endeavour ET2146 Sound Level Meter Instruction Manual

endeavour ET2146 Sound Level Meter

Product Information

The Sound Level Meter is a device used to measure the intensity of sound in decibels (dB). It is designed to provide accurate and reliable measurements for various applications.

Functions Description

The Sound Level Meter offers various functions including data logging, frequency weighting selection, MAX/MIN recording, and more. These functions enhance the versatility and usability of the device.

Specification

The specifications of the Sound Level Meter include:

Measurement

• Range: XX dB to XX dB
• Accuracy: ±X dB
• Frequency Range: XX Hz to XX kHz
• Resolution: X.X dB
• Power Supply: X AAA batteries or DC 9V power supply (not included)
• Dimensions: XX mm x XX mm x XX mm
• Weight: X grams
• Description

Meter Description:

• The Sound Level Meter features a clear LCD display that shows measurement results and various indicators.
• It also includes buttons for easy navigation and accessing different functions.

Symbols Used on LCD Display:

• The LCD display may contain symbols to represent different modes, settings, or measurement parameters. Refer to the manual for a detailed explanation of these symbols.

Calibration Procedures

Refer to the manual for detailed instructions on calibrating the Sound Level Meter to ensure accurate and reliable measurements.

Measurement Preparation

Before taking measurements, ensure that the Sound Level Meter is properly calibrated and set up according to your specific requirements. Follow the instructions provided in the manual for accurate measurement preparation.

Operating Procedure

Refer to the manual for a step-by-step guide on operating the Sound Level Meter, including button functions, setting adjustments, and data logging procedures.

Notice

Read and understand the entire user manual before operating the Sound Level Meter. Follow all safety precautions and guidelines provided to ensure safe and effective use of the device.

Please read this manual before switching the unit on. Important safety information inside.

Operating Instruction for Sound Level Meter

Product Introduction

• This Sound Level Meter is designed for noise project; quality control; illness prevention and cure and all kinds of environmental sounds measurement.
• It is applied to the sounds measurement at factory, school, office, traffic access and household, etc.

Safety Information

Read the following safety information carefully before attempting to operate or service the meter.

• Use the meter only as specified in this manual:
  Environment Conditions

• Altitude lower than 2000 meters

• Relatively humidity <90%RH

• Operation Ambient 0 to 40°C
  Maintenance & Clearing

• Repair or servicing not covered in this manual should be performed by qualified personnel.

• Periodically wipe the case with a dry cloth.

• Do not use solvents or eradicator on this instrumen.
  Safety Symbols

• Comply with EMC
  Functions Description

• This unit confirms to the IEC61672-1 CLASS2 for Sound Level Meters.

• MAX & MIN measurements.

• Over range display.

• Under range display.

• A & C Weighting.

• FAST & SLOW response.

• Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder.

Specification

• Standard Applied: IEC61672 -1 CLASS2
• Accuracy: ±1.4dB
• Frequency Range: 31.5Hz to 8kHz
• Dynamic Range: 50dB
• Level Ranges: Lo: 30dB to 80dB / Med: 50dB to 100dB / Hi: 80dB to 130dB / Auto: 30dB to 130dB
• Frequency Weighting: A/C
• Time Weighting: FAST (125ms); SLOW (1s)
• Microphone: 1/2 inch electret condenser microphone
• Display: 4 digits LCD display with a resolution of 0.1dB
• Display Update: 2 times/sec.
• Max Hold: Hold the Maximum reading
• Min Hold: Hold the Minimum reading
• Hold: Hold the readings
• Alarm Function: “OVER”is when input is more than upper limit of range; “UNDER”is when input is less than lower limit of range.
• Analog Output: AC/DC outputs from earphone outlet, AC=1Vrms; DC=10mV/dB
• Data Output: USB data traffic, Bluetooth
• Auto Power Off: Meter automatically shuts down after approx. 15 minutes of inactivity.
• Power Supply: One 9V battery, 006P or NEDA1604 or IEC 6F22.
• Operation Temperature: 0 to 40°C
• Operation Humidity: 10%RH to 90%RH
• Storage Temperature: -10 to 60°C
• Storage Humidity: 10%RH to 75%RH
• Dimension (L x W x H): 278 x 76 x 50mm
• Weight: 350g

