Laboratory Calibration

Audiometric

Our laboratory audiometric calibration system is based around an ADACS system. This system can calibrate any type of audiometer from a hand-held screening device to a fully featured clinical instrument. A detailed calibration certificate is provided which tabulates all of the measurements made - both before and after any adjustments. The parameters measured are: Frequency, Sound Pressure Level, Force Level, Narrow-Band Masking Level, Distortion and Attenuator Linearity.

Tympanometers are calibrated in a similar manner to audiometers with additional measurements made on the pressure and compliance sections of the instrument.

All types of Hearing Instrument Test boxes can be calibrated and the parameters tested are: Frequency, Sound Pressure Level, Distortion and Linearity.

Evoked Response Audiometers are calibrated with reference to the manufacturer’s specifications. The pure tone section of the instrument is calibrated in a similar manner to an audiometer while the click amplitude is measured as a peak equivalent SPL.

Oto-Acoustic Emission equipment is calibrated to the manufacturer’s specifications. This will be based on the calibration of the probe transducers utilising a probe and measurement coupler configuration specified by the manufacturer.



Acoustic

Our acoustical calibration rig is a GPIB-controlled system which includes Advantest and Bruel & Kjaer spectrum analysers, 0.25”, 0.5” and 1” microphones, sound level calibrators, bench DMMs and a sound-proofed test chamber.

With this system we offer calibration of sound level meters, filter sets, dosemeters and sound level calibrators.

We can also calibrate various acoustical equipment such as pre-amps, microphones, measuring amplifiers etc.

Our experience in audiometric calibration allows us to offer calibration of telphonometric devices such as artificial ears and artificial mouths.


Vibration

Our vibration calibration rig is based around a Bruel & Kjaer 4801/4812 vibration exciter and Endevco reference accelerometer. The system has an acceleration capability up to 50g and a maximum frequency of 20 kHz.

We offer calibration of accelerometers, vibration meters and vibration calibrators.


Pricing

Please contact David Canning at the Technical Centre for laboratory calibration pricing. It is helpful if you can provide accurate details of your equipment such as: manufacturer, model and serial number.

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