Test systems

Nor1525

Calibration system

for sound level meters, microphones and sound calibrators.

The calibration system Nor1525 is capable of calibrating virtually all types of sound measuring instruments, sound calibrators and microphones in accordance with relevant national and international standards.

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The core of the test system consists of a test unit Nor484 and a PC system 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.

The calibration system Nor1525 may be configured to suit specified applications and consists typically of:

Personal computer.
Actuator chamber with reference microphone and insert voltage preamplifier.
Indoor environmental monitor.
Test unit Nor484 with microphone power supplies, amplifiers and filters.
Reference calibrator or pistonphone.
Support while setting up the system.

Features

Standards

Downloads

Features

Frequency response calibration of microphones using the electrostatic actuator method.
Sensitivity calibration of microphones using the insert voltage method ensures a high degree of accuracy.
Fast and accurate calibration of sound calibrators, pistonphones and associated barometers in accordancewith IEC 60942 (2003 and 2017).
Sound level meter calibration in accordance with IEC 61672-3 (2006 and 2013), DIN 45657:2014, ANSI S1.4(2014).
Fast and accurate calibration of sound measuring instruments using three different interface modes; manual;semi-automated and fully automated.
Test of fractional octave filters in accordance with IEC 61260-3:2016.
Full test report generated.
Built-in self test features (requires voltmeter).
Easy to set up, includes all accessories needed.