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Shock Sensor
Circuit Board Mount - CR series

The CR type shock sensor is a simple piezoelectric accelerometer.
It can be mounted to a printed circuit card and the function of detecting vibration is added to the product. There is a variety of models having somewhat different characteristics favoring certain parameters.

Features

bulletVery small, light weight
bulletLow cost
bulletWide frequency range
bulletHermetically sealed
bulletVariety of types

Applications

bulletFor use in watches: Stop watch, Sports timer, turn on light
bulletExercise step counter, calorie meter
bulletSecurity sensor
bulletVibration sensor, part of manufacturing part feeder control
bulletMovement detection of human body, in game equipment or medical equipment
bulletBone conducted speech pickup for earplugs or helmet
bulletVarious switch functions

Specifications:

CR-02BM (size 1.88mm dia X 6mm long)
CR-035BM (size 3.5mm dia X 13.5mm long)
ITEM UNIT CR-02BM CR-035BM
Weight g 0.1 0.7
Charge Sensitivity pC/m/s squared 0.079 1.1
Voltage sensitivity mV/m/s squared 0.46 2.5
Mounted resonant Frequency kHz 10 3
Frequency Response (+/- 3dB) Hz fc ~ 2,000 fc ~ 1,000
Capacitance pF 170 460
Measurement Range m/s squared 5,000 500
Transverse Sensitivity <=% 20 20
Resistance >= Megohm 1,000 1,000
Temperature Range C -10 ~ +70 -10 ~ + 60
Case Material   Nickel Silver Brass

 

CR-03 Series (Size 2.9mm dia. X 8mm long)
ITEM UNITS CR-03 CR-031L CR-03H CR-03SH CR-03BM
Type B-0
Weight g 0.2 0.2 0.2 0.2 0.3
Charge Sensitivity pC/m/s sq. 0.3 0.89 0.22 0.05 10
Voltage Sensitivity mV/m/s sq. 0.87 0.58 0.9 0.23 3.2
Mounted Resonant Frequency kHz. 5 6 5 9 2.9
Frequency Response Hz. fc ~ 1,000 fc ~ 2,000 fc ~ 1,000 fc ~ 3,000 fc ~ 1,000
Capacitance pF 350 650 250 220 320
Measurement Range m/s squared 5,000 1,000 5,000 2,000 200
Transverse Sensitivity <=%

20

Resistance >=Megohm 1,000
Teperature Range C -40 ~ +70 -10 ~ +60 -10 ~ +120 -10 ~ +160 -10 ~ +50
Case Material  

Nickel Silver

Specifications are subject to change without notice.

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Last modified: October 25, 2009