SLM-270 Digital Audio Decibel Meter Sound Level Meter Noise Level Tester

This Sound Level Meter is designed to meet the measurement requirements of Safety Engineers in Health and Industrial Safety fields and in other various environment where Sound Quality Control is needed such as in factory, home, office, traffic road, theater, etc.

Features:

• Designed to meet the following standards:
  • International electrician committee standard: IEC PUB 651 TYPE2
  • US national standard: ANSI S1.4 TYPE2
• Fast & Slow Time weigting selection
• Automatic backlight
• Maximum value holding function
• Auto power off after 10 minutes without operation
• Alarm symbol display for over and under min and max range
• A & C Frequency weighting selection
• Both AC and PWM signal output are available
• Calendar (date and time) function (set manually in the meter)
• Bar graph indication
• Low battery indication
• Data recording function ( 4700 sets of data)
• Data recording full indication
• Equipped with sponge ball to filter-out unwanted signals
• With tripod mounting hole
• Connect with the PC through USB, provides data record downloading, real-time data sampling analysis, and printing graph & data functions

Specifications:

• Calibration sound source: 94dB@1KHz
• Measurement range: 30~130dBA,35~130dBC
• Accuracy: ±1.5dB（reference sound pressure standard，94dB@1KHz）
• Frequency response: 31.5Hz~8.5KHz
• Resolution: 0.1dB
• Measuring level: 30~80, 50~100, 60~110, 80~130, 30~130
• Dynamic range: 50dB/100dB
• Overload indication: OVER / UNDER
• Frequency weighting characteristic: A and C
• Digital display: 4 digits
• Analogy bar graph: 1dB/1 bar graph
• Sampling rate: FAST:8times/second;SLOW:2times/second
• AC signal output: 4Vrms/ full bar graph, output impedance is about 600 ohm
• PWM signal output: Duty cycle = 0.01X db value / 3.3 x 100%
• Dynamic characteristic: FAST(high speed)/SLOW(low speed)
• Calendar accuracy: ±30seconds/day
• Data storage quantity: 4700 sets of data
• Microphone: 1/2inch polarization capacitance microphone
• Compatible Operating system for PC connection: XP /VISTA / windows 7,8 & 10
• Operating Temperature:0~40°C
• Operating Humidity: ≤80%RH
• Power supply: 4 x 1.5V Alkline battery
• Dimension: approx. 70 x 35 x 256mm
• Weight: approx. 244g (without battery)
• Battery life : approx. 20h continuous use (Alkaline batteries)

Set Includes:

• 1 x Sound Level Meter
• 1 x Sponge Ball (Windscreen Filter)
• 1 x CD Software
• 1 x USB Connection cable
• 1 x AC output wire
• 1 x English Operation Manual
• 4 x 1.5 AA Alkaline Batteries
• Carrying Case
• Standard Factory Packaging