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![REED C-322 Instruction manual | Manualzz REED C-322 Instruction manual | Manualzz](http://s3.manualzz.com/store/data/028457020_1-9dfb7417f221322621a099ef4de4f672-360x466.png)
Model C-322 Datalogging Sound Level Meter Instruction Manual Tripod sold separately (Model BS-6) www reedinstruments com Table of Contents Safety............................................................................................. 3 Features.......................................................................................... 4 Specifications..............................................................................5-6 Instrument Description..............................................................7-10 Operating Instructions.............................................................11-14 Getting Started......................................................................................11 Datalogger Clock & Interval Setup.................................................. 12-13 Calibration Procedures..........................................................................13 Operating Precautions...........................................................................14 Setup of TestLink RS232 Interface Software..........................14-18 Tutorial/Quick Start..................................................................18-20 Frequently Asked Questions........................................................ 20 For service on this or any other REED product or information on other REED products, contact REED Instruments at [email protected]. www reedinstruments com Safety Read the following safety information carefully before attempting to operate or service this instrument. Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired. Environment conditions • Altitude up to 2000 meters • Relatively humidity 90% max. • Operation Ambient 0 to 40°C Maintenance & Cleaning • Repairs or servicing not covered in this manual should only be performed by qualified personnel.* • Periodically wipe the case with a dry cloth. Do not use abrasives or solvents on this instrument. Safety symbol Complies with EMC standards *When servicing this meter, use only specified replacement parts. For service (repairs or calibration) on this or any other REED product or information on other REED products, contact REED Instruments at info@ reedinstruments.com. www reedinstruments com Features This datalogging sound level meter conforms to the IEC651 type2, ANSI S1.4 Type2 for sound level meters. It’s internal memory can keep up to 32,000 records. Every time you press “REC” button to start recording data and press “REC” button again to stop recording, there will be a data set in the memory, you can store as many data sets as you want until the memory is full. The C-322 uses RS232 interface to perform bi-directional communication with PC. • 32-80, 50-100, 80-130 dB level ranges • Auto-ranging from 30 to 130 dB • Dynamic range of 50 dB • 0.1 dB resolution • Frequency Range: 31.5 Hz to 8 kHz • Accuracy of ±1.5 dB (ref 94 dB @ 1 kHz) • 32,000 record data logger • 4-digit backlit display • Clock and bar graph displays • Auto power off • AC and DC output • Max/Min function • IEC651 Type II www reedinstruments com Specifications: Standards: IEC651 Type2, ANSI S1.4 Type2 Frequency Range: 31.5Hz to 8KHz Measuring Level Range: 30 ~ 130dB Frequency Weighting: A/C Microphone: 1/2” electret condenser microphone Display: LCD Digital Display: 4 digits Resolution: 0.1dB Display Update: 0.5 seconds Analog Display: 50 segment bargraph Resolution: 1dB Display Update: 50 mS Time Weighting: FAST (125mS), SLOW (1 sec.) Level Ranges: Lo : 30 – 80 dB Med: 50 – 100 dB Hi: 80 – 130 dB Auto: 30 to 130 dB Accuracy: ±1.5dB (under reference conditions @ 94dB, 1KHz) Dynamic range: 100 dB Alarm function: “OVER” is when input is more than the upper limit of range “UNDER” is when input is less than the lower limit of range MAX/MIN Hold: Holds the Maximum & Minimum value readings AC output: 1 Vrms at FS (full scale) Output impedance: Approx. 100Ω FS: means the upper limit of each level range continued ... www reedinstruments com DC output: 10mV/dB, output impedance approx. 1KΩ Power Supply: 1 x 9V battery, 006P or IEC 6F22 or NEDA 1604 Battery Life: About 50 hours with alkaline battery AC Adapter: Voltage 9 Vc.c. (8-10Vc.c. Max) Supply Current: > 30mAc.c. Ground Socket : pin Casing Positive 3.5mm External Diameter Internal Diameter 1.35mm Electromagnetic Compatibility: RF field = 3V/m Total accuracy = specified accuracy + 0.5dB Operation Temperature: 0 to 40°C ( 32 to 104°F) Operation Humidity: 10 to 90%RH Storage Temperature: -10 to 60°C (14 to 140°F) Storage Humidity: 10 to 75%RH Dimensions: 275 L ×64 W ×30mm H (10.8 ×2.5 ×1.2”) Weight: 285g (including battery) Includes: Battery, instruction manual, carrying case, calibration screwdriver, windscreen, RS232 cable, and Windows datalogging software Optional Accessory: Tripod (Model BS-6), Windscreen (Model SB-01), Sound Calibrator (Model SC-941), AC Adapter (Model CFD00230V-09V00) and USB Cable (Model JBUS300-1C000). www