EXTECH 407750 Digital Sound Level Meter数字式分贝计/声级计/噪音测试仪
Features:
• Auto/Manual ranging from 30 to 130dB in 6 ranges
• Meets ANSI and IEC Type 2 standa***
• A and C selectable frequency weightings
• Fast and Slow selectable resp***e times
• Background noise absorber mode for machine noise
measurements filters ambient noise
• Large 3 1/2 digit display with 0.1dB resolution
with backlighting and analog bargraph
• Electret condenser microphone provides 1.5dB accuracy
• Min/Max plus analog output and tripod mount
• Max Hold latches maximum value on display
• RS-232 interface for capturing data directly
on a PC, optional Windows® compatible software
• Complete with batteries and carrying case
Applicati***:
• Machine noise evaluation
• OSHA compliance testing
• Community noise measurement
• Noise ordinance
• PC interface for data collection
Specificati***
Digital Display 3-1/2 digit (1999 count) Autorange LCD
Bargraph Display 50dB display range (1dB resolution);
Measurement Range 30 to 130dB (35 to 130dB for “C” weighting)
Resolution 0.1dB
Accuracy &plu***n;1.5 dB @ 94dB for a 1kHz sine w***e
Microphone Electret Condensor .24"(6mm dia.) type
Frequency Weighting “A” and “C” type
Time Resp***e Slow/Fast
Sampling time updates every 0.5seconds
Measurement frequency range 31.5Hz to 8KHz
Analog output AC: 0.707Vrms (full scale); DC: 10mVDC/dB
Applicable Standa*** IEC 651 Type 2, ANSI S1.4 Type 2
Power Supply 9V battery , optional AC adaptor
Dimensi*** 10 x 3.1 x 1.5"(256 x 80 x 38mm)
Weight 8.5oz. (240g)