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CONTACT MICROPHONE CM-01B

CONTACT MICROPHONE CM-01B

CONTACT MICROPHONE CM-01B

Product catalog summary
Contact Microphone CM-01B Overview
The CM-01B is a high-sensitivity contact microphone utilizing PVDF piezo film technology. It is designed to minimize external acoustic noise while providing high sensitivity to vibrations, making it ideal for detecting body sounds. Key features include broad bandwidth, excellent impact resistance, lightweight design, and cost-effectiveness.

Specifications
  • High Sensitivity
  • Robust Construction
  • Low Noise
  • Piezo Film Technology
  • Shielded Cable

Applications
  • Electronic Stethoscope
  • Bone-conducted Sound Pickup
  • General Purpose Contact Microphone
  • Vibration/Impact Sensing

Performance Specifications
  • Sensitivity: 40 V/mm
  • Frequency Range: 8 Hz to 2.2 kHz
  • Resonance Frequency: 5 kHz
  • Spring Constant: 20 N/m
  • Electronic Noise: 1 mV pk-pk
  • Supply Voltage: 4-30 V-DC
  • Supply Current: 0.1 mA
  • Operating Temperature: +5 to +60°C
  • Storage Temperature: -20 to +85°C

Frequency Response
The typical frequency response curve indicates the device's sensitivity across a range of frequencies when subjected to piston-like displacement.

Internal Schematic
The internal schematic includes components such as capacitors (C1, C2 = 0.1 µF) and resistors (R1, R2 = 300 KΩ, R3 = 10 KΩ, R4 = 100 MΩ). The shield (braid) is grounded, with red and yellow wires for VCC (+5 V) and Vout, respectively.

Ordering Information
Model No: CM-01B, Part No: 1007079-1

Contact Information
For inquiries, contact Measurement Specialties, Inc., a TE Connectivity company, via phone or email for North America, Europe, and Asia.
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Catalog excerpts

CONTACT MICROPHONE CM-01B-1

High Sensitivity Robust Low Noise Piezo Film Technology Shielded Cable The CM-01B Contact Microphone uses sensitive but robust PVDF piezo film combined with a low-noise electronic preamplifier to provide a unique sound or vibration pick-up with buffered output. The design minimizes external acoustic noise while offering extremely high sensitivity to vibration applied to the central rubber pad. The CM-01B is ideal for detecting body sounds. Broad Bandwidth High Sensitivity Excellent Impact Resistance Lightweight Low Cost Electronic Stethoscope Bone-conducted Sound Pickup General Purpose Contact Microphone Vibration/Impact

 Open the catalog to page 1
CONTACT MICROPHONE CM-01B-2

PERFORMANCE SPECIFICATIONS CHARACTERISTICS Sensitivity Lower Limiting Frequency (-3 dB) Upper Limiting Frequency (+3 dB) Resonance Frequency Spring Constant Electronic Noise Supply Voltage Supply Current Operating Temperature Storage Temperature Units V/mm Hz kHz kHz N/m mV pk-pk V-DC mA -C -C TYPICAL FREQUENCY RESPONSE Frequency (Hz) The above plot shows a typical frequency response curve for a device clamped below and subjected to piston-like displacement to the face of the rubber sensing pad.

 Open the catalog to page 2
CONTACT MICROPHONE CM-01B-3

0 IN4148 C2 = 0.1 |jF R2 = 300 KQ 10 KQ ORDERING INFORMATION Model No. Part No. Shield (braid): Red wire: Yellow wire: R4 = 100 MQ NORTH AMERICA Measurement Specialties, Inc., a TE Connectivity Company Tel: +1-800-522-6752 Email: [email protected] EUROPE MEAS Deutschland GmbH a TE Connectivity Company Tel: +49-800-440-5100 Email: [email protected] ASIA Measurement Specialties (China), Ltd., a TE Connectivity Company Tel: +86 0400-820-6015 Email: [email protected] Measurement Specialties, Inc., a TE Connectivity company. Measurement Specialties, TE Connectivity, TE Connectivity...

 Open the catalog to page 3

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.