Pre-Setup Requirements
Understanding the anatomy of your microphone is the first step in proper care. When you unscrew the windscreen, you will see two main components:
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Microphone Body: The base unit attached to the dosimeter [00:27].
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Microphone Cage: The top protective cap that covers the sensitive internal parts [00:35].
Step 1: Inspecting the Microphone Diaphragm
The most critical part of the device is the microphone diaphragm located directly under the cage.
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The Risk: If the cage is removed, the diaphragm becomes exposed. It is incredibly fragile and can be easily wrinkled or torn [00:44].
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Damage Indicators: Look for visible wrinkles or tears. If the diaphragm is damaged, the microphone is considered "bad", it will not calibrate properly, and your noise study data cannot be trusted [01:33].
Step 2: Safe Calibration Practices
Most microphone damage occurs during the calibration step when the unit is inserted into the calibrator adapter.
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The "Twist" Trap: Users often twist or pull the dosimeter while it is in the calibrator. This friction can cause the microphone cage to unscrew and get stuck inside the calibrator [00:58].
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The Critical Check: After calibrating, always verify that the microphone cage is still attached to the dosimeter before you screw the windscreen back on [01:17].
Step 3: Long-Term Maintenance
To ensure your microphones last as long as possible:
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Careful Handling: Always take extra care to ensure the microphone cage stays securely fastened to the dosimeter at all times [02:02].
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Storage: Never store or transport the dosimeter with an exposed diaphragm. If you notice the cage is missing, locate it immediately (it is likely still inside your calibrator adapter) [01:07].
