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Lutron
The Lutron SL-4035SD Integrating Sound Level Meter is an advanced instrument designed for precision sound measurement and data logging, marking a significant step forward in the field of acoustic measurement. Its design and functions are engineered to meet IEC 61672 Class 2 standards for frequency and time weighting. This durable and compact device is equipped with a microcomputer circuit to ensure high accuracy and long-term stability.
The SL-4035SD features an innovative real-time SD memory card Datalogger, offering immense flexibility and ease of use.
Model Number SL-4035SD
Manufacturer Lutron
Circuit Custom one-chip of microprocessor LSI circuit
Measurement Type Integrating Sound Level Meter (Leq, SEL, SPL, MAX-L, MIN-L)
Measurement Range 30 to 130 dB
Resolution 0.1 dB
Accuracy Meets IEC 61672 Class 2 standards (Accuracy tolerance varies by frequency)
Frequency Range 31.5 Hz to 8,000 Hz
Frequency Weighting A and C networks
Time Weighting Fast (125 ms) and Slow (1 s)
Range Selection Auto range (30 to 130 dB) & Manual range (2 steps: 30-80 dB, 80-130 dB)
Microphone Type/Size Electric condenser microphone, 1/2 inch (12.7 mm DIA.)
Display LCD size: 52 mm x 32 mm with green light backlight (ON/OFF)
Data Logging Real-time SD Card Datalogger
Memory Card Capacity SD memory card (1 GB to 16 GB)
Datalogger Sampling Time Auto: 1 second to 3600 seconds; Manual: 0 second (position 1 to 99)
Data Output RS232/USB PC computer interface
AC Output AC 0.5 Vrms corresponding to each range step (Output impedance: 600 ohm)
Calibration Built-in external calibration VR (94 dB level)
Power Supply 6 x DC 1.5 V batteries (UM3, AA) or DC 9V adapter input (optional)
Operating Temperature 0 to 50 ℃
Operating Humidity Less than 85% R.H.
Dimensions 245 x 68 x 45 mm (9.6 x 2.7 x 1.8/1.9 inch)
Weight Approximately 489 g / 1.08 LB
Instruction manual, Hard carrying case (CA-06)