Instructions

ManualsBrandsVERNIER ManualsTest & Measurement AccessoriesSensor CRG-BTA ,

Charge Sensor

(Order Code CRG-BTA)

The Charge Sensor is used as an electronic

electroscope. Unlike a traditional electroscope,

the Charge Sensor can make quantitative measurements. Numerical measurements

improve many electrostatics experiments, such as charging by induction, charging by

friction and charging by contact. The sensor can also be used to measure charge

polarity.

An extremely high impedance voltage sensor with a 0.01µF input capacitor makes

these measurements possible. The sensor has three operating ranges and a zeroing

switch to discharge the input capacitor.

Collecting Data with the Charge Sensor

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

 Vernier LabQuest

2 or original LabQuest

as a standalone device or with a

computer

 Vernier LabPro

with a computer or TI graphing calculator

 Vernier LabQuest Mini with a computer

 Vernier Go!

Link

 Vernier EasyLink

 Vernier SensorDAQ

 CBL 2™

 TI-Nspire™ Lab Cradle

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

LabQuest Mini, LabPro, or Go!Link.

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

standalone device.

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

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

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

be used with CBL 2™, LabPro, Vernier EasyLink, CBR 2, and CBR. 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.

 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.

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

1. Connect the Charge Sensor to the interface.

2. Start the data-collection software.

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

setup. You are now ready to collect data

Specifications

Ranges:



0.5 V (



5 nC)



2 V (



20 nC)

 10 V ( 100 nC)

Maximum inpu

:  150 V

Typical bias input curren

: 0.005 pA

Instrument time constan

:0.1 s

Stored Calibration Values

 0.5V setting in Volts slope: 0.22

intercept: –0.55

 0.5V setting in nC slope: 2.2

intercept: –5.5

 2 V setting in Volts slope: 1.0

intercept: –2.5

 2 V setting in nC slope: 10.0

intercept: –25.0

 10 V setting in Volts slope: 3.3

intercept: –8.25

 10 V setting in nC slope: 33.0

intercept: –82.5

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.

Summary of content (4 pages)

PAGE 1
Charge Sensor (Order Code CRG-BTA) The Charge Sensor is used as an electronic electroscope. Unlike a traditional electroscope, the Charge Sensor can make quantitative measurements. Numerical measurements improve many electrostatics experiments, such as charging by induction, charging by friction and charging by contact. The sensor can also be used to measure charge polarity. An extremely high impedance voltage sensor with a 0.01µF input capacitor makes these measurements possible.
PAGE 2
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. How the Charge Sensor Works The Vernier Charge Sensor is an extremely high impedance voltage sensor with a 0.01 μF capacitor in series with the input. The capacitor will accumulate charge until the source’s voltage is reached, i.e.
PAGE 3
 Charge various objects and determine the sign of the charge.  Measure how quickly objects lose charge. Plot the charge as a function of time; this will take some minutes on a dry day.  Use the Charge Sensor and Faraday pail to observe the separation of charge when two strips of invisible tape are pulled apart. On two 3 inch pieces of tape, make a tab by folding over the top of each. Stick the combination to the table top.
PAGE 4
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. 6/5/2012 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.