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Sound Level Meter Type 1 – Spectrum Analyser (1/1 and 1/3 octave bands)

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SINUS TangoPlus Integrating Sound Level Meter

Spectrum Analyser (1/1 and 1/3 octave bands)

The TangoPlus sound level meter is a low cost meter with a 1/1 and 1/3 octave analyser which is suitable for workplace and environmental noise assessments. The TangoPlus sound level meter is very easy to use and has high functionality, as well as a measurement range of 110 dB.

Tango Plus has a very low power consumption. Two AA batteries provide 40 hours of operation time.

The sound level meter can be supplied as either Class 1 or Class 2 with 1/1 octave band analysis according to IEC 61672.

Operating TangoPLUS with a computer and USB interface

The TangoPlus sound level meter may also beconnected to a computer and operated via the USB interface. In this mode the PC will display the measured values and supply the device with power via the interface. For power supply from 230V mains power outlets a USB wall power supply is included in the delivery.

The Tango-Utilities software enables operation and configuration via PC as well as data transfer. A separate window is provided on the computer screen for easy parameter set-up and transfer of stored values.


IEC 61672: Class 1 sound level meter

IEC 60651: Class 1 sound level meter

IEC 60804: Class 1 sound level meter


Germany – PTB type approval 21.21 / 12.04



Tango-Utilities (included with each meter)
The Tango-Utilities software when combined with a USB interface enables the ability to retrieve and store the measurement data stored on the instrument in csv or similar format.

The meter can also be configured when connected to the PC and stored in the meter for field use.

Technical Specifications

Integrating sound level meter Class 1 or Class 2 according to IEC 60651/60804/61672

1/3 octave analyser Class 1 according to IEC61260

PTB type approval

Measuring range
30 … 140dB (A)

Measurement values

  • Sound pressure level LAF,LAS, LCF
  • Maximum sound level LAFmax, LASmax, LCFmax
  • Continuous sound level LAeq, LCeq
  • Peak level LCpeak
  • Sound dose LAE, 1s, LAE, 8h
  • 3 x peak level exceedance duration LCpeak_exceedance
  • Time/measurement time/exceedance duration (freely selectable)
  • 3x percentiles LAFn (freely selectable)
  • Continuous sound level LCeq-LAeq
  • Level with impulse time weighting LAImax
  • Time/measurement time/exceedence duration

Frequency weightings
A + C

Time weightings
Fast, Slow, Impulse, Peak

Measuring range
25 to 140dB (LAeq)
60 to 143dB (LCpeak)



Colour TFT:

  • Resolution 329 x 240 dots
  • Measured value with 3.5 digits
  • Bar graph, spectra, time history
  • Undercut, overload indicator
  • Measurement time (hh:mm:ss)
  • Battery state of charge
  • Memory status

1/2″ measuring microphone, permanently polarized, removable Class 1

Microphone connector

LEMO7 1B(for micro extension cable)

Audio output connector

3.5mm jack

Automatically to 94dB (104/114dB selectable)

Storage cycles
Individually and freely selectable for all measurement values from 62.5ms … 60min

Storage capacity
32 MB – Up to 194 days depending on selected storage cycle

USB 2.0, printer port, RS232 with the Adapter Tango_RS232-ADAPTER

2 x AA type (1.2 … 1.5V), all battery models may be used

Operating time per battery set
> 40h (per set of two batteries)

Battery storage period
10 years (Lithium battery)

190mm x 70mm x 32mm

250g (incl. batteries)

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