Description

Meter Description

1. Windscreen
2. LCD Display
3. Backlight Button
4. MAX/MIN Button
5. REC Button
6. HOLD Button
7. Frequency Weighting Select Button
8. FAST/SLOW Button
9. SETUP/Bluetooth Button
10. LEVEL Button
11. Power Button
12. Microphone
13. External DC 9V Power Supply Terminal
14. USB Interface
15. AC/DC Signal Output Earphone Outlet
16. Calibration Potentiometer
17. Tripod Mounting Screw
18. Battery Cover

Symbols Used on LCD Display

1. Under Range
2. Maximum Hold
3. Bluetooth
4. Minimum Hold
5. Fast Response
6. Slow Response
7. Over Range
8. Range Indicate
9. Date/Time Indicate
10. 4 Digits
11. Auto power off
12. Low Battery Indicate
13. Recording Data Into Computer
14. Memory Full
15. C-Weighting (Response to machine monitor)
16. A-Weighting (Response to human sense)
17. Data Hold Function
18. Auto Level Range Selection

Button & Functions

Backlight Button

• Turn the backlight On/Off.
• Datalogger Response setting:
  1. Press the Backlight Button continuously until “Int” symbol appears after the meter turn on.
  2. Press the LEVEL Button to set up the data memory response.
  3. Then press the HOLD Button to keep the setting.

MAX/MIN Button

• Maximum and Minimum hold Press the MAX/MIN Button for one time to enter MAX/MIN measurement, “MAX” will appear on LCD, maximum sound level will be captured and held until higher sound level is captured.
• Press the MAX/MIN Button again, “MIN” will appear on LCD and minimum sound level will be captured and held until new lower sound level is captured.
• Press the MAX/MIN Button one more time to exit MAX/MIN measurement.

REC Button
Datalogger Function

• Press the REC Button after it power on, the display will show “REC” to start Data Recording.

• Press the REC Button again to exit the record.
  Note: In order to avoid data error, please don’t power it off under REC condition, when the REC function is deleted then it can power off.
  Adjusting Datalogger Response

• Press the Backlight Button continuously before power it on, then press the Power Button, it will be displayed as following.

• Press the LEVEL Button to adjust memory time, press the HOLD Button to hold the setup.

Data Zero Function
Press the REC Button continuously before power it on, loosen the button when the display showing “CLR” after the meter power on, which indicates that the data in Datalogger has been deleted.

HOLD Button
Press the HOLD Button, the hold function freezes the reading in the display.
Frequency Weighting Select Button

• A: A-Weighting
• C: C-Weighting

FAST/SLOW Button
Time weighting selection.
FAST: St sampling measurement, 1 time per 125ms.
SLOW: Slow sampling measurement, 1 time per second.
SETUP/Bluetooth Button
The Time Chip Adjustment and Bluetooth Switch

1. Press the SETUP Button and then power it on, when “TIME” symbol displays then loosen the SETUP Button, the meter will be under time adjustment mode, at the time the display will show the date as following.
2. Press the SETUP Button second time, the display showing; the display showing “minute” adjustment mode, press the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
3. Press the SETUP Button third time, the display showing; the display showing “hour” adjustment mode (h-P=P.M, h-A=A.M), press the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
4. Press the SETUP Button fourth time, the display showing; the display showing “date” adjustment mode, press the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
5. Press the SETUP Button fifth time, the display showing; the display showing “month” adjustment mode, press the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
6. Press the SETUP Button sixth time, the display showing; the display showing “year” adjustment mode, press the LEVEL Button to make the adjustment, press the HOLD Button to keep the setup.
7. Press the SETUP Button seventh time, the display showing; the display showing initialization of the time chip, press the HOLD Button to keep the setup; time and date have returned to factory setup; when the battery is exhausted or replaced, if the time can’t be adjusted then please initialize the time chip first.

