ETMC Technologies - GRAS - Calibration

GRAS Sound & Vibration - Calibration

rugged microphone sets

standard microphone sets

special microphone sets

microphone capsules

simulators, test systems

pistonphones & calibration

intensity pairs & probes

sound power hemisphere

sound calibration

productivity tool!

(multi-function calibrator)

(low frequency calibrator)

Freq: 250 Hz or 1 kHz

Level: 94 dB or 114 dB

Accuracy: Class 1

IEC 60942 (2003-01)

Use: general acoustic work, productivity tool

achieve a 'perfect' calibration every time!

automatically compensates for ambient conditions (temperature, pressure and humidity) + cavity volume changes + partial 'leakage' (via seals)!

Freq: 0.1 - 250 Hz

Level: up to 140 dB

Accuracy: IEC 60318-1 & -2

Use: precision calibration of low

frequency microphones

(intelligent pistonphone)

(high level pistonphone)

Accuracy: Class 0 or Class 1

IEC 60942 (2003-01)

Use: precision calibration

Freq: 250 Hz or 251.2 Hz

Accuracy: Laboratory Stanadard

IEC Standard 60942(2003) LS

Note: temp + pressure compensation

Accuracy: Class 0 or Class 1

IEC 60942 (2003-01)

Use: precision calibration

Type 90AA - audiometer calibration system

(calibration stand)

Type 90CA-S2 - microphone calibration system

Complete Audiometer calibration system

Includes sound level meter, GRAS artifical ears 43AA and 43AF

Convenient platform for testing condenser microphones. Holds a ½” preamplifier (e.g. GRAS 26AG) securely. Recess and column for safely parking electro-static actuators

Calibration of all IEC 61094 standardized 1", ½", ¼", and ⅛" measurement microphones

Level, Frequency, Calibration Certificates, all inclusive system

electrostatic actuators

(½" electrostatic actuator)

(1" electrostatic actuator)

(actuator power supply)

For testing the frequency
response of standard ½" and ¼" microphones (with included adapter)

Connects directly to Type 14AA

For testing the frequency response of standard 1" microphones

Connects directly to Type 14AA

High-voltage, high-gain amplifier and voltage supply for driving electrostatic actuators

The high-voltage output can also be used to drive standard microphones as sound sources

IMPORTANT NOTE:

we aim to have all information accurate and current, please be aware that 'correct' specifications/details are as per GRAS website

(click on the product to view detailed specifications/information)

ETMC Technologies Pty Ltd ( ABN: 14 114 595 836 )

Level 1 | 22-28 Edgeworth David Avenue | Hornsby NSW 2077 | AUSTRALIA

© 2009-2026 ETMC Technologies Pty Ltd (all rights reserved)

+61 2 9555 1225

| contact@etmc.com.au

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