INSTRUCTION MANUAL
For Model 25B
,
Isomin™ Accelerometer
IM25B, Revision A
IMPORTANT: 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 25B is a microminiature, piezoelectric 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.
Accessories, Adhesive, Solvent and Tools
For use at room temperature:
* Petro wax or bees wax
For use up to 60°C:
* All-temperature glue stick and hot-melt glue gun
* Solvent: Follow the recommendations from glue stick manufacturers
For use up to 125°C:
* Adhesive: Cyanoacrylate (Loctite Super Bonder 430 Adhesive is recommended)
* Solvent: Nitromethane base (Loctite X-NMS Solvent 768 is recommended)
Alternatives: Acetone, Chlorothene (Trichloroethane) or equivalent hydrocarbon solvent
* Cotton swabs or lint-free tissue
* Toothpicks or equivalent applicators
Endevco P/N 31849 Adhesive Kit contains most of the required items for mounting transducer. Contact
the factory for details.
CAUTION:
Observe precautions recommended by manufacturer of adhesive or solvent.
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.