Sound Level Meter - SL-4033SD - Bismillah Scientific Co.

The SL-4033SD Sound Level Meter provides accurate and reliable measurements of sound levels, with real-time data logging capabilities, making it an essential tool for various industrial, environmental, and HVAC applications.

Exceptional Features of the SL-4033SD:

1. Real-Time Data Logger: Saves measuring data along with time information (year, month, date, hour, minute, second) into the SD memory card, enabling easy download to Excel for further data analysis without extra software.
2. High Accuracy and Resolution: Features high accuracy (±1.4 dB at 1 kHz) and resolution (0.1 dB), ensuring precise and repeatable measurements.
3. User-Friendly Design: Equipped with a large LCD display with green backlight for easy reading, data hold function, and memory recall for maximum and minimum values.
4. Advanced Connectivity: Includes RS232/USB computer interface for data output, enhancing data management and integration with other systems.
5. Durable and Portable: Constructed with a robust housing and supplied with a hard carrying case, making it easy to carry and durable for long-lasting use.

Specifications
Circuit	: Custom one-chip of microprocessor LSI circuit.
Display	: LCD size	: 52 mm x 38 mm.
	: LCD with green backlight (ON/OFF).
Measurement Range	: 30 – 130 dB.
Resolution	: 0.1dB.
Function	: dB (A & C frequency weighting)
	: Time weighting (Fast, Slow)
	: Peak hold, Data hold.
	: Record (Max., Min.).
Accuracy	: Characteristics of “A” frequency weighting network meet IEC 61672-1-2013 class’s 1.
	: Under 94 dB input signal, the accuracy are	: 31.5Hz reading± 1.5 dB, 63Hz reading± 1.0 dB, 125Hz reading± 1.0 dB, 250Hz reading± 1.0 dB, 500Hz reading± 1.0 dB, 1KHz reading± 0.7 dB, 2KHz reading± 1.0 dB, 4KHz reading± 1.0 dB, 8KHz reading+ 1.5 dB -2.5dB, 12.5KHz reading+ 2.0 dB -5.0dB, 16KHz reading+ 2.5 dB -16.0dB
	: Remark	: The above spec. are tested under the environment RF Field Strength less than 3 V/M & frequency less than 30 MHz only.
Frequency Weighting Network	: Characteristics of A & C.
	: A weighting	: The characteristic is simulated as “Human Ear Listening” response. Typical, if making the environmental sound level measurement, always select to A weighting.
	: C weighting	: The characteristic is near the “FLAT” response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment.
Data hold	: Freeze the display reading.
Peak hold	: To keep the peak (max.) measurement value.
Time weighting	: Fast – t = 125 ms. * “Fast” range is simulated the human ear response time weighting.
	: Slow – t = 1 Sec. * “Slow” range is easy to get the average values of vibration sound level.
Range selector	: Auto range	: 30 to 130 dB.
	: Manual range	: 3 range, 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step, with over & under range indicating.
Frequency	: 31.5 to 16 KHz.
Microphone type	: Electric condenser microphone.
Microphone size	: Out size, 12.7 mm DIA. (1/2 inch).
Calibration VR	: Build in external calibration VR, easy to calibrate on 94 dB level by screw driver.
	: Calibrated via external SOUND CALIBRATOR (SC-941, optional).
Calibrator	: B & K (Bruel & kjaer), Multifunction Acoustic Calibrator 4226.
Datalogger Sampling Time Setting range	: Auto 1, 2, 5, 10, 30, 60, 120, 300, 600, 1600, 3800 seconds. # If I set to 1 second ,memory data may loss.
Memory Card	: SD memory card. 1 GB to 16 GB.
Advanced setting	: Set clock time (Year/Month/Date, Hour/Minute/Second)
	: Decimal point of SD card setting
	: Auto power OFF management
	: Set beep Sound ON/OFF
	: Set sampling time
	: SD memory card Format
Over Indication	: Show ” – – – – “.
Data Hold	: Freeze the display reading.
Memory Recall	: Maximum & Minimum value.
Sampling Time of Display	: Approx. 1 second.
Data Output	: RS 232/USB PC computer interface.
	: Connect the optional RS232 cable. UPCB-02 will get the RS232 plug.
	: Connect the optional USB cable. USB-01 will get the USB plug.
AC output	: /
Power off	: Auto shut off (approx. 10 minutes) saves battery life or manual off by push button.
Operating Temperature	: 0 to 50 ℃.
Operating Humidity	: Less than 85% R.H.
Power Supply	: AlNaline or heavy duty DC 1.5V battery.
	: (UM3, AA) x 6 PCs, or equivalent.
	: DC 9V adapter input. (AC/DC power adapter is optional).
Power Current	: Normal operation (w/o SD card save data and LCD Backlight is OFF)	: Approx. DC/mA.
	: When SD card save the data but and LCD Backlight is OFF)	: Approx. DC / 3mA.
	: AC/DC power adapter is optional. Consumption will increase approx. 8mA
Weight	: 320 g/0.70 LBS. (Without battery)
Dimension	: 245 x 68 x 45 mm. (9.6 x 2.7x 1.8 inch).
Accessories Included	: Instruction manual	: 1 PC
	: Hard carrying case, CA-06	: 1 PC
Optional Accessories	: Sound calibrator (94 dB), SC-941.
	: Measurement, always select to A Accessories. Sound calibrator (94/114 dB), SC-942.
	: Weighting. Sound wind shield ball, SB-01.
	: SD Card
	: USB cable, USB-01.
	: RS232 cable, UPCB-02.
	: Data Acquisition software
	: SW-U801-WIN.
	: AC to DC 9V adapter.
	: Soft carrying case, CA-05A.

