Standard applied

ANSI S1.25: 1992 Personal Noise Dosimeter

IEC 61252: 2002 Personal Sound Exposure Meters

Intrinsic safety (660A): EN 60079-0: 2006, EN60079-11: 2007, EN60079-26: 2007

Microphone

1/2-inch electret field replaceable threaded microphone

Display

128x64 pixel graphics LCD

Measurement Ranges

Dynamic Range: 70dB to 140dB

Peak Range: 103dB to 143dB

Frequency Weightings

A, C and Z, Type 2

Time Weightings

Fast, Slow and Impulse

Exchange Rate

3dB, 4dB, 5dB or 6dB

Threshold Level

70 – 90dB in 1dB steps

Criterion Level

70 – 90dB in 1dB steps

Alarm

warning indicators

LED showing level noise exceedances during run

Clock

Real–time clock with calendar.

Memory

Results from 30 measurements can be stored for later viewing and download.

Measurement

Control

Measurement Duration: May be set 10 to 55 min in 5min steps or 1 to 24 Hrs in 1hr steps.

Timers

Up to 99 timers (automatic start and stop) can be set (maximum up to one month ahead
of measurement time).

Timer Controlled Started / Stop: Up to 16 timers can be set up from the PC software or meter keypad.

Logging

storage (results)

At least 100 hours at 4 profiles every minute with unit showing remaining memory recording time in hours when switched on.

Stored profile values

Lavg, LZpk, Leq, LCpk

Storage interval

1, 5, 10, 30minutes and 1or 2 hours can be set

Setup

Ten built–in (predefined) default setups are included.

Nine additional user–defined setups can be stored.

Battery

Li Polymer (3.7V/470mAh)

Charging unit / PC interface

Complete meter fits neatly into the charging unit (DS-01).

Quick battery recharge in less than 90 mins from completely empty.

Communications via the charging unit (DS-01) and USB to PC.

Operating / Storage Temperature & Humidity

0 to 50ºC (32 to 122ºF),10 to 90%RH / -10 to 60ºC (14 to 140ºF),10 to 75%RH

Size

84(L)×49(W)×55(H)mm / 3.3(L)×1.9(W)×2.2(H)inch (with windscreen)

Weight

Approx. 77g (2.7oz), less mounting device

Accessories

Instruction manual, Carrying case, Charging unit (DS-01), AC adapter for DS-01 (up to 4 linked DS-01), CD software, USB cable.

The 660A Intrinsically Safe is labeled with the following:

ATEX:

I M1

II 1G

EEx ia IIC T2 (222°C)

EEx ia I

(Ta = -20°C to +40°C)

FM/CSA:

Class 1

Division 1

Groups A, B, C and D.

Temperature classification T2