Norsonic Nor1525 Acoustic & Vibration Calibration System

SKU: Nor1525

About

The Nor1525 Calibration System includes all the components needed to quickly and easily set up a new calibration station or migrate an existing setup to this state-of-the-art system and is capable of calibrating sound level meters, sound calibrators and microphones in accordance with applicable national and international standards.

The core of the test system consists of a test unit Nor484 and a PC system 1 featuring a 24-bit DAQ board and dedicated calibration software. An indoor environmental monitor is delivered with the system, providing the required environmental data in a fast and accurate manner for the calibration reports.

A calibration of a sound level meter is normally divided into two main parts: electrical calibration of the sound measuring instrument and calibration of the microphone. Eventually, an accompanying sound calibrator may be  calibrated and used for an overall system check.

The measured results are automatically logged and used for an automatic generation of a calibration certificate, with appropriate uncertainty statements. If needed, the certificate may be edited by the operator. Automatic generation of reported values minimize the risk for errors generated by the operator.

What's Included

  • Nor484 Test Unit
  • NorCal009 Computer with Integrated ADC/DAC
  • Norsonic Microphone Calibration Stand/Chamber
  • Vaisala PTU303 or Indigo529 Environnemental Monitor
  • Nor1281 Electrostatic Actuator Kit
  • Nor1017 Condenser Microphone Testing Software Module
  • Nor1018 Sound Calibrator and Pistonphone Testing Software Module
  • Nor1019 Sound Level Meter Testing Software Module

Applications

Acoustic Calibrations of:

  • Sound Level Meters
  • Condenser Microphones
  • Sound Calibrators or Pistonphones

Options

  • Operator Training, on-site and virtual

Features

  • Fast and accurate calibration of sound measuring instruments including sound level, level stability, frequency and distortion using predefined test signals
  • Sensitivity calibration of microphones using the insert voltage methods ensures a high degree of accuracy
  • All measurements are securely archived for retrieval and test report generation
  • Frequency response calibration of microphones using electrostatic or acoustical methods
  • Test signals comply with IEC 61672 and DIN 45657 as well as several other sound level meter standards
  • Test of octave and fractional octave filters
  • Self-test program available
  • Periodic Verification of Sound Calibrators
  • Sound pressure level corrected for pressure, temperature and humidity.
  • Short term stability expressed in dB (option).
  • Output frequency in Hz.
  • Total distortion in % (option)


Calibration of Microphones:
The results from the microphone and instrument calibration may be combined to validate conformance with standards for a complete sound level meter.

  • Sensitivity of the microphone as mV/Pa and dB rel.1V/Pa.
  • Frequency response using an electrostatic actuator in the frequency range 20 Hz – 80 kHz.
  • Short test time using sine-sweep techniques for electrostatic actuator measurements. A typical calibration consisting of 3 repeated measurements takes less than 1 minute.


Periodic Verification of Sound Level Meters:
The Periodic Verification of Sound Level Meters can be performed in accordance with several national and international standards. This includes measurements of:

  • Accuracy of input range selector • Level linearity
  • Spectral weighting networks A, B, C, Z, Lin and Flat
  • F, S, and I time constants. Pulse measurement capability
  • RMS detector capability
  • Overload detector
  • Inherent noise using microphone equivalent or acoustically insulated test vessel
  • Integrating averaging functions Leq and SEL
  • Noise dose
  • 1/1 and 1/3 octave band filters (option) The results from the microphone and instrument calibration may be combined to validate conformance with standards for a complete sound level meter.


Uncertainties:
The expanded uncertainties for calibrator and microphone measurements, are calculated as a combination of the uncertainty of the test system and the repeatability of the measurements. This includes the calculation of the standard deviations,  degrees of freedom and coverage factor which are needed to  estimate the 95% expanded uncertainty. A digital and personalized course on uncertainties and how to set up an uncertainty budget can be purchased as option.

Traceability:
Each system is delivered with a certificate of calibration with traceability to SI units. Recalibration can be performed by the user with the built-in self test features (requires voltmeter), or by the manufacturer.

Norsonic Nor1525 Acoustic & Vibration Calibration System

SKU: Nor1525

The Nor1525 Acoustic Calibration System quickly calibrates any type of sound measuring instrument to national and international standards.

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