very high overload resistance
insensitive to interference by magnetic and electric fields
multiple housing opti***
light weight
linear frequency resp***e with little or no resonant peak at upper cut-off frequency
low non-linearity
***all lower cut-off frequency
high signal-to-noise ratio
hermetically sealed
low transverse sensitivity
high long-term stability
integrated sensor electronics
low output impedance
long connection lines possible
Description
The dynamic accelerometers BDK3, BDK10, and BDK100 are capacitive spring-mass accelerometers with integrated sensor electronics. Resonant peaks are minimized by dynamic gas damping in the primary transformer.
The sensor electronics require only minimal power and are in conjunction with the capacitive primary transformer characterized by low error and high long-term stability.
Application
The accelerometers BDK3, BDK10, and BDK100 are used for applicati*** requiring high overload resistance, high long-term stability, ***all lower cut-off frequency, light weight and low power c***umption. Typical applicati*** include:
measurements on vehicles, machinery, buildings and plants for process control and error diagnosis
sei***ic measurements
vibration measurements
safety engineering
dynamic measurement of position and velocity
Technical Specificati***
Type BDK3 BDK10 BDK100
Measuring range &plu***n;3g (ca.&plu***n;30m/s2) &plu***n;10g (ca.&plu***n;100m/s2) &plu***n;100g (ca.&plu***n;1000m/s2)
Resolution <10-3g <5·10-3g <5·10-2g
Frequency range 1....300Hz 1....800Hz 1....1500Hz
Sensitivity at Ub = 5Volt appr.150mV/g appr.60mV/g appr.15mV/g
Temperature drift of sensitivity <+6·10-2 % / K
Temperature drift of zero point <0.1mV/K
Zero offset (2.5&plu***n;0.1)Volt - generally: 0.5Ub&plu***n;4%
Output impedance approx. 100 Ohm
Linearity deviation <1%
Transverse sensitivity <1%
Mechanical overload resistance in direction of measurement approx.10 000g (appr.100 000m/s2) !
Nominal supply voltage (regulated) UbN = 5Volt
Permissible supply voltage range Ubz=2V ... 16V
Current drawn at Ub = 5V approx. 2mA
Degree of protection IP65
Operating temperature -40°C ... +85°C
Storage temperature -45°C ... +90°C
Weight in stainless steel housing with thread without cable approx. 17Gramm
Weight in ***all housing without cable approx. 7Gramm
Standard electrical connection 3 highly flexible, color-coded wires ?1mm length approx.18 cm (special lengths on request)
Alternative electrical connection for sensors in stainless steel housing 0.5m strong, flexible, shielded cable, 2 wires + shield, ?2.1mm (special lengths on request)
on request: Special design for very low power c***umtion up to 30μA
NB3
Inclinometer for inclination measurement in the range of &plu***n;10 degrees
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Features
linear output characteristics
high measurement accuracy
high long-term stability
hysteresis free output signal
minimal zero point drift
integrated sensor electronics
low power c***umption
***all housing
light weight
different output signal opti***
no interference by ambient electromagnetic fields
minimal transverse sensitivity over whole measuring range!
hermetically sealed
Description
The inclinometer NB3 is a static accelerometer preferably employed for measuring ***all inclinati***.
The sensor's primary transformer c***ists of a capacitive spring-mass system with gas-dynamic damping.
The sensor is manufactured either with an analog DC or a pulse width modulated output. The integrated sensor electronics require only minimal power and are in conjunction with the capacitive primary transformer characterized by high accuracy and long-term stability.
Application
The NB3 is suitable for applicati*** requiring a ***all, light sensor for measurement of relatively ***all inclination angles.
Typical areas of application include measuring instruments and inspection systems, vehicles, automation and safety engineering, scientific devices, medical and communicati*** equipment as well as leveling systems.
Technical Specificati***
NB3
Dimensi*** see dimension drawing
Measuring range &plu***n;10 degrees
Display range &plu***n;20 degrees
Resolution <0,001degrees
Linearity deviation <0,2% F.S.
Transverse sensitivity negligible
Settling time approx. 0.3 seconds (shorter times optional)
Supply voltage (regulated) Ub 5V
Permissible supply voltage range 3V ... 6V
Current drawn at Ub=5V approx. 1mA
Degree of protection IP65
Operating temperature -40 bis +85°C (125°C optional)
Storage temperature -45 bis +90°C (125°C optional)
Weight without cable approx. 25 grams
Electrical connection 3 highly flexible wires ?approx.1mm, length 18cm
optional:
0,5m shielded cable ?2,1mm
3 flexible Teflon-coated wires
Values for analog DC output at UbN=5 Volt
Sensitivity approx. 17mV/degree
Temperature drift of sensitivity < +1·10-2%/K
Temperature drift of zero point < &plu***n;0,025mV/K
Zero offset at Ub=5V 2,5&plu***n;0,1Volt - generally: 0,5Ub&plu***n;4%
Output impedance
10 kOhm
on request: PWM-output
NA2-05, NA2-10, NA3-30, NA4-45, NA4-70
Inclinometers with integrated 0...5 Volt signal conditioner for inclination measurement
in the ranges of &plu***n;5, &plu***n;10, &plu***n;30, &plu***n;45, &plu***n;70 degrees
[+]
SEIKA front page
print version (pdf)
Features
***all size light weight
linear output resp***e
high measurement accuracy
***all zero drift
***all cross sensitivity
high long term stability - virtually infinite lifespan
hysteresis-free output signal
integrated sensor electronics including signal conditioner and low-pass filter
no data memory with memory loss
temperature compensated, conditioned 0...5V output signal
highly stable internal voltage regulation
optional 5 Volt reference voltage output
unconditioned operating voltage between 9V and 30V
low power c***umption
protection against reverse supply voltage polarity
EMC certified CE certified
no interference by surrounding electromagnetic fields
shockproof as without moving mechanical parts
hermetically sealed
sensor electrically isolated from point of measurement by high quality plastic housing – no ground connection
zero point adjustable through 360° using clamping ring
Description