High Intensity Acoustic Sensors: Models 765M25 & 765M27

The High Intensity Acoustic Sensors (Microphones) Models 765M25 and 765M27 are developed for the monitoring of gas-borne sound in industrial applications. These sensors are compatible with type 316 stainless steel diaphragms and are designed for usage in corrosive settings. Only the electrical connections separate the two designs.

A small 10-32 fused-glass coaxial connector is included in the Model 765M25, whereas the Model 765M27 has a 2-pin connector interface. Both devices provide a fully hermetic seal when paired with their all-welded construction.

Electrically, these devices use piezoceramic sensing components in a balanced and floating design to enable improved rejection of electrical noise observed in many industrial settings. When utilized with a real differential input amplifier, the best results are obtained.

For interface or customized versions of this sensor, contact the manufacturer.

High temperature to +500 Deg F

High sensitivity (1200 pC/psi)

Choice of electrical interface

Electrically isolated

Specifications

Transfer/Electrical

Table 1. Source: Columbia Research Laboratories, Inc.

Environmental

Table 2. Source: Columbia Research Laboratories, Inc.

Physical

Table 3. Source: Columbia Research Laboratories, Inc.

NOTE: ¹ The unit is hermetically sealed when the connector is mated or protected.

Image Credit: Columbia Research Laboratories, Inc.

Accessories Supplied

Standard Calibration Data

Low Noise Cable Assembly (3M) (300 pF) - Model 765M25 Only

Hardwood Storage Case