SL-4035SD SD Card Integrating Sound Level Meter - IEC 61672 Class 2, Real-Time Datalogging, RS232/USB

Product Introduction

Measurement Specification

• Measurement Type : SPL sound pressure level, Leq equivalent continuous noise level, MAX-S maximum value, and MIN-S minimum value
• Measurement Range : 30 to 130 dB
• Resolution : 0.1 dB
• Accuracy : Complies with IEC 61672-1:2013 Class 2; tested at 23 ± 5°C with a 94 dB input signal
• Frequency Range : 31.5 Hz to 8,000 Hz
• Frequency Weighting : A weighting and C weighting
• Time Weighting : Fast: 125 ms; Slow: 1 s
• Range Selection : Auto range: 30 to 130 dB; manual range: 30 to 80 dB and 80 to 130 dB, 50 dB per step
• Microphone : Electric condenser microphone with a 12.7 mm (1/2 inch) standard microphone head
• A-Weighting Frequency Response : 31.5 Hz ±3.0 dB, 63 Hz ±2.0 dB, 125 Hz ±1.5 dB, 250 Hz ±1.5 dB, 500 Hz ±1.5 dB, 1 kHz ±1.0 dB, 2 kHz ±2.0 dB, 4 kHz ±3.0 dB, 8 kHz ±5.0 dB
• AC Analog Output : 0.5 Vrms corresponding to each sound level; output impedance 600 ohm
• Calibration : Built-in external calibration VR; calibratable with a 94 dB sound calibrator, including SC-941, SC-942, and B&K Type 4226
• Display : 52 mm × 32 mm LCD with green backlight, which can be switched on or off
• Circuit : One-chip microprocessor LSI circuit
• Overrange Indication : Displays “----”

Product Features

• Data Logging : Real-time data logging to an SD memory card, supporting 1 GB to 16 GB cards
• Automatic Logging Interval : Selectable from 1 to 3600 seconds
• Manual Logging : Set the sampling time to 0 seconds and press the data logger button to save one reading; location numbers from 1 to 99 are available
• Data Format : Stores date and time information; SD card data can be transferred directly to a computer and analyzed in Excel
• Data Hold : Freezes the current display reading
• Peak Hold : Retains the maximum peak value
• Maximum and Minimum Values : Records and recalls maximum and minimum SPL values
• Data Interfaces : RS232 and USB computer interfaces
• Configuration : Clock, sampling time, frequency weighting, decimal point format, SD card formatting, and beep sound can be configured
• Power Management : Automatic power-off or manual power-off operation
• Operation : No additional software installation is required for basic data access; remove the SD card and read the recorded files on a computer

Product Information

• Operating Environment : 0 to 50°C; less than 85% RH
• Power Supply : Six UM3/AA 1.5 V batteries or a DC 9 V adapter
• Power Consumption : Approximately 12 mA during normal operation; approximately 51 mA while saving data to the SD card; LCD backlight adds approximately 30 mA
• Dimensions : 245 × 68 × 45 mm (9.6 × 2.7 × 1.9 inch)
• Weight : 489 g (1.08 lb)
• Communication : RS232 or USB computer interface; UPCB-02 RS232 cable and USB-01 USB cable are optional
• Included Accessories : Instruction manual and CA-06 hard carrying case
• Optional Accessories : SC-941 94 dB sound calibrator, SC-942 94/114 dB sound calibrator, SB-01 wind shield ball, 2 GB SD card, USB-01 USB cable, UPCB-02 RS232 cable, SW-U801-WIN data acquisition software, DC 9 V adapter, and CA-05A soft carrying case