PLACID PMNP21T (TEDS) Measurement Microphone set
Specifications
The PLACID PMNP21T Measurement microphone adopts IEPE power supply mode, without polarization voltage, and complies with IEC61672 Type 1. It can be connected with IEPE power supply signal conditioner, data collector, sound level meter and other testing equipment for precise acoustic measurement, with good phase consistency, suitable for forming a multi-channel measurement system.
The PLACID PMNP21T measurement microphone includes PLACID PNP21T preamplifier and PLACID PMP21 1/2″ high-quality prepolarized free field microphone capsule. The PLACID PNP21T preamplifier has built-in TEDS function, supporting data acquisition equipment to directly read microphone information, including model, serial number, sensitivity, etc. The shell of the preamplifier is made of stainless steel, which is suitable for acoustic testing requirements in many occasions.
The frequency response index of PLACID PMNP21T is strictly controlled according to the IEC standard. All microphones have passed the rigorous environmental aging test, making them have the advantages of wide frequency range, wide dynamic range, flat frequency response, long time stability, etc.
Standards
IEC 61094-4:1995 Measurement microphones
Specifications for working standard microphones
GB/T 20441.4-2006 Measurement microphones
Specifications for working standard microphones
IEEE 1451.4
Features
Suitable for precise acoustic test
Frequency range covers most test requirements
Built-in TEDS function
Compact structure and small volume
Design
All PLACID ICCP microphone preamplifiers are designed for ¼”, ½” and 1” condenser microphones. The preamplifiers are optimized to have a flat frequency response which will ensure high quality acoustic measurements.
Self Noise
The electrical circuit has especially been designed to ensure a low self-noise level which typically be much lower than the self-noise of the microphone cartridge.
PLACID PMNP21T
The frequency response index of PLACID PMNP21T is strictly controlled according to the IEC standard. All microphones have passed the rigorous environmental aging test, making them have the advantages of wide frequency range, wide dynamic range, flat frequency response, long time stability, etc.
Daily Usage
Suitable for precise acoustic test
Frequency range covers most test requirements
Built-in TEDS function
Compact structure and small volume
| PLACID PMNP21 T | |
| 1/2″ FREE FIELD MICROPHONE | |
| Nominal microphone diameter | 1/2″ |
| Sound field | Free field |
| Microphone type | Prepolarization |
| Polarization voltage | 0 V |
| Dynamic range | 17 to 136 dB |
| Sensitivity (± 2dB) | 50 mV/Pa |
| Sensitivity (± 2dB) | -26 dB ±2dB re 1 V/Pa |
| Frequency Range (±1 dB): | 10 Hz to 8 kHz |
| Frequency Range (±2 dB): | 6.3Hz to 20 kHz |
| Lower Limiting Frequency (-3 dB) | 2 to 4Hz |
| Cartridge Thermal Noise | 16.0 dB(A) |
| Upper Limit of Dynamic Range (3% Distortion): | >146 dB re 20 µPa |
| Maximum Sound Pressure Level(Peak) | 158 dB (peak) |
| TEDS Compliant | Yes |
| Output impedance | ＜110 Ω |
| TEDS | IEEE 1451.4 V1.0 UDID= I27-0-0-0U |
| Temperature Range(Operating) | −20 to +80°C (−22 to +302°F) |
| Temperature Coefficient of Sensitivity | –0.02 dB/C |
| Temperature coefficient (- 10 ~ 50 ℃) | -0.012 dB/℃ |
| Relative humidity range (no condensation) | 0 ~ 98 %RH |
| Relative humidity coefficient (no condensation) | ＜0.1 dB/% |
| Static pressure coefficient | -0.01 dB/kPa |
| Constant Current Excitation | 3.5 mA to 10 mA |
| Output Bias Voltage: | 12 to 16 VDC |
| Output Impedance | <110 Ohm |
| Electrical Connector | BNC Jack |
| Venting | Rear |
| Standard | IEC 61094-4 WS2F |
| Power supply | 2 to 20mA(IEPE) |
| Typical operating current | 4 mA |
| Output interface | BNC |
| Weight | 35 g |
Frequency Response
Dimension
Maintenance
Due to the complex and sensitive physical and acoustic characteristics of the microphone itself, please do not disassemble or modify it by yourself, which may cause irreparable damage, which is not within the warranty scope of the company
For outdoor use, especially in the test scene with wind speed to a certain extent or sand dust, matching windscreen must be used to ensure the measurement accuracy and protect the microphone diaphragm to the greatest extent
During daily use, attention shall be paid to ensure that the liquid will not be sprayed, submerged or dumped on the microphone, otherwise the microphone will be damaged
Please handle with care during use. Don’t beat hard or knock with other hard objects
In case of without test, please do not put the microphone outdoors for a long time, so as not to affect their use effect. Please put the microphone into the packing box for storage in case of lightning weather or long-term non use
Please Click and Download this product datasheet for further information
