AA4C Vehicle Test Line Four type R6 batteries 15 MV/DB noise level meter

AA4C Vehicle test line auto insection noise level meter HY-104A

AC output: Output AC linear voltage, 6 V RMS corresponds to upper limit of each Measuring range

Max. Sound level holding: Decay rate: < 0,1 dB/s

Microphone: Half-inch prepolarized condenser microphone Type HY205

Sensitivity: 50 mV/Pa or -26dB re. 1V

Calibration Method: Trimmer adjustment using Sound Level Calibrator Type HY603

Calibration Reference Conditions: Sound field: free field condition

Reference incidence direction: perpendicular to microphone diaphragm (0°incidence)

Reference sound pressure level: 94 dB re. 20μPa

Reference frequency: 1 kHz

Reference temperature: 23℃

Reference range: 50 dB to 110 dB

Warm-up time: 10 s

Batteries: Four type R6 batteries

Battery life: Approx. 18 hours for continuous operation

Complete unit current: < 35 mA

Temperature Range: (0~40) ℃

Humidity Range: (25~90)% RH

Dimensions: Length × width × depth: 257 mm × 74 mm × 24mm

Weight: 500 g with batteries

Measuring range: (35~130) dBA, (45~130) dBC, in three level ranges:

L: (35~90)dBA, (45~90)dBC

M: (50~110)dBA, (50~110)dBC

H: (70~130)dBA, (70~130)dBC

Frequency range: In accordance with IEC 61672 for Class 2 and IEC60651 for Type 2 sound level meters

A-weighting and C-weighting

Detector: Characteristics: RMS indication in accordance with IEC 61672 and IEC 60651

Dynamic range: 60 dB

Time weighting: F (fast)

Display: 3 1/2 digital LCD display with 0,1 dB display resolution Overload, underrange and low battery warning indicator

Read out interval: updated once per second

DC output: Proportional to continuous A- weighting, F-time weighting sound level

Nominal output voltage: 15 mV/dB

Shanghai AA4C AUTO Maintenance Equipment Co., Ltd is professional auto maintenance equipment manufacturer since 1995. AA4C means Always and All for (4) Customer. Our factory covers an area of more than 20, 000 squares meters and with our up-today manufacturing facilities, high-tech industrial, product developing manufacturing sales and perfect after-service with a total capital of more than ten millions. For many years our company has been awarded as "Enterprise with High Reputation" "Enterprise with High Credit in Quality " and "China National Grade AAA Enterprise, etc. Besides, We have passed ISO9001, authenticated by 2000 International Quality Control System.

We are mainly dealing AA4C products development, product design as well as OEM/ODM manufacturing...Our Product has been shipped to worldwide (Europe, East Europe, North & South America, Africa, Australia, Middle East, Asia as well as different province in China)

Facing the future opportunities and challenges, AA4C will be still adhering to "Seeking higher & being practical" trying to enlarge the inter courses and cooperation with other producers in the field both at home and abroad; And exert ourselves to pay back our clients with high-quality products and perfect after-service.