INSTRUCTION MANUAL
For Model 35, Isomin
™
Triaxial Accelerometer
IM35, Revision A
IMPORT ANT: To meet all published specifications, the constant current source used to
power this accelerometer must be adjusted to 4.0 ±0.5 mA.
The Endevco Model 35 is a microminiature, piezoelectric triaxial accelerometer with integral electronics.
Because of its extremely small size and physical construction, certain special precautions must be observed
when mounting and removing the accelerometer to avoid damaging the unit.
Adhesive, Solvent and Tools
For use up to 125
°
C:
* Adhesive: Cyanoacrylate (Aron Alpha CE-480, # 201 Rapid Bonding Adhesive is recommended)
* Recommended solvent: Acetone or equivalent hydrocarbon solvent
* Cotton swabs or lint-free tissue
* Toothpicks or equivalent applicators
WARNING:
When Cyanoacrylate is used, do not break cement bond by striking accelerometer or by
using any tool that makes a metal-to-metal contact with the accelerometer. Always
break the bond with the supplied tool after cement has been softened, by twisting or
torquing the accelerometer, stressing the bond in shear.
CAUTION:
Observe precautions recommended by manufacturer of adhesive or solvent.
Mounting Procedure
1. Ensure that mating surfaces are smooth and flat.
2. Remove all traces of grease and oily residue from mating surfaces using cotton swabs and solvent.
3a. With Cyanoacrylate, apply a tiny drop to approximately 1/5 the diameter of the mounting pad (the side
opposite the Z axis).
3b. Spread the cement with toothpick to form thin, uniform layer covering area of contact.
3c. Press down immediately and hold accelerometer firmly in place for 30 seconds while cement sets.
Allow cement to set for at least several minutes for maximum strength.
