PASCO PS-3201 Reference Manual

Calibration is not always necessary, especially if you are measuring a change in temperature rather than absolute temperature values. However, it is possible to calibrate the sensor. For detailed information, see Appendix B. Battery Usage The Wireless Temperature Sensor includes a 3 V coin cell battery (CR2032). Battery life is very important to making the sensor simple and always ready to use, so all of the PASCO wireless products are designed for long battery life. For example, the sensor turns itself off after a short time of inactivity. We expect more than one year of battery life, but the actual amount depends on factors such as the data collection sampling rate. Sensor Storage If the sensor will be stored for many months, we recommend that you remove the battery to avoid damaging the sensor in case of a battery leak. Battery Removal and Replacement If the sensor’s battery status LED blinks red, the battery may need to be replaced. Replacing the small, disk-shaped battery involves removing the Battery Compartment Door on the bottom of the sensor, removing the old battery, installing a new battery of the same type, and replacing the Battery Compartment Door. The procedure needs a coin and a CR2032 three volt battery. (NOTE: This battery is commonly available in electronic and commercial stores.) Remove the Battery Compartment Door Hold the sensor bottom-side up. Use a coin in the slot to turn the Battery Compartment Door counterclockwise (left-to-right) until the indicator on the door is aligned with the second mark on the sensor. Turn the sensor bottom-side down so that the Battery Compartment Door can drop into the palm of your hand. Make sure that the battery door gasket stays on the door. The gasket is an “O-ring” that is held in place by the tabs on the door. Please do not touch the inside of the battery compartment Remove the used battery from the Battery Compartment Door and replace it with a new identical type battery. Note that the battery is held in place by the small tabs on the door. The side of the battery with the “+” on it should be against the door. Replace the Battery Compartment Door Put the Battery Compartment Door with the new battery back onto the sensor. Align the indicator on the door with the second mark, and use the coin in the slot to turn the door clockwise (right-to-left) until the indicator is aligned with the first mark on the sensor. (See “Battery Disposal Instructions” under Technical Support.) Related Item • Coin-cell Battery Replacement Pack (10 pack) - PS-3504 Troubleshooting the Wireless Temperature Sensor • If the sensor loses Bluetooth connection and will not reconnect, try cycling the ON button. Press and briefly hold the button until the status LEDs blink, and then release the button • If the sensor stops communicating with the computer software or tablet application, try restarting the software or application. If the problem remains, press and hold the ON button for ten seconds and then release the button. Turn on the sensor in the usual way. • Turn Bluetooth off and then turn it back on. Retry. Second mark Coin slot Battery Compartment Door Gasket (“O”-ring) Battery (CR2032) Tab PLEASE Do Not Touch First mark

