Sound Level Meter As-156a & As-156b

Product Description

The Sound Level Meter is divided into two types: ( AS-156A Accuracy : ±2dB), (AS-156B Accuracy : ±1dB ). Can memorize 30 groups of measurement results and measuring conditions. Permits choice “A” / “C” / “F” weighting and “Fast” / “Slow” response times. Offers 4 measurement parameters: Lp ( soundlevel). Leq (Equivalent Continuous A Sound Level). Lmax (Maximum Sound Level) and LN (Percent of all readings over alarm value set).

Product Feature

* DC output :1 0 m V / d B.

* Auto range selection and digital display with no guessing errors.

* Can memorize 30 groups of measurement results and measuring conditions.

* Permits choice “A”, “C” , “F” weighting and “Fast” / “Slow” response times.

* Offers 4 measurement parameters: Lp (sound level); Leq (Equivalent Continuous A Sound Level ); Lmax ( Maximum Sound

Level) and LN (Percent of all readings over alarm value set ).

* Use USB data output with connection PC.

* Provide Bluetooth data outputchoice.

Product Parameters

Resolution	0.1dB
Accuracy	AS-156A: ± 2dB
AS-156B: ± 1dB
Measurable Parameters	Lp (sound level)
Leq (Equivalent Continuous A Sound Level)
Lmax (Maximum Sound Level)
LN (Percent of all readings over alarm value set)
Measuring Range	Lp: 30~130dB
Leq: 35~130dB
LN: 0~100%
Frequency Weighting	“A” / “C” / “F” (Flat)
Time Weighting	“Fast” ( 125ms ) / “Slow” ( 1 second )
Microphone	1/2 inch electret condenser type
Memory	Store 30 group measurement conditions and data
Built In Calibration Signal	94dB at 1kHz (sinusoidal)
Alarm Value Set	30~130 dB
Frequency Range	AS-156A:: 20~8,000Hz AS-156B: 20~12,500 Hz
Alarm Output	LED and optional relay contact (NC)
Size	140x70x30 mm
Power Supply	4x1.5vAAA Um-4 Battery
Weight	130 g (Not including batteries)

Product Accessories

Standard Accessories	Main Unit
Windscreen
Carrying Case
Operation Manual
Optional Accessories	Sound Level Meter Calibrator
USB data output
RS-232 data output
Bluetooth™ data output