USB Communications Setting

• Turn on the meter, connect the meter with the computer correctly, choose the software COM3 (COM4).
• Then press the SETUP Button, “ ” disappears from the display to indicate and disable auto power off, that the USB data is transmitting

Bluetooth Communications Setting
When you press the SETUP Button or REC Button, “ ” disappears from the display to indicate and disable auto power off, that the Bluetooth data is transmitting.

LEVEL Button: Level Range Selection
Each time you press the LEVEL Button, the level range will change between “Lo” level, “Med” level, “Hi”‘ level and “Auto” level in the circular.

Power Button
Turn the meter power ON/OFF.

External DC 9V Power Supply Terminal

• For connection with DC 9V power supply.
• Aperture size: External diameter: 3.5mm; Internal diameter: 1.35mm.

USB Interface
USB signal output is a 9600 bps serial interface.

AC/DC Signal Output Earphone Outlet

• AC Output Voltage: 1Vrms corresponding to each range step
• AC Output Impedance: 100Ω
• DC Output Voltage: 10mV/dB
• DC Output Impedance: 1kΩ

Calibration Potentiometer (CALL)
For external standard level calibration adjustments.

Calibration Procedures

1. Make the following switch settings:
   • Frequency Weighting: A-Weighting
   • Time Weighting: FAST
   • Level Range: 50 to 100dB
2. Insert the microphone housing carefully into the 1/2 inch insertion hole of the calibrator (94dB at 1kHz).
3. Turn on the switch of calibrator and adjust the CALL potentiometer of the unit 94.0dB is displayed.
   Note: All products are well calibrated before shipment. Recommended recalibration cycle 1 year.

Measurement Preparation

1. Remove the battery cover on the back and put in one 9V battery.
2. Recover the back cover.
3. When battery voltage drops below the operating voltage or battery aging, this symbol “ ” will appear on LCD, replace the 9V battery.
4. When the AC adapter is used, insert the plug of the adapter (3.5Ø) into the DC 9V connector on the side panel.

Operating Procedure

1. Power on the meter.
2. Press the LEVEL Button to select desired level, base on “UNDER” or “OVER” do not appear on LCD.
3. Select “dBA” for general noise sound level and “dBC” or measuring sound level of acoustic material.
4. Select “FAST” for instant sound and “SLOW” for average sound level.
5. Select the MAX/MIN Button for measuring maximum and minimum noise level.
6. Hold the instrument comfortable in hand or fix on tripod and measure sound level at a distance of 1~1.5 meter.

Notice

• Do not store or operate the instrument at high temperature and high humidity environment.
• When not in use for long time, please take out the battery to avoid battery liquid leakage and cautery on the instrument.
• When using the instrument in the presence of wind, it is a must to mount the windscreen to not pick up undesirable signals.
• Keep microphone dry and avoid severe vibration.

Accessories

• Instruction Manual
• Installation CD
• Screwdriver
• Tripod Mounting
• Battery
• Power Source
• 3.5Ø Earphone Plug
• Windscreen
• Software
• USB Interface Cable

Installing the Software

1. Start Windows.
2. Insert the CD into the CD-drive.
3. Run “SETUP.exe” installation program in file DISK1, install it to the referred directory
4. Install CP210X drive software, connecting the meter with the computer by USB interface, install CP2102 drive software in “My computer property:\hardware\facility management\ COM CP210X USB”.
5. USB Drive Installation.
   • Copy the CP210XWIN Drivers to a certain directory, such as “C:\ usb_driver”.
   • Connect the USB to the computer, the Windows system will show finding a new hardware, choose specific directory “C:\ usb_driver” according to the instruction.
   • After Driver installation, a new COM port will be added to the Ports in the Device Manager, port number will be ranged following the primary COM ports, such as “COM3 or COM4”.
6. Once the drive software is installed, start the application software, connect the meter to the computer by USB, then search for the COMX port occupied by CP210X, press the SETUP Button, the “ ”symbol will not appear on the display, which indicate the meter is transmitting data to the computer.
7. More information please refer to the software help document.

Mobile APP Software

1. Start APP
2. Click “Connect Dcvice” to search for Bluetooth devices, and click Corresponding Equipment.
3. Select “Environment Meter” to enter the instrument display interface.
4. View real-time display noise data and select control instructions.
5. More information please refer to the software help document.

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