Sound Level Meter

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Micro Noise Dosimeter    (Badge Type)
TES-660A /TES-660

Micro Noise Dosimeter (Badge Type)

Product Features
  • No Mic. Extension Cable required.
  • Lightweight and small size
  • Rechargeable battery
  • Calculates all the popular noise dose parameters  Wide dynamic range from 70 to a full 140dB
  • Measures simultaneously 3dB, 4dB, 5dB or 6dB exchange rates
  • Intrinsically safe (660A)


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,
                                       EN 60079-26: 2007
1/2-inch electret field replaceable threaded microphone
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
Real–time clock with calendar.
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.
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
Ten built–in (predefined) default setups are included.
Nine additional user–defined setups can be stored.
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
84(L)×49(W)×55(H)mm / 3.3(L)×1.9(W)×2.2(H)inch (with windscreen)
Approx. 77g (2.7oz), less mounting device
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:
I M1
EEx ia IIC T2 (222°C)
EEx ia I
(Ta = -20°C to +40°C)
Class 1
Division 1
Groups A, B, C and D.
Temperature classification T2