reedinstruments com Instrument Description 1- Windscreen When taking outdoor measurements in windy weather or when measuring air conditioning equipment, and such, the wind noise in the microphone can cause measurement errors. Simply use the windscreen to reduce the wind and therefore reduce it’s effects on your measurement. continued ... www reedinstruments com 2- Display Symbol Function LCD 4 digits MAX Maximum indication MIN Minimum indication Over range Under range FAST Fast response SLOW Slow response dBA A-Weighting dBC C-Weighting - Range indication Low battery Under range 20dB AUTO Auto level range selective REC Recording datalogger FULL Memory is full Auto Power OFF is active continued ... www reedinstruments com 3- Power & Backlight Button The power button turns the sound level meter ON and OFF, it also turns the backlight ON and OFF. Press it once to turn the sound level meter on. Press it again for moment to turn the backlight ON and OFF. Press and hold the power button for 3 seconds to turn the power OFF. Note: When the meter is turned on, the LCD will show how much memory is currently available. 4- MAX/MIN Hold Button MAX MIN Press the button to enter the maximum and minimum recording mode. Select the proper level range before using MAX/MIN mode to ensure that the reading value will not exceed the measurement range. Press the button once to select MAX value. Press it again to select MIN value, and press it once again to select current value with “MAX MIN” annunciator blinking. MAX MIN Press the button and hold it down for 2 seconds to exit the MAX/MIN mode. Note: If the sound level range or change A-C weight are changed, the MAX/MIN mode will be cleared. 5- Record Datalogger Button When the REC button is pressed, the meter will start recording. The “REC” annunciator is displayed. Press the button again to stop recording. 6- Frequency Weighting Select Button A:A-Weighting is for general sound level measurements C:C Weighting is for checking the low-frequency content of noise Note: If the C-Weighted level is much higher than the A-weighted level, then there is a large amount of low-frequency noise. continued ... www reedinstruments com 7- Time Weighting Select Button FAST is for normal measurements. SLOW is for checking the average level of fluctuating noise. 8- Level Range Control Button Each time the LEVEL button is pressed, the level range will change between “Lo” level, “Med” level, “Hi” level and “Auto” level. 9- Microphone 1/2” Electret condenser microphone. 10- CAL Potentiometer Calibration control for level calibration adjustments. 11- RS232 Interface: The RS232 signal output is a 9600 bps N 8 1 serial interface. 12- Signal Output Terminal AC: 1 Vrms corresponding to each range step. Output impedance = 100Ω Output signal by standard 3.5mm coaxial socket signal on pin. Note: At “Auto” level range, output signal is Auto select on “Lo” or “Med” or “Hi” level range. DC Signal AC Signal Ground DC: Output : 10mV/dB Output impedance = 1KΩ Output signal by standard 3.5mm coaxial socket signal on middle. 13- External DC 9V Power Supply Terminal For connection with AC adapter. 14- Tripod Mounting Screw A tripod for this sound level meter can be purchased separately (Model BS-6). 15- Battery Cover www reedinstruments com 10 Operating Instructions Getting Started Measurement Preparation 1)Battery Loading Remove the battery cover on the back and insert the 9V Battery. 2)Battery Replacement When the battery voltage drops below the operating voltage, this symbol will appear . Remove the old battery and replace with a new 9 Volt battery. Verify that the polarity is correct. 3)AC Adapter Connection When the AC adapter is used, insert the plugs of the adapter into the DC 9V connector on the side panel (see #12 on page 7). Taking Measurements After having loaded the battery: 1)Turn the power on and select the desired response Time and Weighting. If the sound source consists of short bursts or only catching sound peaks, set response to FAST. To measure the average sound level, use the SLOW setting. Select A-weighting for general noise sound level and C-weighting for measuring sound level of acoustic material. 2)Select desired level. Low (Lo), Medium (Med), High (Hi) & Automatic (Auto) 3)Hold the instrument comfortably in your hand or attach it to the tripod using the tripod mounting screw at the back of the meter (see #14 on page 7). Point the microphone at the noise source to be measured, the sound pressure level will be displayed. 4)When the MAX/MIN (maximum, minimum hold) mode is chosen, the meter captures and holds the maximum and minimum noise level for a long period using any of the time weightings and ranges. Press the MAX/MIN button 2 seconds to clear the MAX/MIN reading. The “MAX/MIN” symbol then disappears. 