The IM7264C is a low mass, miniature piezoresistive accelerometer manufactured by Endevco. This document is the instruction manual for the IM7264C, and it describes the use, precautions and inspection methods of the accelerometer.
The Endevco IM7264C is a low mass, miniature piezoresistive accelerometer. The document outlines the materials required for mounting, including specific Endevco part numbers for screws, washers, and Allen wrenches. It emphasizes precautions such as avoiding drops, keeping the protective sleeve on until installation, and strictly adhering to the specified mounting torque of 2.6 in-lbf (0.29 N-m) to prevent damage.
The manual details a three-step check-out procedure to verify proper operation upon receipt: an impedance test, an insulation resistance test (minimum 100 megohms), and a zero measurand output test. It also covers proper mounting techniques, including surface preparation, lubrication of screws, and cable management, as well as guidelines for recalibration intervals and cleaning.
| Mounting Torque (Recommended) | 2.6 in-lbf (0.29 N-m) |
|---|---|
| Mounting Torque (Maximum) | 3.0 in-lbf (0.34 N-m) |
| Insulation Resistance | 100 megohms minimum |
| Impedance Tolerance | ±25% of calibrated value |
| Recommended Surface Roughness | 32 microinch rms |
The recommended mounting torque is 2.6 in-lbf (0.29 N-m), with a maximum of 3.0 in-lbf (0.34 N-m).
Sensitivity and ZMO calibration should be performed at 6 to 12 month intervals, depending on usage.
All readings for insulation resistance should be at least 100 megohms.