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Dynamic Pressure Sensor - P-308-C

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• High Intensity Acoustic Microphone
• Operational Range 100 to 190 dB
• Vibration Compensated
• Charge Sensitivity: 4 pC rms Min.
• Pressure Range: 100 to 190 dB
• Temperature Range: -100 to +300 Deg F (-73 to +150 Deg C)
• Humidity: 0 to 100% R.H.

Model Number: P-308-C
Data Sheet:

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Product Specification

P-308-C Dynamic Pressure Sensor Description

The Columbia Model P-308-C Piezoelectric Microphone is designed to measure a wide range of varying high intensity sound pressure levels from 110 dB to 190 dB. Incorporating a unique “opposing” seismic system design, the unit is effectively insensitive to external vibration environments. This microphone offers unusually high charge sensitivity, wide frequency response and excellent linearity.

The Model P-308-C features a compact design weighing less than 20 grams. The advanced stainless steel case design assures exceptional mechanical isolation and rugged construction for use under the most severe environmental conditions.

P-308-C Dynamic Pressure Sensor Features
• High Intensity Acoustic Microphone
• Operational Range 100 To 190 dB
• Vibration Compensated

P-308-C Dynamic Pressure Sensor Specifications

Transfer / Electrical
Charge Sensitivity	4 pC rms Min.
Pressure Range	100 to 190 dB
Pressure Overload (without damage)	30 psi
Frequency Linearity	+/-2 dB, 5 to 6,000 Hz +/-3 dB. 6,000 to 10,000 Hz
Resonant Frequency	27 KHz Min.
Amplitude Linearity	+/-0.5 dB of Full Scale SPL over Dynamic Range
Capacitance	3600 pF (Nominal)
Output Resistance	1 x 10⁴ Megohms
Grounding	Isolated
Environmental
Temperature Range	-100 to +300 Deg F (-73 to +150 Deg C)
Humidity¹	0 to 100% R.H.
Vibration Limit	100 g Max.
Shock Limit	100 g Max
Physical
Size	0.740 In. Dia. x 0.770 In. H (19.0 mm Dia x 19.6 mm H)
Weight	0.67 Oz (19 Gm)
Material Body & Diaphragm	Type 316 Stainless Steel
Electrical Interface	#10-32 Coaxial Connector
Mounting	Clamps Supplied for Rigid Mounting