5)Turn the meter OFF and remove battery when not in use. continued ... www reedinstruments com 11 Datalogger Clock & Interval Setup Datalogger When the “REC” button is pressed, the meter will start recording. Pressing the “REC” button again will stop recording. If you want to clear the memory: 1) Turn off the meter 2) Press and hold “REC” button 3) Press power button and hold for at least 5 seconds The LCD will then show “CLR” and “SURE” to clear the memory. Clock Setup 1) Press and hold the “A/C” button 2) Turn on the meter 3) Press the “MAX/MIN” (clock) button 4) Press “REC” or “LEVEL” buttons to increase or decrease the number. Press the “MAX/ MIN” (clock) to adjust next item. The adjusting order is the year month day hour minute. Press the “MAX/MIN” (clock) button to finish the setup. If you want cancel the process during a setup, press power button. Recording Interval Setup 1) Press and hold “A/C” button and then turn the meter on 2) Press the “FAST/SLOW” (interval) button 3) Press the “REC” or “LEVEL” to increase or decrease number. Press the “FAST/SLOW” (interval) button to adjust next item. Press the “FAST/SLOW” (interval) to finish the setup. If you want cancel the process during a setup, press power button. continued ... www reedinstruments com 12 Auto Power Off By default, the meter is in auto power off mode. The meter will power itself off after 30 minutes without operation (button operation, RS232 communication and no recording operation). To disable the auto power off, press and hold the “FAST/SLOW” button and turn the meter on. The symbol will NOT appear. This indicates that the auto power off has been disabled. Calibration Procedures 1)Make the following switch settings: Display: dBA Time weighting: FAST Measurement mode: MAX MIN Mode function disabled. Level range: 50 to 100dB Using a standard Acoustic Calibrator (94dB, 1KHz Sine wave) Acoustic Calibrator 2)Insert the microphone housing carefully into the insertion hole of the calibrator. 3)Turn on the switch of calibrator and adjust the CAL potentiometer of the unit. The level display will indicate the desired level. Screwdriver This meter was calibrated before shipment. In order to ensure the accuracy of the sound level meter for a long period of time it should be calibrated once a year. For service (repairs or calibration) on this or any other REED product or information on other REED products, contact REED Instruments at [email protected]. continued ... www reedinstruments com 13 Operating Precautions 1)When taking outdoor measurements in windy weather or when measuring air conditioning equipment, and such, the wind noise in the microphone can cause measurement errors. Simply use the windscreen to reduce the wind and therefore reduce it’s effects on your measurement. 2)Calibrate the instrument before operation if the instrument was not in use for a long time or it was operated in a bad environment. 3)Do not store or operate the instrument at high temperatures and high humidity environments. 4)Keep the microphone dry and avoid severe vibration. 5)Remove the battery from the meter and store in low humidity environments when it is not in use. Setup TestLink RS232 Interface Software The TestLink package contains: CD software and a custom designed RS232 cable. System Requirements: Windows 98/ NT 4.0/ NT2000/ XP / VISTA. Minimum Hardware Requirements: PC or NoteBook with Pentium 90MHz or higher, 32 MB RAM. At least 5 MB hard drive space available to install TestLink. The recommended resolution is 800 x 600. Installing TestLink 1) Close all other applications before installing TestLink. 2) Insert setup CD into the CD drive. 3) Choose the Start button on the Taskbar and then select Run. 4) Type E:\SETUP and click OK, then it will copy SE322.exe (executable file) as well as the help file to your hard drive (default is c:\program files\TestLink\SE322). For other operation instruction details, refer to the online help while executing SE322. www reedinstruments com 14 Main Menu File/Open Retrieves files from the disk. Save Saves the active window (when the caption bar is highlighted) data to the hard drive. Print Prints the data of the active window (graph or list). Printer Setup Selects printer. File/Exit Terminates TestLink program. View/Control Panel By opening the Panel Window, the user can control meter via the button in this window. View/Real-Time Graph Opens Real-Time Graph display to a graph of the present data. Real Time Data/Run Starts collecting real time data. Stop Stops collecting real time data. DataLogger By opening the DataLogger Window, the user can load recorded data of meter to PC in this window. Output To Graph Graphing tabular data. The Underlines indicate the keyboard shortcuts to get to this actions. Simply use the Control key on your keyboard with the Underlined caracter. IE: The keyboard shortcut to Save is Control S. www reedinstruments com 15 Graph You can choose a rectangle area on the graph to zoom in for detail. There are two vertical lines (Cursor A and Cursor B) in the graph. Time and value are displayed on the top and right side of each cursor. You can move the mouse cursor over Cursor A or B and click to select and drag the mouse cursor to move these cursors left or right. Right below Cursor A and B is a slider. You can also click and drag slider to move Cursor A or B. At the top of this screen are the statistics/values for the Start Time, Sampling Rate, Data Number, Maximum and Minimum values of the graph. At the bottom of