MN4229 high sound pressure microphone is 1/4 inch prepolarized pressure field microphone that uses IEPE power supply and does not require polarization voltage. The preamplifier housing is made of stainless steel material and is suitable for pressure field environments such as in cavities, near hard reflective surfaces, or installed flush with hard surfaces. The microphone adopts side pressure equalization method, which increases the maximum sound pressure level of the microphone by increasing the membrane tension.

SS2121 measurement microphone is 1/2 inch high-quality prepolarized free field microphone, with preamplifier housing made of stainless steel material, suitable for acoustic testing requirements in various occasions. The microphone kit has obtained explosion-proof certificate issued by the Testing Center of Coal Science and Technology Research Institute Co., Ltd. It is suitable for all explosive gas environments except coal mine gas environments, and its explosion-proof mark is Ex ia IIC T6 Ga.

Piezoelectric pressure sensors are based on the piezoelectric effect, converting the pressure on the sensor surface into electrical signals for pressure measurement. They have wide dynamic range, high temperature resistance, and can measure high-intensity sound pressure in harsh environments, ensuring the accuracy and reliability of data. There are two models in this series, HT2121-120 and HT2121-400, which have different signal output types. The former outputs voltage signals, the latter outputs charge signals, and the latter is more resistant to high temperatures than the former.

MN3221 surface microphone adopts integrated design with built-in preamplifier, which can be applied in wind tunnel noise testing, automotive and aircraft surface noise testing and other scenarios. Its compact structure makes it easy to install on the surface of cars or airplanes.

MN3137 is a special microphone independently developed by our company. This sensor can be installed on the surface of objects with double-sided adhesive, and has the advantages of light weight, small size and wide applicability. It has advantages in automotive NVH testing and aerospace testing. In addition, it is also applied in enclosed space installation, ground array measurement and general noise measurement.

CR series engineering level measurement and recording microphone adopts 48V phantom power supply, measurement microphone cartridge and three core XLR connector. According to the different diameters of the microphone cartridge, CR series recording microphones are divided into three types: 1 inch, 1/2 inch, and 1/4 inch. Each type of microphone has different characteristic parameters such as maximum sound pressure level, sensitivity, frequency response range, and equivalent noise level. With corrosion-resistant metal diaphragm, omnidirectional, and high sensitivity, it is suitable for on-site pickup in concert halls and acoustic instruments, achieving precise, detailed, and natural sound reproduction.

MU2121 USB microphone integrates the microphone, preamplifier, 24 bit A/D, and USB interface. The measurement data is transmitted to PC or mobile end through USB cable, and high-performance noise measurement is carried out in conjunction with testing software.

The FR2122 optical fiber microphone uses a light-emitting diode as the light source and is incident onto the metal diaphragm through the optical fiber. When the sound signal causes the diaphragm to vibrate, the incident light is modulated by the diaphragm vibration and reflected, receiving the reflected light through the fiber optic. After demodulation, it can be restored to the sound signal.

MKY30 is a receiving hydrophone used for mid to low frequency underwater acoustic measurements. The internal sensitive components are made of high-performance piezoelectric ceramic materials, and externally encapsulated with polyurethane. This hydrophone probe can be integrated with a preamplifier inside, which has high sensitivity, low noise, and high resistance to static water pressure. The piezoelectric ceramic sensing element and its internal support structure are sealed in a transonic, lead-free, nitrile rubber shell. The supporting structure is made of metal alloy, which has strong corrosion resistance and excellent anti fouling performance when immersed in seawater.

SPRW21 is a semi permanent microphone developed specifically for outdoor noise measurement. It does not have a built-in calibration device, so it needs to be calibrated periodically with a sound calibrator, which is suitable for short-term outdoor noise measurement. SPRW21 meets IP55 protection grade, 60mm diameter windscreen and internal rain cover can fully protect the microphone to withstand harsh weather conditions such as wind, rain and snow, and prevent damage to the microphone by sand and dust. A single column bird spike can prevent birds from inhabiting and affecting the measurement accuracy.

At present, vibration and noise sensors on the market are mainly tested separately, which takes up relatively large installation space and can easily cause errors in data collection under the same working condition. This integrated acoustic accelerometer can meet the user's requirements for single point synchronous testing of vibration and noise.