Aircraft Strain Sensors: Model DT3625 Series

Columbia’s Strain Sensors are more accurate than previous, less accurate counting accelerometer systems when it comes to measuring fatigue loading encountered by aircraft under varied circumstances of speed, weightand mission design.

These sensors enable more precise monitoring of important undercarriage components and surfaces for potential fatigue damage caused by thousands of flying hours, high-stress maneuversand landings. These sensors are also appropriate for normal laboratory applications due to their simplicity and dependability.

The Series DT3625 sensors were created in response to the demand for fatigue measurements in confined locations, and they provide the same accuracy, robustnessand convenience of installation as the flight-qualified Series DTD2684 sensors.

Models for compensating materials typically utilized in aircraft structural production are available. The Columbia Model 5802 Strain Gage Amplifier is used to boost sensor readings and provide strain and temperature outputs.

Note: Exports from the United States are subject to the Export Administration Regulations (EAR) and/or the International Traffic in Arms Regulations (ITAR) authorization procedures.

High Output — Two Active Arms

Self-Temperature Compensating

Ease of Installation

Smallest Size

Specifications

Operational

Table 1. Source: Columbia Research Laboratories, Inc.

Environmental

Table 2. Source: Columbia Research Laboratories, Inc.

Physical

Table 3. Source: Columbia Research Laboratories, Inc.

¹@25 °C ²Installed Gage

Schematic Diagram

Image Credit: Columbia Research Laboratories, Inc.

Typical Installation of Old Style Strain Gages. 1. Bolt or rivet removed from assembly; 2. Dummy gage(s) bonded to “Z Tab” of same material as structure; 3. Active gage bonded to structure under test; 4. “Z Tab” mounted to structure with bond or rivet; 5. Strain gage leads interwired and soldered to junction block; and 6. Entire unit covered with protective material. Image Credit: Columbia Research Laboratories, Inc.

Installation of Columbia Strain Sensor. 1. Strain Sensor bonded to surface under test; 2. Leads connected to wire harness; and 3. Coat sensor and wires with waterproofing material. Image Credit: Columbia Research Laboratories, Inc.

Ordering Information

Table 4. Source: Columbia Research Laboratories, Inc.

Advantages

Twice as much output

A higher level of precision

No compromise on structural integrity

Installation time is reduced

Optimal temperature compensation