Columbia Research Labs, Inc. High Intensity Acoustic Sensor 765M30

The Model 765M30 High Intensity Acoustic Sensor is designed for measuring gas-borne sound in industrial settings, particularly in corrosive environments. It features a type 316 stainless steel diaphragm and an all-welded construction that ensures a hermetic seal. The sensor utilizes piezoceramic sensing elements in a balanced and floating configuration, which enhances electrical noise rejection. An internal accelerometer compensates for the sensor's inherent acceleration sensitivity, making it suitable for dynamic applications. With a charge sensitivity of 2100 ±300 pC/psi and a frequency response ranging from 2 Hz to 8,000 Hz, the 765M30 offers a dynamic range of 0.28 x 10^-4 to 10 psi, with a maximum sound pressure level of 191 dB SPL. It operates effectively within a temperature range of -10 to +500 degrees Fahrenheit and can withstand static pressures up to 3,000 psi. The sensor is also vibration compensated, with a typical vibration sensitivity of 1.0 pC/g. The 765M30 is equipped with an isolated coaxial connector and is supplied with accessories including a low noise cable assembly and a hardwood storage case. This sensor is ideal for applications requiring high sensitivity and reliability in challenging environments.