PLACID PMP22 Microphone
1/2” Pre-Polarized Free-field Microphone, Class 2
Specifications
Basics
The PLACID PMP22 is a high-precision condenser microphone manufactured in compliance with the IEC 61094-4 requirements and classified as a class 2 microphone.
The PMP22 microphone is optimized for free-field measurements.
As all PLACID microphones, the PMP22 comes with an individual calibration certificate.
Connectivity
The PLACID PMP22 microphone requires a standardized 1/2″ BNC preamplifier that does not need to provide polarization.
Uses
The PMP22 is a robust and stable microphone and is being used as an all-round free-field microphone suitable for laboratory as well as field jobs.
Daily usage
PLACID recommends calibration before and after each measurement with a calibrator.
Individual calibration
All PLACID microphones are being calibrated in a controlled laboratory environment using traceable calibration equipment complying with ISO17025 standards. We recommend that all PLACID microphones are re-calibrated every year to guarantee optimized usage. PLACID Traceable Calibration is performed by our qualified staff and under controlled conditions according to the procedures and standards such as ISO17025.
Quality
All PLACID microphones are made of high-quality materials that will ensure long stability and durability. The microphone diaphragm, body, and protection grid are made of high-grade stainless steel, which makes the microphone resistant to physical damage. PLACID offers 2 years warranty against defective materials and workmanship.
Datasheet PLACID PMP22 | |
Class / type | 2 |
Polarization | 0 V |
Frequency range | 20 Hz ~ 16 kHz (complied with IEC 61672 Class 2 requirements at reference conditions) |
T.H.D | < 3% at 145dB SPL |
Dynamic range | 17 – 148 dB(A) |
Nominal Sensitivity | 40 Mv / Pa |
Temperature range, operation | -20 ~ 60 Celsius |
IEC 61672 Designation | WS2F type II |
Humidity operating Range | 0 to 98 % RH |
Height | 17.6 mm |
Ventilation | Back |
Frequency Response Control
PMP22 uses 3/5 of the tolerances allowed by IEC61672 Class 2 as shown in Figure 1.
Materials
- Housing : Stainless Steel
- Diaphragm : Nickel
- Electret : Teflon on the back plate
- Labeling : Labeling is available on request.
Frequency Response Control
The directivity was measured in anechoic chamber. The typical values are listed in Table 2
Table 2 Directivity in dB of PMP22 (referred to 0°)
Incidences Angles | 1000 Hz | 4000 Hz | 5000 Hz | 8000 Hz | 16000 Hz |
0° | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
45° | 0.0 | -0.2 | -0.3 | -0.5 | -1.4 |
90° | -0.1 | -0.3 | -0.6 | -0.8 | -3.1 |
180° | -0.2 | -1.1 | -2.1 | -1.5 | -3.4 |
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