The Endevco® Model 727 is a rugged undamped piezoresistive accelerometer offered in a variety of ranges. It is designed for shock measurements in mobile consumer electronic devices.
The Endevco Model 727 is a family of rugged undamped piezoresistive accelerometers designed for shock measurements in mobile consumer electronic devices. The manual covers technical details for single-axis accelerometers in wax mount configuration, including a summary of available ranges and the benefits of the undamped design for maximizing bandwidth and amplitude linearity.
The document provides critical handling precautions to prevent damage from high-frequency shock inputs and electrostatic discharge (ESD). It details the initial checkout procedure using resistance tests, specific mounting surface preparation requirements, and installation procedures using recommended adhesives like Aremco CrystalbondTM 509. Additionally, it outlines cable handling best practices to prevent failure and noise, as well as electrical considerations regarding excitation voltage and cable length effects on sensitivity.
| Product Type | Undamped piezoresistive accelerometers |
|---|---|
| Application | Shock measurements in mobile consumer electronic devices |
| Calibration Excitation Voltage | 10.000±0.005 Vdc |
| Maximum Excitation Voltage | 12 Vdc |
| Standard Cable Length | 120 inches |
| Recommended Mounting Adhesive | Aremco CrystalbondTM 509 |
| Recommended Silicone RTV | Loctite® item number 37463 |
The accelerometers are calibrated using an excitation voltage of 10.000±0.005 Vdc, unless otherwise specified at the time of order.
The maximum excitation voltage without damage is 12 Vdc.
The 727 accelerometers are calibrated with 120 inches of cable, unless otherwise specified at the time of order.
The mounting surface should have a surface roughness of 32 micro inches rms or better and a surface flatness tolerance of 0.0003".