PS-3201 4 013-14647C Temperature Probe Maintenance Rinse and dry the temperature probe before putting the sensor away for storage. The probe is stainless steel and the diameter (5 mm or 0.197”) is compatible with standard stoppers. Suggested Experiments Practically any experiment that uses a temperature measurement can be done with the PS-3201 Wireless Temperature Sensor. See the PASCO Web site at www.pasco.com/products/lab-manuals for more information about experiments Sensor Specifications *NOTE: Prolonged exposure of the sensor housing to temperatures at the extreme ends of the range will adversely affect battery life and performance. Technical Support For assistance with any PASCO product, contact PASCO at: The Reference Guide will be updated periodically. For the latest revision of this Reference Guide, visit the PASCO Web site at www.pasco.com/manuals and enter the product number, PS-3201, in the text window. Limited Warranty For a description of the product warranty, see the PASCO catalog. For more information visit www.pasco.com/legal. Copyright This PASCO scientific document is copyrighted with all rights reserved. Permission is granted to non-profit educational institutions for reproduction of any part of this manual, providing the reproductions are used only in their laboratories and classrooms, and are not sold for profit. Reproduction under any other circumstances, without the written consent of PASCO scientific, is prohibited. Trademarks PASCO, PASCO scientific, PASCO Capstone, PASPORT, and SPARKvue are trademarks or registered trademarks of PASCO scientific, in the United States and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks of, and are used to identify, products or services of their respective owners. For more information visit www.pasco.com/legal. FCC Statement This Class A digital device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CE Statement This device has been tested and found to comply with the essential requirements and other relevant provisions of the applicable EU Directives. Product End of Life Disposal Instructions: This electronic product is subject to disposal and recycling regulations that vary by country and region. It is your responsibility to recycle your electronic equipment per your local environmental laws and regulations to ensure that it will be recycled in a manner that protects human health and the environment. To find out where you can drop off your waste equipment for recycling, please contact your local waste recycle/disposal service, or the place where you purchased the product. The European Union WEEE (Waste Electronic and Electrical Equipment) symbol (to the right) and on the product or its packaging indicates that this product must not be disposed of in a standard waste container. Battery Disposal Instructions: Batteries contain chemicals that, if released, may affect the environment and human health. Batteries should be collected separately for recycling, and recycled at a local hazardous material disposal location adhering to your country and local government regulations. To find out where you can drop off your waste battery for recycling, please contact your local waste disposal service, or the product representative. The battery used in this product is marked with the International symbols to indicate the need for the separate collection and recycling of batteries. Wireless Temperature Sensor Range -40°C to +125°C (for the probe) -15°C to +50°C (for the housing)* Accuracy ±0.5° C Resolution 0.01°C Sample Rate Up to 10 Hz Address: PASCO scientific 10101 Foothills Blvd. Roseville, CA 95747-7100 Phone: +1 916 462 8384 (worldwide) 800-772-8700 (U.S.) Web: www.pasco.com/support Email: [email protected]

www.pasco.com/compatibility for the latest information on Bluetooth SMART compatibility. *The PS-3500 USB Bluetooth 4.0 Adapter, when connected to a USB port, allows up to three Bluetooth SMART devices, such as this PASCO wireless device, to connect to Windows computers, Chromebooks, and older Macintosh computers. Note: The PS-3500 USB Bluetooth 4,0 Adapter is the only adapter we can currently recommend. Many other Bluetooth 4.0 adapters are available but this adapter has a specific design that enables in-app pairing of Bluetooth SMART sensors. 1To check the Mac computer’s Bluetooth compatibility, do the following: • Click the  (Apple) Menu. • Select About This Mac • Click the More Info... button. • Click the System Report... button. • Select Bluetooth from the sidebar on the left, underneath Hardware. • Scan down the list of information until you find “LMP Version”. • If your Mac is equipped with Bluetooth SMART, the LMP Version will show 0x6. (Anything lower than 0x6 means an older version of Bluetooth. Your device will need the PS-3500 USB Bluetooth 4.0 Adapter.) 1The Mac Mini and MacBook Air were updated with Bluetooth SMART support in 2011. The MacBook Pro was updated in 2012. The Mac Pro that debuted in December 2013 has Bluetooth SMART support. Exception: Before you upgrade to El Capitan (Mac OS X 10.11.x), if you have a Macintosh with LMP version “0x4” that requires the PS-3500 USB Bluetooth 4.0 Adapter, please contact PASCO Technical Support for further instructions. What is Bluetooth SMART®? Bluetooth SMART (also known as Bluetooth Low Energy or Version 4.0 of the Bluetooth specification) is the latest protocol of the proprietary open wireless technology standard created by telecoms vendor Ericsson in 1994. It is the power- and application-friendly version of Bluetooth that was built for the Internet of Things (IoT). Platform Bluetooth SMART Compatibility iOS iPad 3 and later iPhone 4S and later iPod touch 5 and later SPARK Element All models Android Android 4.3 and later Chromebook Chrome OS (requires PS-3500 Adapter*) Mac OS X1 Models introduced July 2011 or later Windows Windows 7 and later (requires PS-3500 Adapter*) PS-3500 USB Bluetooth 4.0 Adapter

