🔊 Tympanometer — Calibration & Service Log

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⚠ Ensure calibration cavities (0.5 cc and 2.0 cc) are clean and dry before calibration. Take a clear photo of the tympanometer and probe assembly before starting.

Job Details

Before You Start — Required Photo

Damage Assessment
ComponentConditionComments
Probe assembly — probe tip, rubber seal, and housing
Probe cable and connector
Insert ear tips (various sizes)
External housing — screen, buttons, ports
Printer unit (if applicable)
Power cable and supply
Service Checklist
DoneTaskComments
Clean probe tip and check for wax blockage
Inspect rubber seal on probe; replace if cracked or stiff
Check all insert ear tip sizes; discard worn or discoloured tips
Clean screen and housing
Verify probe tone is audible (226 Hz default)
Run test with calibration cavity (0.5 cc and 2 cc)
Check acoustic reflex stimulator output
Review stored results for correct data capture
Calibration Record
StepMethod / TargetResultComments / Measured Value
Probe Tone Frequency Verify 226 Hz probe tone with frequency counter; target ±1 Hz
0.5 cc Cavity Measure equivalent ear-canal volume in 0.5 cc cavity; target 0.5 ± 0.1 cc
2.0 cc Cavity Measure equivalent ear-canal volume in 2.0 cc cavity; target 2.0 ± 0.2 cc
Pressure Range Confirm pressure sweep −400 to +200 daPa without fault
Peak Compliance Measure known cavity; peak compliance within ±10% of expected
Acoustic Reflex Thresholds Verify reflex activator output level at 1000 Hz; ±3 dB tolerance
Final reproducibility check Repeat 0.5 cc measurement three times; results within ±0.05 cc
Post-Service Functionality Check
ResultCheckComments
Tympanograms reproduce correctly on test cavities
Probe seal intact with no air leaks
Pressure sweep completes without alarms
Acoustic reflex thresholds within tolerance
Insert ear tips clean and undamaged
Next calibration due date recorded

After Service — Required Photo

Take the same photo as before to confirm the probe and equipment are clean.

Notes & Sign-off