Technical Specifications
Display	: Type	: Large LCD with green backlight (ON/OFF)
Display	: Size	: 52 mm x 38 mm
Measurement Functions
Sound Pressure Level (SPL)	: Range	: 30 to 130 dB
	: Resolution	: 0.1 dB
	: Accuracy	: ±1.4 dB at 1 kHz
	: Frequency Weighting	: A & C weighting networks
	: Time Weighting	: Fast (125 ms), Slow (1 s)
	: Peak Hold	: Captures the peak (max.) measurement value
	: Auto Range	: 30 to 130 dB
	: Manual Range	: 3 ranges, 30 to 80 dB, 50 to 100 dB, 80 to 130 dB
General Specifications	: Microphone	: Electric condenser microphone, 12.7 mm DIA. (1/2 inch)
	: Calibration	: Built-in external calibration VR, easy to calibrate on 94 dB level using a screw driver
	: Frequency Range	: 31.5 Hz to 16 kHz
Data Logger	: Automatic	: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds
	: Manual	: Push the data logger button once to save data
	: SD Card Capacity	: 1 GB to 16 GB
Power Consumption	: Approx. DC 12 mA (normal operation without SD card save data and LCD backlight off)
Power Consumption	: Approx. DC 31 mA (when SD card saves data and LCD backlight off)
Operating Environment	: Temperature	: 0 to 50℃
Operating Environment	: Humidity	: Less than 85% RH
Power Supply	: DC 1.5V battery (UM3, AA) x 6 PCs or DC 9V adapter
Dimensions	: 245 x 68 x 45 mm (9.6 x 2.7 x 1.8 inch)
Weight	: 320 g (0.70 lb, without battery)

Accessories Included:

Instruction Manual: 1 PC
Hard Carrying Case (CA-06): 1 PC

Optional Accessories:

Sound Calibrator (94 dB), SC-941
Sound Calibrator (94/114 dB), SC-942
Sound Wind Shield Ball, SB-01
SD Card
USB Cable, USB-01
RS232 Cable, UPCB-02
Data Acquisition Software, SW-U801-WIN
AC to DC 9V Adapter
Soft Carrying Case, CA-05A

Advanced Features:

Microprocessor Circuit: Ensures high accuracy and reliability.
Auto/Manual Data Logging: Enhances data management and analysis capabilities.
Memory Function: Displays the maximum and minimum values with recall.
Data Hold Function: Freezes the display reading for convenient recording.
Auto Power Off: Conserves battery life by automatically shutting off the meter.
Easy Calibration: Built-in external calibration VR for easy calibration on 94 dB level.
RS232/USB Interface: Enhances data management and integration with computer systems.

Applications:

Environmental Monitoring: Measure sound levels in various environmental studies.
Industrial Maintenance: Monitor sound levels in various industrial applications.
HVAC Systems: Check sound levels in heating and cooling systems.

Invest in the SL-4033SD Sound Level Meter for precise and reliable sound level measurements, ensuring high performance and versatility in various industrial, environmental, and HVAC applications.