Impedance Audiometer (Tympanometer) Cat. MAI-34 Maico

Impedance Meter (Tympanometer) Cat. MAI-34 Maico

Easy-to-use device, meaning its operation is simple and easy to understand. And because all functions are software-controlled, upgrading the instrument later to new and expanded measurement functions will be simple and economical.

The MI 34 is an automatic instrument designed for tympanometric testing. Tests performed in tympanometric test mode measure middle ear mobility, ipsilateral acoustic reflex, contralateral reflex, reflex decay, and Eustachian tube function. Test results are displayed on the LCD (Liquid Crystal Display) screen on the front panel and can be printed.
The design of the MI 34 allows for quick and reliable measurements. This equipment is designed for initial middle ear function tests.
Interface with personal computer:
A serial RS232 interface is built into the instrument for data transfer to a connected computer.

Features:

• Tympanometry and IPSI acoustic reflex
• Contralateral reflex, reflex decay, and Eustachian tube function
• Fully automatic with immediate on-screen results
• Built-in printer for printing
• Results at the touch of a button
• Reflex decay test.
• Eustachian tube function test
• Graphical reflex decay
• With RS-232 interface for PC
• Portable, only weighs 10 lb.

Technical data
Tympanometry mode:

• Probe frequency . . .226 Hz +/-2% typical
• Probe intensity . . . . .85 dB SPL in a 2cc cavity
• Pressure range . . . . .+200 to -400 daPa
• Volume range . . . . . .0.2 to 5.0 ml
• Accuracy . . . . . . . . . . . . . . . .+/-10 or 10 daPa, whichever is greater
• Sweep rate . . . . . . . . . .Variable, 550 daPa/sec. max.
• Test time . . . . . . . . .Less than 3 seconds typical
• Compliance ranges . . . . . . . . .0-3 ml

REFLEX MODE

• IPSI Frequencies: 500, 1000, 2000, 4000 Hz +/-2%
• IPSI Intensities: 70 - 105 dB HL (105 dB HL max. at 4000 Hz), on/off ratio greater than 70 dB, rise/fall time 10 ms typical
• CONTRA Intensities: 60 -110 dB HL (60-105 dB HL 100 max. at 4000 Hz)
• Pressure: Automatically fixed to the peak value of the tympanogram

Reflex decay mode:

• Reflex frequencies: 500, 1000, 2000, 4000 Hz +/-2%.
• CONTRA Intensities: 70 - 120 dB HL (115 dB HL max. at 4000 Hz).
• Pressure: Automatically fixed to the peak value of the tympanogram.
• Test time: 13 seconds, 10 seconds of automatic tone present.

Eustachian tube function mode

• Pressure range: +300 to -400 daPa (mm H2O).
• Accuracy: +/-10% or +/-10 daPa, whichever is greater.

Display:

• The graphic LCD display shows the tympanogram graph, peak compliance, peak pressure, ear canal volume, gradient, reflex, graph, and conclusion.
• Dimensions: 15 inches wide x 4 inches high x 13 inches deep (38.1 cm wide x 10.2 cm high x 33 cm deep).
• Weight: 10 lb/4.5 kg.
• Voltage: 117/234 VAC, self-adjusting.

Accessories:

• Probe calibrator
• Test probe
• Case of 24 ear tips for testing.
• Plastic cover.
• AC power cable.
• Audio link CD for PC.
• Compatible with Noah 3.0 software.
• 2 rolls of thermal paper model Na-610.
• User manual.
• Factory calibration certificate.
• Noah 3.6" software.