
Interacoustics
AT235 Tympanometer & Screening Audiometer
Fast, reliable tympanometry with screening audiometry built in.
A combined impedance audiometer and screening audiometer suited to both diagnostic and screening work. Fast, easy to operate, with accurate automatic middle-ear measurements and optional pure-tone screening — an efficient choice for ENT, audiology, hospitals and primary-care clinics.
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Key Features
- All-in-one device — middle-ear function + quick hearing screen in one unit
- Standard 226 Hz probe tone, with optional 1000 Hz for infants
- Measures eardrum movement across a full pressure range with automatic adjustable pump
- Wide ear-canal volume range (0.1 – 8.0 ml) — suitable for children and adults
- Detailed diagnostic and fast screening modes; automatic ear-side detection
- Acoustic reflex testing (ipsi & contra) at the four key frequencies
- Noise-based stimuli + reflex strength and reflex fatigue (decay) tests
- Automatic reflex threshold detection up to a strong 100 dB stimulus
- Optional built-in screening audiometer (250 Hz – 8 kHz, manual or automatic)
- Compatible with standard headphones or in-ear tips
- Clear on-screen graphics with optional built-in printer for instant results
- PC connectivity — records to OtoAccess® and NOAH software
- Mains power with a safe, medical-grade supply
- Meets international electrical-safety and audiometer standards (IEC 60601-1 and 60645)
Technical Specifications
ParameterAT235
Probe tone226 Hz standard · 1000 Hz optional (infants)
Pressure rangeFull automatic sweep, adjustable pump
Ear canal volume0.1 – 8.0 ml (children & adults)
ModesDiagnostic + Screening
Reflex testsIpsi & contra · 4 frequencies · decay
Reflex thresholdAutomatic, up to 100 dB stimulus
AudiometerOptional · 250 Hz – 8 kHz · manual or auto
TransducersStandard headphones or in-ear tips
DisplayOn-screen graphics · optional built-in printer
ConnectivityPC · OtoAccess® · NOAH
PowerMains, medical-grade supply
ComplianceIEC 60601-1 · IEC 60645
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