Accurate and Stable measurement microphones
At PLACID Instruments, our measurement microphones are engineered to meet the highest standards of accuracy, reliability, and compliance. Whether used for environmental noise monitoring, industrial applications, or acoustic research, our microphones deliver unparalleled performance, adhering to global standards
Constant Current Supply (CCS) Voltage
Our microphones operate seamlessly with industry-standard CCS voltage, ensuring optimal performance and compatibility with a wide range of measurement equipment.
- Designed to function with 4-20 mA CCS-powered devices, enabling easy integration into existing systems.
- The constant current drive provides consistent signal transmission with minimal noise interference, ensuring precise and stable acoustic measurements.
IEPE Compliance
Integrated with IEPE (Integrated Electronics Piezo-Electric) technology, our microphones ensure superior signal integrity and low-noise operation.
- IEPE compliance enables direct compatibility with industry-standard conditioning amplifiers, DAQs, and analyzers.
- Provides high output stability across various temperature and environmental conditions, ideal for demanding measurement environments.
IEC 61672 Compliance
Our microphones comply with IEC 61672 Class 1 and Class 2 standards, ensuring the highest level of accuracy in sound level measurement.
- Guaranteed precision across the entire measurement range.
- Fully calibrated to deliver results consistent with international requirements for sound pressure level measurements in professional and research applications.
- ISO17025 Accredited calibration certificates available
Measurement microphone cartridges
Type
Diameter (Inch)
Sound Field
Frequency (Hz ~ kHz)
Nominal Sensitivity (mV/Pa)
Dynamic Range (dBA)
Polarization Voltage (V)
Height (mm)
IEC 61094 Designation
Measurement microphone sets
Type
Diameter (Inch)
Sound Field
Frequency (Hz ~ kHz)
Nominal Sensitivity (mV/Pa)
Dynamic Range (dBA)
Polarization Voltage (V)
Total length microphone/preamplifier (mm)
IEC 61094 Designation
FREE FIELD SENSOR
The free field sensor actually measures the sound pressure value when the sensor is not in the sound field. At high frequencies, the sensor itself can affect the sound pressure test. This type of sensor has been designed with compensation for its effect on the sound field.
For most sound pressure tests, we choose free-field microphones, which are used in sound level meters, sound power, and radiation studies.
PRESSURE FIELD SENSOR
The pressure field microphone measures the sound pressure on the sensor diaphragm. Practical applications are in closed coupling cavities, or in walls and solid boundaries. In this case, the sensor forms part of the wall and the measured sound pressure is also the value of the sound pressure on the wall.
RANDOM FIELD SENSOR
Random field sensors are used to test sound fields with sound from different sources, like reverberation chambers or other highly reflective fields. The effect of sound from different directions on the sensor depends on how these sound waves are distributed. For a test sensor, its distribution standard has been defined statistically. According to ANSI standards, random field sensors are often used in sound pressure level testing.
PLACID PHT2121
Piezoelectric pressure sensor kits
TYPICAL APPLICATION SCENARIOS • Shock and explosion measurement • High sound pressure level measurement • Measure pressure disturbances in air or fluid
PLACID PMNV2125
low noise microphone kits
TYPICAL APPLICATION SCENARIOS • Sound power measurement • Low sound level measurement • Cab measurement
PLACID PMP20-1
Measurement Microphone Sets
The PMP20-1 is a 1/2” pre-polarized free field microphone, classified per IEC 61094 as WS2F with preamplifier.
PLACID PMP21-1
Measurement Microphone Sets
The PMP21 is a 1/2” externally polarized free-field microphone, classified per IEC 61094 as WS2F with preamplifier.
PLACID PMNP21T
Measurement Microphone Sets
The PLACID PMNP21T Measurement microphone adopts IEPE power supply mode, without polarization voltage, and complies with IEC61672 Type 1.
PLACID PMNP2321
Measurement Microphone Sets
The PMNP2321, TYPICAL APPLICATION SCENARIOS, Suitable for sound fields caused by multiple sound sources or hard reverberation surfaces, such as vehicle interiors.
PLACID PMP40-1A
Measurement Microphone Sets
The PLACID PMP40-1A is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 2 microphone set.
PLACID PMP40-1B
Measurement Microphone Sets
The PLACID PMP40-1B is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 2 microphone set.
PLACID PMP41-1
Measurement Microphone Sets
The PMP41-1 is a ¼” externally polarized free-field microphone with preamplifier, classified per IEC 61094 as WS3F.
PLACID PMP41-1A
Measurement Microphone Sets
The PLACID PMP41-1A is a high-precision condenser measurement microphone set consisting of a microphone and preamplifier manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
PLACID PMP41-1B
Measurement Microphone Sets
The PLACID PMP41-1B is a high-precision condenser measurement microphone set consisting of a microphone and preamplifier manufactured in compliance with the IEC 61094-4 requirements and classified as a class 1 microphone.
PLACID PMNP4T-1
Measurement Microphone Sets
Suitable for precise acoustic test, Suitable for high frequency signal test such as ultrasonic measurement, transient signal test, etc, Suitable for high sound pressure signal test, Built-in TEDS function, Compact structure and small volume
