Accelerometers of high overload resistance with integrated electronics for measurement of acceleration in the frequency range 0 to several 100 Hz
B_Sensor[+]
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Features
very high overload resistance
insensitive to interference by magnetic and electric fields
lower cut-off frequency is zero, hence suitable for measuring static acceleration, such as gravity (inclinations) or radial acceleration (centrifugal force)
linear frequency response with little or no resonant peak at upper cut-off frequency
low non-linearity
high signal-to-noise ratio
no measurable hysteresis of signal
hermetically sealed
high long-term stability
small temperature drift
integrated sensor electronics
analog DC or pulse width modulated or frequency modulated output
low power consumption
very short on-transition delay
multiple housing options
Description
The sensors B1, B2 and B3 are capacitive spring-mass accelerometers with integrated electronics. Resonant peaks are minimized by special gas-dynamic damping in the primary transformer.
The sensors are manufactured with an analog DC output. The sensor electronics require only small amounts of power and are in conjunction with the capacitive primary transformer characterized by low error and high long-term stability.
Application
The accelerometers B1, B2 and B3 are used for applications requiring high overload tolerance, high long-term stability, small lower cut-off frequency down to measurement of static acceleration, very short on-transition delay and low power consumption. Typical applications include:
measurements on vehicles, machinery, buildings and plants for process control and error diagnosis
seismic measurements
inclination measurements
safety engineering
dynamic measurement of position and velocity
Technical Specifications
Typ: B1 B2 B3
Measuring range ±3g (ca.±30m/s2) ±10g (ca.±100m/s2) ±50g (ca.±500m/s2)
Resolution <10-3g <5·10-3g <2·10-2g
Frequency range 0...160Hz 0...350Hz 0...550Hz
Linearity deviation <0,5%
Transverse sensitivity <1%
Mechanical overload resistance in direction of measurement 10 000 g (approx. 100 000 m/s2)
Nominal supply voltage (regulated) UbN = 5Volt
Permissible range of supply voltage Ubz = 3V ... 6V
Current drawn at Ub = 5V approx.1mA
Degree of protection IP65
Operating temperature -40°C ... +85°C (125°C optional)
Storage temperature -45°C ... +90°C (125°C optional)
Weight (in metal housing without cable) approx. 23 grams
Standard electrical connection 3 highly flexible, color-coded wires -1mm, length approx. 18 cm (special lengths on request)
Alternative electrical connection 0.5m strong, flexible, shielded cable -2.1mm (special lengths on request)
3 flexible, color-coded wires with Teflon insulation for extended temperature range
Values for analog DC output at UbN = 5 Volt
Sensitivity approx. 140mV/g approx. 30mV/g approx. 7,5mV/g
Temperature drift of sensitivity <+6·10-2 % / K
Temperature drift of zero point <0.1mV/K
Zero offset at Ub=5V 2.5±0.1Volt - generally: 0.5Ub±4%
Output impedance 10 kOhm
*Each sensor will be delivery with individual calibration dates (offset and sensitivity) *on request: PWM-output
