Strain and Temperature Sensors for Straight Mounting Surfaces: Model DT3716 Series

Columbia Series DT3716 sensors are developed to precisely monitor both strain and temperature on straight mounting surfaces. These sensors have a DIN standard 1000 Ω platinum RTD that delivers precise temperature measurements at the exact site of sensor attachment, in addition to the precision, robustnessand easy installation of the flight-qualified Series DTD2684 sensors.

Similar sensors have been used to monitor possible fatigue damage on aircraft that have logged thousands of hours in the air, as well as high-stress maneuvers and landings. These sensors are also appropriate for normal laboratory applications due to their simplicity and dependability.

When applied to a range of surface materials, the Series DT3716 sensors allow automated temperature compensation of strain outputs. Models are provided as compensation for commonly used materials used in aircraft structural manufacturing, as well as alternative materials as mentioned.

The sensors include Teflon-insulated lead wires with a gauge of 26 AWG to make electrical connections easier. The Columbia Model 5802 Strain Gage Amplifier may additionally power and signal condition the sensors’ 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.

Straight Surface Mounting

Self-Temperature Compensating

Strain andTemperature Outputs

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. ² Installed 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