weighting

A,C,Z

Corresponding time

Fast and slow

range

110 dBA dynamic measurement range.

Overall range 30-140 dBA (single range)

standard microphone

First level accuracy: microphone QE4936

Second level accuracy: microphone QE7052

Memory

2MB (recording per minute for 34 days)

Maximum peak value

143dBa (sampling peak)

Exchange rate

3、4、5dBA

physical property

size

28.4cm(L) x 7.1cm(W) x 3.3cm(H)

weight

SE-401 type: 367.5g (including preamplifier and microphone)

SE-402 type: 380.5g (including preamplifier and microphone)

SE-401-1S model: 410g (including preamplifier and microphone)

SE-402-1S type: 410g (including preamplifier and microphone)

casing

ABS engineering plastic, IP65 (enclosure meets IP65), excluding microphone and other connecting parts.

Tripod fixation

There is a standard camera tripod hole on the back, with ¼ "-20 thread

Fall protection

2 meters, twice on the front and twice on the back. In case of microphone damage, it does not affect the functionality and stored data.

environment

operate temperature

-10 degrees -50 degrees

humidity

0～90%RH， non-condensing

storage temperature

-20 ° C to 60 ° C

atmospheric pressure

Operation: 80-100kPa Storage: 50-150kPa

Power/Electrical Characteristics

battery

Polymer lithium battery: standard model 2500mAHr/intrinsic safety model 1500mAHr, rechargeable running time: standard model minimum 18 hours (backlight off)/intrinsic safety model 8 hours

BATTERY LIFE

3 years or 500 cycles

Battery charging

The device can be charged using USB. Battery charging time: 8 hours (approximately)

Memory

2MB (recording per minute for 34 days)

standard microphone

First level accuracy: microphone QE4936, second level accuracy: microphone QE7052

Preamplifier

The preamplifier is directly connected to the microphone, with a half inch interface

extension

Remote measurement is possible, with no significant signal loss up to 15 meters (intrinsic safety models are not available)

interface

AC/DC output

3.5mm stereo (top AC, center ring DC, ring GND); Intrinsic safety model not available

I/O interface

RS-232 (intrinsically safe models cannot use I/O interface)

USB

Compliant with USB 2.0 and MINI-USB interfaces

Compliant with standards

IEC61672-1(2002)

Electroacoustic, Sound Level Meter Part 1: Specifications

ANSIS1.43-1997（R2007）

American National Standard: Integral Average Sound Level Specification

ANSIS1.4-1983（R2006）

Specification of Sound Level Meter

CE

self-certified