PS-3201 6 013-14647C Appendix B: Calibration Calibration is not always necessary, especially if you are measuring a change in temperature rather than absolute temperature values. However, it is possible to calibrate the sensor. Prepare for Calibration Calibration will need an ice-water bath, a container of hot water, and a thermometer. The sensor will need to be “paired” with a tablet or computer, and the data collection software (for example, SPARKvue or Capstone) should be running. Using SPARKvue Software for Calibration NOTE: Check the Help System in SPARKvue for the most up-to-date information. 1. Place the thermometer in the container of hot water. 2. Click (or press) the Experiment Tools button ( ). • The Experiment Tools screen opens. 3. Click Calibrate Sensor. • The Calibrate Sensor: Select Measurement screen opens. 4. Click the Sensor box and click the sensor to be calibrated. 5. Click the Calibration Type box and click a calibration type. (For this example, click “2-point”.) 6. Click Next. • The Calibrate Sensor Enter Values screen opens. 7. Place the temperature probe in the container of hot water. 8. Read the temperature on the thermometer. Under Calibration Point 1, click the Standard Value box and enter the known temperature value. 9. Under Calibration Point 1, click Read From Sensor. • The value measured by the sensor is transferred to the Sensor Value box. 10. Move the thermometer to the ice-water bath. Dry the temperature probe and then put the probe into the ice-water bath with the thermometer. 11. Wait until the reading on the thermometer stabilizes. Under Calibration Point 2, click the Standard Value box and enter the thermometer’s temperature value. 12. Under Calibration Point 2, click the Read From Sensor box. • The second value measured by the sensor is transferred to the Sensor Value box. 13. Click OK. Using PASCO Capstone for Calibration NOTE: Check the Help System in PASCO Capstone for the most up-to-date information. 1. Place the thermometer in the container of hot water. 2. Click Calibration ( ) in the Tools Palette. 3. Choose the measurement you would like to calibrate now: Temperature Measurement. 4. Click Next. 5. Choose the type of calibration you would like to perform: Two Standards (2 point). 6. Click Next. 7. Read the temperature on the thermometer and enter the value in the Standard Value text box. 8. Place the Temperature Probe in the container of hot water. 9. After the Current Value stabilizes, lick Set Current Value to Standard Value. 10. Click Next. 11. Move the thermometer to the ice-water bath. Dry the end of the temperature probe. Place the probe in the ice-water bath with the thermometer, 12. Wait until the reading on the thermometer stabilizes. Enter the second known temperature value in the Standard Value text box. 13. After the Current Value stabilizes, click Set Current Value to Standard Value. 14. Click Next. 15. Click Finish.

One of the functions of the PASCO Data Collection Software is to take the stream of raw data from a sensor and transform it into the calibrated data that you see in the Graph, Table, and other displays. If you do not calibrate a sensor yourself, the software uses a default calibration that is loaded when the sensor is connected. You can think of the software as taking in raw data and outputing calibrated data. When you perform a calibration, the software redefines the linear equation that transforms the raw input data into the calibrated output data. The linear function is of the form: Raw Input = Slope x Calibrated Output + Offset Or: Calibrated Output = (Raw Input - Offset)/Slope The function can be represented graphically as a line. Two points, Pt 1 and Pt 2, define the line. In the two-point calibration procedure, each point is reset by associating a known standard value (for instance, the temperature of ice water) with a raw input measurement that the sensor sends out when it is in that standard. In a one-point calibration, only one of the points is reset by the user. Types of Calibration There are three types of calibration: two-point, one-point slope, and one-point offset. Any of these calibrations can be performed on a single sensor, or simultaneously on multiple similar sensors; however, for any given sensor, the software will automatically select the most typical calibration type as the default setting. Two-Point In a two-point calibration, you reset two points to define a new line. This type of calibration affects both the slope and the offset. One-Point Slope In a one-point slope calibration, you reset only one point. The slope of the line changes so that the line intersects the new point, while the offset (or Y-intercept) does not change. One-Point Offset In a one-point offset calibration, you reset only one point. The line shifts so that it intersects the new point, but its slope does not change. Offset calibration is usually used to make one sensor agree with another sensor. Due to normal variation among probes, a second probe might read consistently higher than the first probe. Normally this difference would be insignificant; however, an offset calibration can be used to bring the sensors into closer alignment.