Appendix - Technical Specification - Welch Allyn MICROTYMP 4 User Manual

Welch Allyn MicroTymp® 4 Tympanometer User Manual
A - T
PPENDIX ECHNICAL
Tympanometry
Instrument type
Analysis performed
Probe tone levels and accuracy
Pressure levels and accuracy
Ear volume measurement range and
accuracy
Sweep speed
Pressure limits (safety cutout)
Number of samples stored
Reflex measurements
Measurement modes
Reflex tone levels and accuracy
Reflex detection threshold and accuracy
DIR 80024157 Ver A
S
PECIFICATION
Meatus compensated tympanometer
Admittance peak level (in ml); Pressure of same;
Gradient (in daPa);
Ear Canal Volume (ECV) @ 200 daPa
226Hz +/- 2%; 85dB SPL +/-2dB over range 0.2ml
to 5ml
+200daPa to -400daPa +/-10daPa or +/-10%
(whichever is larger) over range
0.2ml to 5ml +/- 0.1ml or +/-5% (whichever is
larger) over entire range
Typically 200daPa/sec; dependent on ear/cavity
volume
+600 to -800 daPa
100 per tympanogram
Ipsilateral
500Hz, 1kHz, 2kHz, 4kHz (+/-2%)
Configurable over range 70dB to 100dBHL (4kHz
restricted to 95dBHL) +/-3dB, referenced to 2ml
calibration volume; Compensates for measured
ear volume
0.01ml to 0.5ml +/-0.01ml configurable in 0.01ml
steps
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