Test systems

Experience the Norsonic NOR1525 Test Systems — engineered for precise, standards-compliant acoustic measurements. About 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. 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). 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 acousti-cally 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.   Features Frequency response calibration of microphones using the electrostatic actuator (with swept-sine) or acoustical 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 accordance with IEC 60942 (2003 and 2017). Sound level meter calibration in accordance with IEC 61672-3 (2006 and 2013), IEC 60651:1979, IEC 60804:2000, DIN 45657:2014, ANSI S1.4 (2014) and BS 7580:1997. 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. 1260-3:2016. • Full test report generated. Built-in self test features (requires voltmeter). Easy to set up, includes all accessories needed.

Explore the Norsonic NOR1527 Test Systems — engineered for precise, standards-compliant acoustic measurements. Applications ASTM E2611 (4 Pole Transfer Matrix Method) measurement method ASTM E1050 and ISO 10534-2 (Transfer Function Method) measurement method Software / Systems Components Software Determination of sound barrier properties (sound transmission loss, characteristic impedance, characteristic wave number) Determination of sound absorbing properties (sound absorption coefficient, complex reflection coefficient, surface impedance) Determination of dynamic density and dynamic bulk modulus Determination of transfer matrix elements Random incidence absorption estimation models Tube attenuation removal algorithm for deficient absorptive materials Conical adapter correction for transmission loss measurements Determination of intrinsic properties with Johnson-Champoux-Allard-Lafarge (JCAL) material model. (Porosity, Flow Resistivity, Tortuosity, Viscous Characteristic Length, Thermal Characteristic Length­, Static Thermal Permeability­) Amplitude and phase calibration of the microphones Selectable frequency resolution and number of averages ASCII, MS Excel™ export Direct export to MSC Actran for poro-elastic materials definition System Components Analyzer: 102.4 kS/s, 100 dB, 0.8 Hz AC/DC Coupled, 4-Input/1-Output Microphones: GRAS Measurement Microphones Freq range: 10 Hz to 20 kHz Dyn range: 33 dB(A) to 142 dB Sensitivity: 9 mV/Pa Tubes: F-ABS ⌀ 100 mm, 945 mm (L) LF-STL ⌀ 100 mm, 1130 mm (L) HF-ABS ⌀ 30mm, 875 mm (L) HF-STL ⌀ 30 mm, 925 mm (L) Power Amplifier: Built-in, 20W, high quality amplifier, to power the loudspeaker in the impedance tube Speaker: Full Range – 4 ohm Calibrator (Optional): Nor1256 Sound Calibrator Cables: Ultra low noise, BNC to 10-32 cables Features ASTM E2611 (4 Pole Transfer Matrix Method) measurement method ASTM E1050 and ISO 10534-2 (Transfer Function Method) measurement method High-frequency range, 50 – 6400 Hz (100 mm and 30 mm tubes) State of art manufacturing Industry-leading sensors and analyzer Acoustic leakage-proof construction One day free online training included