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PASCO PASPORT PS-2148 Instruction Manual

Ir sensor
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Shutter
Thumbscrew
& Washer
Included Equipment
IR Sensor
Shutter with thumbscrew and washer
Sensor Handle
Additional Equipment Required
PASPORT interface
DataStudio or DataStudio Lite
(required for computer-based data collection)
Additional Equipment Recommended
PASPORT Extension Cord
Aperture Bracket
Thermal Cavity
Introduction
The PASPORT IR Sensor measures infrared radiation intensity over a broad spectrum,
allowing students to study a variety of phenomena including blackbody radiation, the
Stefan-Boltzmann law, heat flow by radiation, solar radiance and non-contact temperature
measurement.
IR Sensor
PS-2148
IR Sensor
Instruction Manual
Sensor Handle
Part Number
PS-2148
003-08860
CI-9874 (4-pack)
See PASCO catalog or www.pasco.com
See PASCO catalog or www.pasco.com
DS Lite available for free download
PS-2500
OS-8534
TD-8580
No. 012-08852A

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Summary of Contents for PASCO PASPORT PS-2148

  • Page 1 Shutter with thumbscrew and washer 003-08860 Sensor Handle CI-9874 (4-pack) Additional Equipment Required PASPORT interface See PASCO catalog or www.pasco.com DataStudio or DataStudio Lite See PASCO catalog or www.pasco.com DS Lite available for free download (required for computer-based data collection) Additional Equipment Recommended...

  • Page 2: Sensor Setup

    IR Sensor Sensor Setup The sensor's silicon-based thermopile encapsulated in nitrogen with a thallium bromide-iodide (KRS-5) window has a flat spectral response from 0.7 to 30 µm. It measures radiation intensity up to 4500 W/m . An integrated thermistor measures the temperature of the detector allowing the user to calculate detector-emitted radiation.

  • Page 3: Theory Of Operation

    Model No. PS-2148 Background Theory of Operation Source Consider a blackbody of temperature T , whose shape can be approximated as an infinite plane, and a flat detector surface parallel to source with area A Because radiation from an infinite plane propagates as a plane wave, the power flow from the source to the detector (P ) equals the radiation emitted by a part of the source whose area is equal to the detector’s...

  • Page 4: Usage Notes

    IR Sensor Usage Notes Usage Notes Field of View 92° There are two simple arrangements 48° of source object and sensor. In the first, the source approximates an infinite plane. The radiation propagates from the source as a plane wave, and the intensity does Window not increase with increasing distance from the source.
  • Page 5 1. You will also need a temperature sensor to measure the temperature directly. The PASCO Fast-response Probe (PS-2135) works well because it responds quickly to small changes. Use the probe with a PS-23125 Temperature sensor or any other PASPORT sensor that supports external probes;...
  • Page 6 IR Sensor Usage Notes and the sensor is irrelevant. Place the end of the fast-response temperature probe in the cup close to the side that the IR sensor is viewing. Set up your computer or interface to calculate (T – T ), and to graph –...

  • Page 7: Suggested Activities

    Model No. PS-2148 Suggested Activities – T ) versus voltage Suggested Activities Solar Radiation Measure the radiation intensity from the sun. Compare it to the intensity from a different part of the sky. (When measuring the temperature of the sky, make sure that the sun and other objects such as trees and buildings are not in the field of view.) How does the presence of clouds, or the angle of the sun in the sky affect solar radiation intensity?

  • Page 8: Further Reading

    TD-8580 Thermal Cavity Radiated Power vs. Input Power of a Light Bulb *PASCO part EM-8627 is Measure the voltage and current applied to a small light bulb*, and the a pack of 25 light bulbs radiation intensity emitted by it. Calculate the input electrical power, that work well for this and the total radiated power.

  • Page 9: Specifications

    Model No. PS-2148 IR Sensor Specifications Technical Support 1.5 × 1.5 mm For assistance with any PASCO product, Active Area Size contact PASCO at: Element Area Address: PASCO scientific 2.25 mm 10101 Foothills Blvd. Number of Roseville, CA 95747-7100 Thermocouple...

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