Pasco PS-2177 Light Level Sensor Uživatelský manuál stáhnout pdf

Instruction Sheet

012-11060A

Light Level Sensor

PS-2177

*012-11060*

*See the PASCO catalog or web site at www.pasco.com for compatible PASPORT interfaces and Data Acquisition Software..

Introduction

Photometry deals with the measurement of visible light as perceived by human eyes. The PASPORT Light Level

Sensor measures illuminance in lux. The readings of the sensor mimic the wavelength sensitivity of the human

eye, which is most sensitive in the green part of the spectrum (peaking at about 555 nanometers). This is

achieved with a green filter in the sensor.

In photometry, illuminance is the luminous flux incident on a surface, per unit area. In other words, it is the mea-

sure of the intensity of the incident light, wavelength-weighted to correlate with human brightness perception.

Illuminance is measured in lux, or lumens per square meter. Luminous flux, measured in lumens, is the perceived

power (energy per unit of time) of light. One lumen is defined as the luminous flux of light produced by a light

source that emits one candela of luminous intensity over a solid angle of one steradian. Luminous intensity, mea-

sured in candela, is the wavelength-weighted power emitted in a particular direction per unit solid angle. If a

light source emits one candela, a metric (SI) base unit, it emits monochromatic green light with a frequency of

540 terahertz (THz) that has a radiant energy of 1/683 watts per steradian in a given direction. A one-hundred

watt incandescent light bulb emits about 120 candela. A uniform one candela source emits 12.6 lumens.

Included Equipment Part Number

Light Level Sensor PS-2177

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Strany 1 - Light Level Sensor

®Instruction Sheet012-11060ALight Level SensorPS-2177*012-11060*\*See the PASCO catalog or web site at www.pasco.com for compatible PASPORT interfaces

Strany 2 - About the Sensor

®Model No.PS-2177 Introduction2About the SensorThe PS-2177 Light Level Sensor uses a silicon photodiode that produces a voltage that is proportional

Strany 3 - SPARK Setup

®Model No.PS-2177 Setup3SetupHardware Setup• Connect the Light Level Sensor to a PASPORT interface.If you will be using a computer, connect the PASPO

Strany 4 - Technical Support

®Light Level Sensor Setup4Select a DisplayTo set up a particular display (e.g., digits display), touch BUILD. Touch a quantity from the list, and then

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Pasco PS-2177 Light Level Sensor Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Zařízení Pasco PS-2177 Light Level Sensor. PASCO PS-2177 Light Level Sensor User Manual Uživatelská příručka

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