Introduction
The Welch Allyn Audioscope 3
is a fast and reliable device used to screen for hearing loss. With
Audioscope 3 an examiner can screen subjects quickly and accurately.
The screening process is a simple procedure and only takes seconds.
Since the Audioscope 3 has 20, 25, and 40 dB HL levels in a single
unit, patients may be screened with one instrument. The tones are
presented at random intervals so patients can't second-guess their
hearing test. This varied timing provides improved results.
Product
Overview and Description
Audioscope 3 represents the latest in audiometric screening technology
by presenting a unit with three screening levels, varied timing,
and pretone. The screening audiometer tests at 20, 25, and 40 dB
HL levels and the otoscope in the unit uses halogen light and fiber
optics for brilliant view of the tympanic membrane and ear canal
before and during hearing screening. It is suitable for screening
subjects from school children to elderly adults. These tones are
randomly presented for to insure objectivity. The Audioscope 3 also
has built in a 1000 Hz pretone, presented at 20 dB HL above the
screening level, so patients have the opportunity to "practice"
listening before they are actually screened. After the pretone,
the patient is given the easiest tones first, beginning with 1000
Hz. This way the reliability of the patients' responses is enhanced.
Product
Use and Procedure
| 1. |
Seat the
patient in a quiet room. Attach the appropriate AudioSpec
to the Audioscope 3. Instruct the patient as to the method
of response. Retract the pinna.
|
| 2. |
Select the desired
screening level. Insert the Audioscope 3 into the ear canal. (Visually
inspect the tympanic membrane to verify that the canal is not blocked
with wax and to make sure the tip is not pressing against the canal.)
|
| 3. |
Depress
the "Start" button. Observe the tone indicators
and the patient's responses. Screen the opposite ear. Failure
at any frequency necessitates a re-screen. Second failure
may indicate a need for referral.
|
To view the operating
manual for the Audioscope 3 on the Welch Allyn website, click
here.
Features
and Benefits
 |
 |
Combination
otoscope and screening audiometer in one unit. |
|
Uses halogen
light and fiber optics for brilliant view of the tympanic
membrane and ear canal before and during hearing screening. |
|
Offers choice
of 3 screening levels -- 20, 25, and 40 dB HL -- at 500, 1000,
2000, and 4000 Hz to suit all ages. |
|
Has a built-in
1000 Hz pretone so patients can "practice" listening
before being screened. |
|
Tones are
presented at random intervals for objectivity. |
|
Lightweight
and hand-held for portability. |
|
Unique ear-tip
design eliminates the need for headphones. |
|
Rechargeable,
and always ready for use. |
Frequently
Asked Questions
| Q: |
Where
is the serial number found? |
| A: |
Inside the
handle near the battery.
|
| Q: |
:
How can the handle be charged?
|
| A: |
In the Audioscope
charging stand or in the Microtymp charging base.
|
| Q: |
What
is the proper technique to seal the ear ? |
| A: |
Retract
the pinna and insert the unit, with ear tip on and tightly
seal the ear canal.
|
| Q: |
Is
this test OSHA approved?
|
| A: |
No, it is
a screener.
|
| Q: |
What
is the warranty period? |
| A: |
1 year from
the purchase date.
|
| Q: |
Can
the warranty period be extended? |
| A: |
Yes if the
customer sends the handle in yearly for calibration to Welch
Allyn, the warranty can be extended for a maximum of 3 years.
|
| Q: |
Where
is the lamp found? |
| A: |
Inside,
above the battery (it has a spring opening).
|
Technical
Specifications
| Operating
Temperature Range: |
59 degrees to 95 degrees Fahrenheit (15 degrees to 35 degrees
Celsius). All specifications apply over this temperature range.
|
| Frequencies:
|
500,
1000, 2000, and 4000 Hz +/- 3%. |
| Distortion:
|
Less
than 3% total harmonic distortion (as measured at transducer
input). |
| Rise/Fall
Times: |
60
+/- 40 msec. As measured between the -1 and -20 dB points. |
| Tone
Duration: |
1.5
+/- 0.2 sec. |
| Pause
Between Tones: |
Varied:
between 1.0 and 2.0 seconds. |
| Sound
Level: |
Sound levels were established by threshold loudness balance
method to TDH-39 receiver with MX41/AR cushion per ANSI S3.6-
1969 Ref. Thresholds.
These levels were established in an independent study and
are equivalent to standard audiometric headphones. (Bienvenue,
G., Michael, P., Chaffinch, J.- "Reference Threshold
Sound Pressure Levels for the Welch Allyn Audioscope",
Acoustical Society of America, 1984.)
+/- 3dB @500, 1000 and 2000 Hz +/- 4 dB @ 4000 Hz. This corresponds
to the following absolute sound pressure levels when the instrument
is coupled to an occluded ear simulator per ANSI Std. No.
S3.25-1979.
|
| Actual
Sound Level (dB re 20 uPa) |
|
Freq.
(Hz)
|
For
20 dB HL
|
For
25 dB HL
|
For
40 dB HL
|
|
500
|
29.9
|
34.9
|
49.9
|
|
1000
|
27.3
|
32.3
|
47.3
|
|
2000
|
32.7
|
37.7
|
52.7
|
|
4000
|
33.9
|
38.9
|
53.9
|
| Maximum
Permissible Ambient Noise for 20 dB HL Screen |
55
dB A or
48 dB - 500 Hz octave filter
48 dB - 1000 Hz octave filter
48 dB - 2000 Hz octave filter
48 dB - 4000 Hz octave filter
|
| Maximum
Permissible Ambient Noise for 25 dB HL Screen and 40 dB HL
Screen |
60
dB A or
53 dB - 500 Hz octave filter
53 dB - 1000 Hz octave filter
53 dB - 2000 Hz octave filter
53 dB - 4000 Hz octave filter
|
| Lamp:
|
3.5v
Halogen, 20 hour average life |
| Battery:
|
3.5v
nickel cadmium rechargeable- approximately 50 minutes of continuous
operation between recharges. |
Articles / Sales
Brochures / Manuals
To
view the following documents, you need the free Adobe Acrobat Reader. If
you do not already have it, you can download and install it directly from
the Adobe website by clicking on the icon below. These items are available
for view through the Welch Allyn website.
Warranty
1
year warranty extendable to 3 years with annual calibration.
Product Ordering Information
| SH
Catalog # |
Product
Name |
| 53011 |
Welch
Allyn Audioscope 3 |
|
