This is an instruction manual for Endevco® Model 727 piezoelectric drop test accelerometers. It introduces the features and usage of the product.
The Endevco Model 727 is a family of rugged undamped piezoresistive accelerometers offered in a variety of ranges. It is designed for shock measurements in mobile consumer electronic devices. The manual provides technical details for the single-axis accelerometers in wax mount configuration, including handling precautions and mounting procedures.
| Product Type | Undamped Piezoresistive Accelerometers |
|---|---|
| Application | Shock measurements in mobile consumer electronic devices |
| Mounting Configuration | Wax mount, single axis |
| Calibration Excitation Voltage | 10.000±0.005 Vdc |
| Maximum Excitation Voltage | 12 Vdc |
| Standard Cable Length | 120 inches |
| Input Resistance (Typical) | 650Ω ± 300Ω |
Undamped accelerometers are more susceptible to damage by handling, especially unmounted units. They should be handled by properly grounded technicians at ESD safe work stations to avoid high-frequency impacts that could excite resonance.
Aremco CrystalbondTM 509 is recommended for use up to 60°C. Cyanoacrylate (super glue) is not recommended unless an appropriate solvent is used to weaken the glue joint before removal.
The mounting preparation should allow the cable to be routed perpendicular to the primary shock direction to reduce tensile stress. The cable should be strain relieved close to the accelerometer and encapsulated with silicone RTV.