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
Accuracy	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

Buying Guide

When you choose the model number of Amittari instrument, the default is standard delivery. If you need other optional accessories, please tell our customer -service worker.

The following three items are basic optional accessories choices

Standard Accessories+USB data output

Standard Accessories+Bluetooth data output

Bluetooth Accessories

Amittari instruments generally can be supplied with Bluetooth data output function ( except few instruments ) . As Bluetooth data output is included in optional accessories, not standard delivery, it needs to be indicated when choose 10 meters to 100 meters distance can be chosen. Please kindly contact with the customer-service worker if you need Bluetooth data output.