PCB Piezotronics 378A21 Random Incidence Microphone

The PCB Piezotronics 378A21 Random Incidence Microphone is a perfectly made combination of microphone and preamplifier to measure environmental and cabin noise, along with room acoustics and white goods testing. The 378A21 maintains a flat response for diffuse field applications for accurate measurement even at the highest frequencies.

The 378A21 1/2" microphone also meets various standards for its measurements, including the IEC 61672 Class 1 compliant system. PCB Piezotronics 378A21 random incidence microphones cover a frequency range from 4 Hz to 25 kHz with a maximum amplitude of 150 dB.

Product Info Related Products

Nominal diameter	1/2"
Sensitivity (±2 dB)	-38 dB re 1 V/Pa
Sensitivity	12.6 mV/Pa
Frequency range (±2 dB)	4 to 25,000 Hz
Cartridge thermal noise (dB[A] re 20 μPa)	20
Inherent noise (dB[A] re 20 μPa)	22
Harmonic distortion: 3% (dB re 20 μPa)	162
Distortion limit (dB re 20 μPa)	150

1/2 "-ICP® precision microphone for diffuse field applications
Combination of microphone capsule PCB 377A21 and preamp PCB-426E01
Sensitivity 12.6 mV / PA
Dynamic range > 147 dB
Frequency range 4 to 25,000 Hz
BNC connector

IEC 61672 Class 1
IEC 61094-4

SKU: PCBP-378A21

Vibration Research VR1016 16 Channel Vibration Analyzer

16 simultaneous channels
128kHz sample rate
IEEE 1451.4 TEDS class 1

Fluke 810 Vibration Tester for DC Motors

On-board diagnosis and location of the four most common standard mechanical faults: bearings, looseness, misalignment, unbalance and other (nonstandard faults)
Fault severity scale with four severity levels: Slight, Moderate, Serious, and Extreme
Prioritized repair recommendations

Pruftechnik VIBXPERT II Vibration Analyzer

Portable all-in-one system for effective vibration monitoring
Operational balancing (one and two plane field balancing)
Maximum reliability of vibration data

Vibration Research VR1000 Vibration Analyzer Series

RecorderVIEW software records field acceleration measurements directly to the hard drive
Transient Capture software for waveforms post processing.
Analyzer software (Cross spectrum, Transfer function, and coherence)

Crystal Instruments CoCo-80 Handheld Signal Analyzer

Multiple input channels
High sampling rate
Portable design

Fluke 805 FC Vibration Meter

Innovative sensor design minimizes measurement variations caused by device angle or contact pressure
Consistent data quality at both low and high frequency ranges
Four-level severity scale assesses urgency of problems for overall vibration and bearing condition

Bedrock SM50 STIPA Meter

STIPA
Full STI
Real-time analyzer (RTA) with 1/1, 1/3, 1/6 and 1/12 octave resolution

Larson Davis LXT1-QPR Sound Level Meter

Type 1 Accuracy for Courtroom Traceability
Large backlit display
30 Hours run-time on Energizer® e2® Lithium Batteries

PCB Piezotronics 378B02 Free-Field Microphone

Sensitivity: 50 mV/Pa (± 1.5 dB)
Frequency: 3.75 Hz – 20 kHz (± 2 dB)
Dynamic range: 15.5 dB(A) – 146 dB

Vibration Research VR1004 4 Channel Vibration Analyzer

4 simultaneous channels
128kHz sample rate
IEEE 1451.4 TEDS class 1

Adash A4300 VA3 Pro Vibration Analyzer

Ideal for route measurement.
Long lasting battery.
Low weight 780 g.

Pruftechnik VIBXPERT III Balancer

Well balanced machines have reduced risk of resonance vibration
Intuitive and interactive interface
Simplified, easy-to-use touch screen user interface

Bruel & Kjaer Building Acoustics Partner For HBK 2255 Sound Level Meter

A complete, integrated system
Lightweight and robust equipment
Wireless connectivity

Crystal Instruments Spider-80X Vibration Controller System

High dynamic range
Vibration test control (operation mode)
Compatible with desktop and iPad app versions of EDM (Engineering Data Management) software

Schenck VIBROPORT 80 Vibration Analyzer

Portable vibration analyzer with up to 4 input channels for vibration + speed (triaxial measurements possible)
Modules for FFT, balancing, tracking, acceptance testing, etc.
Easy handling and big color display

Bruel & Kjaer 2270 Sound Level Meter and Vibration Analyzer

Dual-channel measurement instrument
Large, high-resolution touchscreen
High-capacity plug-in memory card data storage

Bently Nevada SCOUT140EX Vibration Data Analyzer

Dual-channel measurements: 6400
4-channel measurements: 3200
25 Hz to 80 kHz

Crystal Instruments Spider-20 and Spider-20E Signal Analyzer & Data Recorder

Frequency Response Function (FRF)
Octave Analysis and Sound Level Meters (SLM)
Time Waveform Recording

IRD Model 258B Series II Vibration Analyzer & Balance Kit

Single, dual, or tri spectrum display with phase vector provides a simplified, yet full interpretation of vibration data
0.16 Hz to 40 kHz, 100 – 25,600 lines of resolution and CPM unit display option
Tri-axial measurement support

Bruel & Kjaer 2250 Sound Level Meter

Single-channel input (microphone, accelerometer or direct signal)
3 Hz-20 kHz broadband linear frequency range with supplied microphone Type 4189
16.6 - 140 dB A-weighted dynamic range with supplied microphone Type 4189

Crystal Instruments CoCo-80X Vibration Data Collector

2-8 inputs with IEPE
Full speed recording
Battery-powered (portable)

Larson Davis SoundTrack LxT Sound Level Meter

Simple Operation – with just one hand!
30 hours operation using AA lithium batteries
Large, bright, high-contrast LCD Screen

Bently Nevada SCOUT240-IS Vibration Analyzer

Portable vibration data collector, 4-channel
Includes industrial phone with S1 Collector app
Phone is rated ATEX Zone 1 / Zone 21 and CSA Class 1 Zone 1

Emerson CSI 2140 Machinery Health Analyzer

24-bit precision
10 Hz - 80 kHz frequency range
Portable, lightweight, thinner model

Bently Nevada Commtest VB8 | Four Channel Vibration Analysis System

Fully automated measurement parameter and alarm setups based on The Proven Method from Technical Associates
ISO 2372 and 10816 standards
4 channel simultaneous recordings