Vernier Light Sensor Manual

Vernier Bevægelsesdetektor Light Sensor

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Side 1/2

Light Sensor

(Order Code LS-BTA)

The Light Sensor can be used for measurements of light intensity in a variety of

situations.

 Perform inverse square light intensity experiments using a point source of light.

 Conduct polarized filter studies.

 Demonstrate the flicker of fluorescent lamps and other lamps.

 Carry out solar energy studies.

 Perform reflectivity studies.

 Study light intensity in various parts of a house or school.

 Use it as part of a study of plant growth to measure light intensity.

Collecting Data with the Light Sensor

This sensor can be used with the following interfaces to collect data:

 Vernier LabQuest® 2 or the original LabQuest as a standalone device or with a

computer

 Vernier LabQuest® Mini with a computer

 Vernier LabPro® with a computer or TI graphing calculator

 Vernier Go!®Link

 Vernier EasyLink®

 Vernier SensorDAQ®

 CBL 2TM

 TI-Nspire™ Lab Cradle

Here is the general procedure to follow when using the Light Sensor:

1. Connect the Light Sensor to the interface.

2. Start the data-collection software.

3. The software will identify the Light Sensor and load a default data-collection

setup. You are now ready to collect data.

Data-Collection Software

This sensor can be used with an interface and the following data-collection software.

 Logger Pro 3 This computer program is used with LabQuest 2, LabQuest,

LabQuest Mini, LabPro, or Go!Link.

 Logger Pro 2 This computer program is used with ULI or Serial Box Interface.

 Logger Lite This computer program is used with LabQuest 2, LabQuest,

LabQuest Mini, LabPro, or Go!Link.

1 If you are using Logger Pro 2 with either a ULI or SBI, the sensor will not auto-ID. Open an

experiment file for the Light Sensor in the Probes & Sensors folder.

 LabQuest App This program is used when LabQuest 2 or LabQuest is used as a

standalone device.

 EasyData App This calculator application for the TI-83 Plus and TI-84 Plus can

be used with CBL 2, LabPro, and Vernier EasyLink. We recommend version 2.0

or newer, which can be downloaded from the Vernier web site,

www.vernier.com/easy/easydata.html, and then transferred to the calculator. See

the Vernier web site, www.vernier.com/calc/software/index.html for more

information on the App and Program Transfer Guidebook.

 DataMate program Use DataMate with LabPro or CBL 2 and TI-73, TI-83,

TI-84, TI-86, TI-89, and Voyage 200 calculators. See the LabPro and CBL 2

Guidebooks for instructions on transferring DataMate to the calculator.

 DataQuest™ Software for TI-Nspire™ This calculator application for the

TI-Nspire can be used with the EasyLink or TI-Nspire Lab Cradle.

 LabVIEW National Instruments LabVIEW™ software is a graphical

programming language sold by National Instruments. It is used with SensorDAQ

and can be used with a number of other Vernier interfaces. See

www.vernier.com/labview for more information.

NOTE: Vernier products are designed for educational use. Our products are not

designed nor 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.

Specifications

Resolution:

13-bit (with SensorDAQ)

0–600 lux: 0.1 lux

0–6000 lux: 1 lux

0–150000 lux: 25 lux

12-bit (with LabQuest 2, LabQuest, LabQuest Mini, LabPro, Go! Link, EasyLink,

TI-Nspire Lab Cradle, ULI, or Serial Box Interface)

0–600 lux: 0.2 lux

0–6000 lux: 2 lux

0–150000 lux: 50 lux

10-bit (with CBL 2)

0–600 lux: 0.8 lux

0–6000 lux: 8 lux

0–150000 lux: 200 lux

Stored calibration values

0–600 lux slope: 154 lux/V

intercept: 0 lux

0–6000 lux slope: 1692 lux/V

intercept: 0 lux

0–150000 lux slope: 38424 lux/V

intercept: 0 lux

This sensor is equipped with circuitry that supports auto-ID. When used with

LabQuest 2, LabQuest, LabQuest Mini, LabPro, Go! Link, SensorDAQ, TI-Nspire

Lab Cradle, EasyLink, or CBL 2, the data-collection software identifies the sensor

and uses pre-defined parameters to configure an experiment appropriate to the

recognized sensor.

How the Light Sensor Works

The sensor uses a Hamamatsu S1133 silicon

photodiode. It produces a voltage which is

proportional to light intensity. The spectral response

approximates the response of the human eye as

shown in this diagram. The switch on the box is used

to select the range. If the reading from the sensor

reaches the maximum for the selected ranges, you

need to switch to a less sensitive range. If the reading

is very small or 0, you need to select a more sensitive

range.

 The 0–600 lux range is the most sensitive range. It is useful for low levels of

illumination.

 The 0–6000 lux range is a good general purpose range for indoor light levels.

 The 0–150,000 lux range is used mainly for measurements in sunlight.

Calibration

You should not have to perform a new calibration when using the Light Sensor in

the classroom. We have set the sensor to match our stored calibration before

shipping it. You can simply use the appropriate calibration file that is stored in your

data-collection program from Vernier.

In most cases, you can simply load an experiment file that is designed for use with the

Light Sensor and calibration is taken care of. Different calibration files are provided

for each of the three switch settings. Be sure to load the file that matches the switch

setting you are using.

In other cases, you can use this sensor without calibration, reading just voltage. Note

that for this sensor, voltage is always proportional to light intensity. If you want to

calibrate the Light Sensor yourself, you can do so. Using a calibrated light meter and

is similar to the procedure used to calibrate any other Vernier probe. Make sure the

switch on the Light Sensor box is set to the correct range. If you want to calibrate

more than one range, you will need to repeat the following procedure and treat each

range as a separate probe.

Calibration Using Another Light Meter

This calibration method is easy if you have a calibrated light meter. You simply do a

standard two-point calibration as described in the data collection program manual

using two different light levels, both measured with your calibrated, hand-held light

meter. The input should be named “Illuminance” and the units should be “lux”. Save

the experiment file on disk. Use a name for the calibration file that indicates the

setting of the range switch, such as: LS600 or LS6000. You will need to have the

switch set to the correct range whenever you reload your experiment file.

WAVELENGTH (nm)

200 300 400 500 600 700 800 900 1000

0.0

0.2

0.3

0.4

0.5

0.6

0.7

0.1

RADIANT SENSITIVITY (A/W)

PHOTODIODE

HUMAN EYE

Spectral Response of the

Hamamatsu S1133 Photodiode

Warranty

Vernier warrants this product to be free from defects in materials and workmanship

for a period of five years from the date of shipment to the customer. This warranty

does not cover damage to the product caused by abuse or improper use.

Vernier Software & Technology

13979 S.W. Millikan Way  Beaverton, OR 97005-2886

Toll Free (888) 837-6437  (503) 277-2299  FAX (503) 277-2440

info@vernier.com  www.vernier.com

Rev 5/3/2012

Logger Pro, Logger Lite, Vernier LabQuest 2, Vernier LabQuest, Vernier LabQuest Mini, Vernier LabPro, Go! Link,

Vernier EasyLink and other marks shown are our trademarks or registered trademarks in the United States.

TI-Nspire, CBL 2 and CBL, TI-GRAPH LINK, and TI Connect are trademarks 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.

Printed on recycled paper.

Produkt Specifikationer

Mærke:	Vernier
Kategori:	Bevægelsesdetektor
Model:	Light Sensor

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