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BDK系列


介绍: DescriptionBDK sensors are dynamic accelerometers that are capacitive spring-mass based, with incorporated sensor electronics. Resonance peaks are minimised by means of a special gas-dynamic damping i…

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Description

 

BDK sensors are dynamic accelerometers that are capacitive spring-mass based, with incorporated sensor electronics. Resonance peaks are minimised by means of a special gas-dynamic damping in the primary transformer . With very low power consumption, these sensors are characterised by very low drift (or error) and long-term stability.

 

Applications

 

These accelerometers are used for applications requiring high overload tolerance, high long-term stability, small lower cut-off frequency, light weight and low power consumption.

 

Typical applications include:

 

 measurements on vehicles, machinery, buildings, and plants for process control and error diagnosis

 

 seismic measurements

 

 vibration measurements

 

 safety engineering

 

 dynamic measurement of position & velocity


 

Features

 

 Compact housing, less than 1” diameter

 

 Light weight

 

 Very high overload resistance

 

 Insensitive to interference by magnetic and electric fields

 

 Low cut-off frequency

 

 Linear frequency response with little or no resonant peak at upper cut-off frequency

 

 Low non-linearity

 

 High signal-to-noise ratio

 

 Very low cross-axis sensitivity

 

 Hermetically sealed

 

 High long-term stability

 

 Small temperature drift

 

 Integrated sensor electronics

 

 Long connection leads available  Multiple housing options



 








MECHANICAL CHARACTERISTICS













Housing



Type 1


Stainl ess St eel, M6 Mounting St ud
















Type 2


Nickel Plated Brass















Dimensions



Type 1


Ø 0.87” (Ø 22mm) X 0.39” (10mm) h






Type 2


Ø 0.80” (Ø 20mm) X 0.30” (7,5mm) h




















Weight



Type 1


Approx . 0. 60 ounces (17 gr ams)






Type 2


Approx . 0. 25 ounces (7 grams)











Protecti on Degree



IP65















Mounti ng



See “Figure 1”






Mounti ng Pl ane



See “Figure 1”






El ectrical



Standard


3 highly flexibl e, c olor-coded wires  Ø 0.04” (Ø 1. 0mm) x 7.0” (18cm)













Connection



Optional


Type 1 H ousing: Shiel ded cabl e Ø 0.083” (Ø 2.1mm) x 1. 65’ (0. 5m)









Operati ng T emperature


-40°F to +185°F  (-40°

to + 85°C )












Storage temper ature



-49°F to +194°F  (-45°

to + 90°C )



































 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

 


MODEL


BDK3




BDK10

BDK100













Measuring Range

±3g (Approx. ±30m/s2)


±10g (Approx. ±100m/s2)

±100g (Appr ox. ±1000m/s2)













Res olution


<10-3g




<5*10-3g

<5*10-2g


Frequency Range

1…300Hz




1…800Hz

1…1500Hz


Max. N on-linearity





<0.5%















Cross Axis Sensitivity





<1%















Mec hanic al Overloadi ng in



10, 000g (Approx. 100,000m/s2)




Measuring Direction










Power Supply UbN (Regulated)





5 Volt




Min ... Max. Supply Ubz





2 ... 16 Volt




Current Consumpti on Ub=5Volt

BD: Approx. 250uA ( optional 30uA), BDK: Approx. 2mA




ANALOG VOLTAGE OUTPUT MODEL AT  UBN=5VOLT




Sensitivity


Approx . 150mV/ g




Approx . 60mV/g

Approx . 10mV/g













Temperature Drift of Sensitivity





< +0.06%/ °C















Temperature Drift of Zero





< 0.1mV/°C




Zero Offs et at Ub=5V


2.5 ±0.1 Volt  - generally: 0.5Ub ± 4%













Output Im pedanc e





100 Ohm





Digital puls e-width modulated output signal - linear to the degree of angle - available upon reques t.














CABLE WIRING T ABLE:













3-WIRE (standard)



SHIELDED CABLE (optional for Housing Ty pe 1)












RED

+5VDC Stable


RED



+5VDC Stable















WHITE

Output Si gnal


BLUE



Output Si gnal















BLUE

GND (housing)


SHIELD


GND (housing)














 

A TTENTION! Do not reverse voltage operating polarity!

 

Figure 1: Dimensions and Mounting Position ([mm])

 

 

 

 

 

 

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