular velocity, angular acceleration and linear position, velocity, and acceleration.
See the Buying Guide for this item's required, recommended, and additional accessories.
Product Summary
The PASPORT Rotary Motion Sensor is used to measure position, velocity, and acceleration, both angular and linear, with high resolution (4000 divisions/rev). The maximum spin rate is 30 rev/sec.
How it Works: The Rotary Motion Sensor detects the angle with an optical encoder which interrupts the light beam 4000 times per revolution of the Rotary Motion Sensor shaft. The 6.35 mm diameter, dual ball-bearing shaft extends from both sides of the unit so objects can be attached to either side. The rod clamp, which can be attached to three sides of the sensor, allows the unit to be mounted in almost any orientation. It has a three-step pulley to vary the applied torque. The PASCO Super Pulley with Clamp can be clamped to the platform on the Rotary Motion Sensor to apply a torque with a hanging mass.
Features
- Three-step pulley (10, 29, and 48 mm in diameter) is included.
- Rod clamp can be attached on three sides
- Built-in storage for the hex key for removing the rod clamp.
- Measures the direction of rotation
- Ball bearings minimize friction and provide mechanical support to rotating objects
Applications
- Verify conservation of angular momentum
- Calculate the rotational inertia of a disk, ring, and point mass
- Measure the displacement, velocity, and acceleration of a cart on a track
- Conduct quantitative analysis of simple harmonic motion
- Measure the acceleration of a cart caused by a mass hung over a pulley
- Accurately measure the angular acceleration of systems with constant torque
Product Specifications
| Resolution | Angular: 0.09° (0.00157 rad) ≡ Linear: 0.0078 mm |
| Maximum Rotation Rate | 30 revs/s |
| Sensor Dimensions | 10 cm x 5 cm x 3.75 cm |
| Three-step Pulley | 10 mm, 29 mm, and 48 mm diameters |
| Shaft Diameter | 6.35 mm |
| Optical Encoder | Bidirectional to indicate the direction of motion; 4000 divisions/rev |
Data Collection Software
This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »
Interface Required
This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »
Dedicated Datalogging with SPARK LXi2
Consider an all-in-one, touchscreen data collection, graphing, and analysis tool for students. Designed for use with wired and wireless sensors, the SPARK LXi2 Datalogger simultaneously accommodates up to five wireless sensors and includes two ports for blue PASPORT sensors. It features an interactive, icon-based user interface within a shock-absorbing case and arrives packaged with SPARKvue, MatchGraph!, and Spectrometry software for interactive data collection and analysis. It can additionally connect via Bluetooth to the following interfaces: AirLink, SPARKlink Air, and 550 Universal Interface.
Buying Guide
| Recommended Accessories | P/N | Price |
|---|---|---|
| Rotational Inertia Accessory | ME-3420 | -- |
| Induction Wand | EM-8099 | -- |
| Linear Motion Accessory | CI-6688A | -- |
| Pendulum Accessory | ME-8969 | -- |
| Chaos/Driven Harmonic Accessory | CI-6689A | -- |
| Dynamics Track Mount | CI-6692 | -- |
| Mini Ballistic Pendulum Accessory | ME-6829 | -- |
| Replacement Parts | P/N | Price |
|---|---|---|
| 3-Step Pulley for Rotary Motion Sensor | CI-6693 | -- |
| Rod Clamp for Rotary Motion Sensor | ME-8945 | -- |
| Also Available | P/N | Price |
|---|---|---|
| A-Base Rotational Adapter | CI-6690 | -- |
Product Guides & Articles
Rotary Motion Sensors
Rotary motion sensors, often referred to as rotary encoders or angular position sensors, are vital components in the realm of science and engineering, designed to measure and track the rotational movement of objects with precision. These sensors are employed to determine the angular displacement, speed, and direction of rotation of various mechanical components such as motors, shafts, and wheels.
Experiment Library
Perform the following experiments and more with the PASPORT Rotary Motion Sensor.
Visit PASCO's Experiment Library to view more activities.
Light Intensity vs. Distance
The relative light intensity versus distance from a point light source is plotted and compared to theory.
Earth's Magnetic Field
The magnitude and direction of the Earth's magnetic field are measured using a Magnetic Field Sensor mounted on a Rotary Motion Sensor.
Centripetal Force
The dependence of centripetal force on radius and angular velocity is investigated. A rigid pendulum hangs from a force sensor mounted directly onto the shaft of the Rotary Motion Sensor so both force and angular velocity are...
Rotational Kinetic Energy
This lab investigates the potential and kinetic energies for a modified Atwood's Machine, where a disk has been added to the Rotary Motion Sensor pulley.
Rotational Inertia
A known torque is applied to the three-step pulley on the Rotary Motion Sensor, causing a disk and ring to rotate. The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time. The...
Light Intensity versus Distance
The relative light intensity versus distance from a point light source is plotted. As the Light Sensor is moved by hand, the string attached to the Light Sensor that passes over the Rotary Motion Sensor pulley to a hanging mass...
Large Amplitude Pendulum
Explore the oscillatory motion of a physical pendulum for both small and large amplitudes and discover the dependence of the period of a pendulum on its amplitude. Waveforms are examined for angular displacement, velocity and...
Newton's Second Law for Rotation
A torque is applied to point masses on a rod mounted on a Rotary Motion Sensor and the resulting angular acceleration is measured and the rotational inertia of the object is calculated. The radius of rotation of the point masses...
Physical Pendulum
A rod and a disk oscillate as a physical pendulum. The periods are measured directly by the Rotary Motion Sensor, and the values are compared to the theoretical periods calculated from the dimensions of the pendula.
Conservation of Energy of a Simple Pendulum
The purpose of this experiment is to use measurements of the motion of a simple pendulum to calculate and compare the different types of energy present in the system.
Static Equilibrium of a Rigid Body
A rod mounted on a Rotary Motion Sensor is suspended in static equilibrium. The angles, lever arms, and forces are measured. The forces are summed and the torques are summed.
Statics
The components of tension from the two parts of the string are compared to the Force Sensor pulling at the center of the string in a system in static equilibrium. Students sum the force vectorally.
Support Documents
| Manuals | ||
|---|---|---|
| PASPORT Rotary Motion Sensor Manual | English - 588.17 KB | |
| Sensor de rotación | Spanish - 1.11 MB | |
| PASPORT Rotary Motion Sensor | Russian - 593.51 KB | |
| Other Documents | ||
| PASPORT Rotary Motion Sensor Experiment Guide | English - 941.19 KB | |
| Knowledge Base | ||
| Principle of Operation - Rotary Motion Sensor | Apr 14th, 2022 | |
