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Welch Allyn 93650 Microtymp 3 Portable Set w/ Printer & Charger

Ground Delivery

Availability: Usually Ships in 10 business days via Ground Delivery.

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SKU: CESS-91559-00

Unit: EA


The Welch Allyn 93650 Microtymp 3 Portable Set w/ Printer & Charger provides Portable, Reliable, Cost-Effective Tympanometry for Patients of All Ages.

Get accurate patient data for any age with the Welch Allyn MicroTymp 3 Tympanometer. Offers speed, accuracy and ease of use combined to give you the perfect instrument for your practice. Appropriately diagnosing otitis media is now made easier with the MicroTymp3. Whether fluid in the ear is visible or not, the MicroTymp3 produces an accurate, objective measurement of middle ear status for patients of all ages—including infants less than six months.

In addition to otitis media, the MicroTymp3 also helps detect these other pathologies:

  • Perforated tympanic membrane
  • Patent tympanostomy
  • Ossicular disruption
  • Otosclerosis
  • Tympanosclerosis
  • Cholesteatoma


  • 1,000 Hz quick-interpretation mode fortesting infants under the age of 6 months
  • Test in seconds—ideal for young or uncooperative patients
  • Convenient cards and sleeve attach to charging base for easy documentation of 1,000 Hz results
  • Foreground and background contrast LCD screen for easy viewing
  • Three optional forms of information available for 226 Hz—tympanogram, numerical and interpretive data—making it flexible for your needs
  • Compare middle ear function measurements side-by-side with easy-to-use graphs (226 Hz only)
  • Tests print automatically or on-demand and can produce multiple copies for parent consultation or referral (for 226 Hz only—printing not available for 1,000 Hz)
  • Enhanced, Field Upgradeable Software

Technical Specifications:

Probe Tone

  • 226 Hz Amplitude: 85 ±3 dB SPL
  • 1,000 Hz Amplitude: 83 ±3 dB SPL
  • Frequency Accuracy: ±2%
  • Total Harmonic Distortion: 3% Maximum
  • Signal Type: Continuous Sinusoid
  • All specifications measured in an ANSI HA-1 (2.0 cc) coupler.

Pressure Measurement System

  • Direction of sweep:  positive to negative pressure
  • Sweep Rate: 400 daPa/sec average during data acquisition period
  • Range: +200 to -400 daPa
  • Display Resolution: 20 daPa
  • Accuracy: ±15% or ±10 daPa, whichever is greater
  • Compensation: Auto-zero every test cycle

Admittance Measurement System

226 Hz Mode:

  • Range: 0.2 to 4.0 mmho total
  • 0.0 to 1.5 mmho for Ya
  • 0.2 to 2.5 cc for +200 Vea
  • Accuracy: ±0.1 mmho or ±5%, whichever is greater
  • Positive tail compensation

1,000 Hz Mode:

  • Range: 0.9 to 16.6 mmho total
  • 0.0 to 6.5 mmho for Ya*
  • 0.2 to 2.5 cc for +200 Vea
  • Accuracy: ±0.4 mmho or ±5%, whichever is greater
  • Negative tail compensation
  • *for ear canal volumes ≤2.0 cc

Display Resolution:

  • 0.1 mmho for Ya
  • 0.2 cc for +200 Vea


  • Handle: 0.61 lb/0.28 kg
  • Printer/Charger: 3.98 lb/1.81 kg


  • The MicroTymp®
  • 3 complies with the following standards based
  • on the most recent revision available at the time of design:
  • UL 60601-1
  • CAN/CSA C22.2 No. 601.1-M90
  • EN/IEC 60601-1
  • EN/IEC 60601-1-2
  • ANSI S3.39 – ANSI Type 4 instrument
  • IEC 60645-5 – IEC Type 3 Instrument




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Features & Specifications

Welch Allyn
Unit of Measure (UOM)
Shipping Method
Ground Delivery
Product Condition
charging stand and printer
Product Page ID: CESS-91559-00