the screen are the statistics/values for the maximum and minimum average between Cursor A and B. This data will update automatically when Cursor A or B are moved. You can double click the graph to call up the option dialog. In the option dialog, you can customize your graph style. You can also right click the graph (real time graph is not allowed) to call up the popup menu. To Zoom into this graph using the mouse, Left click (click the left mouse button) and drag the cursor to select the new extents and release the mouse button. To Undo the Zoom, Right click on the graph, you will see a pop-up menu, select Undo Zoom. www reedinstruments com 16 Tool Bar Display or hide Statistic 1 Display or hide Statistic 2 Normal cursor When selected, the mouse cursor will become a cross sign when moving to the graph, click on the graph to mark a cross sign on the graph. When selected, the mouse cursor will become a “I” sign when moving to the graph, click on the graph to annotate. Color graph Monochrome graph DataLogger Once the meter is connected to the PC, either select “DataLogger” from the main menu or click on in the tool bar. This will load the data from the meter, the progress indicator will display the loading progress. If an error occus, simply click on “DataLogger” again. continued ... www reedinstruments com 17 After the data has been loaded, the left hand side of the computer screen will show how many data sets were loaded as well as the detail information for each data set: Start Date, Start Time, Recording Rate and Record Numbers. Here is an example: The data set will be transfered to the graph on the right hand side of the screen, each time after you load your recorded data from the meter. The waveform graph and statistics on the right hand side of the screen displays the information of the data set you have chosen. Therefore, you can click any data sets to the change the data set displayed in the graph. Tutorial - Quick Start to Use SE322 TestLink Recording real time data in waveform 1) First turn the meter on and connect it to a PC RS232 serial port using the cable (SE-300) provided. 2) Start SE322 program. 3) If the connection is successful the panel will display the same value as the Sound Level Meter. If the connection between the meter and the PC has failed, it will display “No Connection” in the panel window in TestLink SE322. 4) When the connection is successful, click to start recording real time data and there will be a waveform on the Real Time Graph Window. 5) Click to stop recording. www reedinstruments com 18 How to save the recorded real time data to a file? 1) Click the graph window you want to save and the graph window will become active, then choose File/Save from main menu or click the tool bar. an active window from a non active window e 2. In the save dialog window, choose the file name and file type you wish to save. Your choices are: Binary file (*.ghf), Text file (*.txt) and Microsoft Excel file (*.csv). The Binary format (*.ghf) will create a much smaller file size however, it can only be used in TestLink SE322. The Text format (*.txt) can be opened by TestLink SE322 and any other word processor program such as Microsoft Word, Notepad etc. The Microsolt Excel format (*.csv) can be opened by TestLink SE322 and Microsoft Excel. www reedinstruments com 19 How to load the recorded data from the memory of the meter and save it to a file? 1) Turn the meter on. 2) Press the “REC” button of the meter to start recording data. 3) After a while, press “REC” button again to stop recording data. 4) Connect the meter to a PC 5) Start the SE322 program. 6) Choose Data Logger from the main menu or click from tool bar. Refer back to the Datalogger section on page 17 for more instructions. Frequently Asked Questions Question: I connected the meter to a PC serial port and turned meter on, but it still shows “NO CONNECTION”. Answer: It could be that all serial port you’re using is occupied by another application, close all other applications. If it still don’t work. Restart your computer and run TestLink SE322 again. Question: How can I save the graph to a file which can be used in Microsoft Excel? Answer: When you save a graph to a file, the default file format is *.ghf and you can also select *.csv. CSV is an Microsoft Excel file format. You can then open it using Microsoft Excel. Question: How do I uninstall TestLink SE322? Answer: Launch the Add/Remove Programs applet out of the Control Panel, highlighting the SE322, and clicking on the Add/Remove button. This will remove the SE322 folder and files from your computer. Question: Why would loading data fail? Answer: This might be caused by the slow response from some of the PC. Question: How do I zoom into the graph? Answer: Left click (click the left mouse button) and drag the cursor to select the new extents and release the mouse button. Question: When I setup the real time sampling with a fast rate (eg. 0.1 sec), some of the sampling data might be lost. Answer: This might be caused by the slow response from some of the PC. www reedinstruments com 20
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